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99
 

RIBBON FEED

drawing of ribbon

FOREWORD

A majority of Ribbon Feed and Reverse Troubles are caused by improper installation of Ribbon Spools or improper direction of the ribbon. Before attempting Ribbon Feed Adjustments, the following contributing causes should be checked:

a. Proper Spool not used. Use manufacturer's spool for each make of machine. An Underwood Spool will not work on a Royal, or vice versa, etc.

b. An Underwood Ribbon will not work on any other machine unless the eyelets on either end of the ribbon are first removed.

c. A Remington, Royal, Smith or Woodstock Ribbon will not work on an Underwood Typewriter unless a reverse eyelet is inserted at a point at least four inches from each end of the ribbon.

d. Ribbon must be fed properly through the Ribbon Guide and must be directioned properly off the Ribbon Spool (from the front-not the rear of spool). See drawing above.

e. Ribbon Spool Shafts must be free-not sluggish nor binding.

f. Ribbon Spool must be properly installed on Spool Shaft.

g. Typebar covers must clear ribbon spool.

 

100
 
REMINGTON
1. The Spring Drum of the Remington #17 provides the motive power to the ribbon feed mechanism when the carriage moves to the left while typing or spacing (not while tabulating or when carriage is moved by depressing Carriage Release Lever). The gear on the Spring Drum meshes into the Spring Drum Pinion turning the Spring Drum Pinion Shaft and the Ribbon Driving Gear Pinion which meshes with the Ribbon Drive Gear. The Ribbon Drive Gear Stud, fitting into the Drive Shaft Arm (see lower drawing) rotates the Ribbon Drive Shaft Rod. When carriage is moved to the right the Ribbon Throw-out Screw acts on the Pinion Release Bell Crank mechanism (see Tabulator) so that the Pinion Release Bell Crank Link will throw Spring Drum Pinion out of mesh with the Spring Drum gear. The Ribbon Drive Shaft Rod is fitted with a Ribbon Reverse Cam (left and right). The function of these cams is to move the Ribbon Drive Shaft Rod to the left or right when the cam is engaged by a Ribbon Reverse Plunger which moves down, ward into engaging position by the action of the Ribbon Reverse Tripping Lever at the time the ribbon completely unwinds from that spool.

The Ribbon Reverse Detent Plate mechanism controls and limits the movement (from side to side) of the Ribbon Drive Shaft Rod and should be adjusted to cause proper mesh of the Left and Right Ribbon Driving Gears.

2. ADJUSTMENTS. Before attempting Ribbon Feed Adjustment, check common causes of Ribbon Feed Trouble, Foreword sheet of this section.

a. Ribbon Feed:

(1) Determine if Spring Drum Pinion is meshing properly in Spring Drum Gear. If the Spring Drum Pinion Support adjusting screw is preventing proper meshing of gears, adjustment can be made with Spring Drum Pinion Support Adjusting Screw.

(2) Determine if Pinion Release Bell Crank Link is holding Spring Drum Pinion Support from proper contact with Support Adjusting Screw. Adjustment is made with Pinion Release Bellcrank Eccentric.

(3) Check Spring Drum Pinion binding screws for tightness and Spring Drum Pinion for proper engaging position. Adjust with Spring Drum Pinion binding screws.

(4) Check Ribbon Driving Gear Pinion Binding Screws for tightness. Check Driving Gear Pinion for proper position and Pinion Shaft Support for proper positioning of Ribbon Driving Gear Pinion in mesh with Ribbon Drive Gear. Adjustment can be made with Spring Drum Pinion Shaft Support screws.

(5) Check Ribbon Spool Shaft Pinion for proper mesh with Ribbon Driving Gear. Check Screws for tightness.

(6) Ribbon Spool Shafts, right and left, are not interchangeable. If incorrectly installed, ribbon feed trouble will result. Clearance of .008" should be maintained between top of Ribbon Spool Shaft Space Collar

 
and bottom of Spool Shaft Bracket, point indicated in drawing. To adjust, loosen both left and right hand ribbon spool shaft tension spring collar set screws. Loosen left and right hand ribbon spool shaft pinion set screws. With an .008" gauge set between the top of R. H. Ribbon Spool Shaft Space collar and bottom of R. H. Spool Shaft Bracket, push down on R. H. Ribbon Spool Shaft as you raise Ribbon Spool Shaft Pinion; tighten Pinion Set Screws. Repeat on L. H. Ribbon Spool Shaft. Tension adjustment for Ribbon Spool Shaft is provided by Ribbon Spool Shaft Tension Spring collar. Sufficient tension should be provided to support the weight of the full ribbon spool and winding disc without any noticeable sag. After adjusting, tighten Spool Shaft Tension Spring Collar set screws.

(7) Check the Ribbon Drive Gear Stud position in Drive Shaft Arm (see lower drawing). When replacing unit into typewriter frame, care should be taken that Ribbon Drive Gear Stud positions properly in the Drive Shaft Arm.

b. Ribbon Reverse:

(1) As the Ribbon unwinds completely from a spool the Ribbon Reverse Tripping Lever on that Spool Shaft rises and the Ribbon Reverse Plunger drops down in position to contact the Ribbon Reverse Cam on the Ribbon Drive Shaft Rod. The Cam form of the L. H. and R. H. Ribbon Reverse Cam must face each other on the Ribbon Drive Shaft Rod with high point up on one side, down on other. Rotation action of the Ribbon Drive Shaft Rod with the Plunger in position on the Cam causes the movement of the Rod to the opposite, direction and if the Ribbon Driving Gears have been set properly as outlined in Paragraph a (4) above, they will mesh properly. In this action the Detent toggle of the Ribbon Reverse Detent will reverse its position (if forward it will move back and if back it will move forward).

(2) Ribbon Reverse Detent should be positioned properly for holding Ribbon Drive Shaft Rod in proper position. To adjust, loosen Plate Set Screws and R. H. Ribbon Driving Gear Set Screw. Set Detent Toggle as shown in lower drawing with detent stud engaged in R. H. Ribbon driving gear slot. Move Ribbon Reverse Detent Plate until R. H. Ribbon Driving Gear meshes correctly with R. H. Ribbon Spool Shaft Pinion. Check Ribbon Spool Shaft Pinion to see that it meshes all around with the R. H. Ribbon Driving Gear with proper fitting and minimum amount of play. Tighten plate set screws, being careful that stud in slot of Roll is not binding. Tighten R. H. Ribbon Driving Gear Set Screw after sliding Ribbon Drive Shaft Rod to the extreme right. Set Detent toggle to the front as shown in upper drawing. Raise Ribbon Drive Shaft Shift Lever and set Left Ribbon Driving Gear in correct mesh with L. H. Ribbon Spool Shaft Pinion, then tighten L. H. Ribbon Spool Pinion Set Screw.

 

101
 

Reminton ribbon feed

 

102
 
ROYAL
The Ribbon Feed motivating power is transmitted by the Spring Drum Gear to the ribbon feed mechanism of the Royal Typewriter by means of a Worm Shaft whenever the carriage moves to the left, either in typing, tabulating, space bar depression or when moved by hand with the carriage release lever depressed. The Worm Shaft Pinion Assembly consists of a large and a small pinion, firmly affixed, having free bearing on the Worm Shaft connecting rod. The large pinion is enmeshed with the Spring Drum Gear while the small pinion seats the pinion case pawl. When the carriage moves to the left, the pinion pawl forces the pinion case and the Worm Shaft, to which it is affixed, to turn. When the carriage moves to the right, the small pinion releases the pinion case pawl, allowing the pinion assembly only to move freely. The Worm Gear, on the front end of the Worm Shaft, is enmeshed either with the Left Ribbon Spool Shaft Spur Gear as in the top drawing, left hand spool assembly, winding ribbon onto the left hand spool, or with the Idler Gear as in the lower drawing, left hand spool assembly, winding ribbon onto the right hand spool. In normal operating (non-reversing) position, both Automatic Reverse Arms are positioned against their stops on Ribbon Spool Bracket, and the Automatic Reverse Rolls (right and left) are both clear of the Reverse Cam.

As the ribbon unwinds from the right hand spool, as in the top illustration, the Automatic Ribbon Spool Trip, which is assembled into the Ribbon Spool, falls out of position in spool hub and the lower arm of the Trip engages the Automatic Reverse Arm pushing it back (towards rear of machine). The Automatic Reverse Shaft, which is attached to the right hand Automatic Reverse Arm Lever, pivots with the Lever in this operation, moving the left hand lever in same direction, which moves the top Automatic Reverse Roll (right) into engaging position with the Reverse Cam. As the Worm Shaft is constantly turning, the formed end of the cam comes into contact with the top Automatic Reverse Roll (right), which moves the Ribbon Reverse Arm, in which the Worm Shaft is positioned, down out of engagement with the Left Hand Ribbon Shaft Spur Gear into mesh with the Idler Gear, thereby reversing the gear action and causing the ribbon to feed on the Right Hand Spool, freeing the left hand spool.

As the ribbon unwinds from the left spool, as in the lower illustration, the Automatic Ribbon Spool Trip contacts the Automatic Reverse Arm (which governs the position of the lower Automatic Reverse Roll (left). As the Reverse Arm moves back toward the rear of machine the Automatic Reverse Roll (left) moves into position below the Reverse Cam. This contacts the Reverse Roll and raises the Worm Gear and the automatic reverse arm to which it is attached up to enmesh the Worm Gear with the Ribbon spool gear, causing the ribbon to feed on the left hand ribbon spool and freeing the right hand ribbon spool.

As one spool (right or left) is always engaged in gear mesh in one direction both spools may be freed from manual winding on either spool by holding the Ribbon Reverse Handle in neutral position by moving Ribbon Feed Release Handle to the left (toward Ribbon Reverse Handle). This action centralizes the position of the Worm Gear out of contact with both the Ribbon Spool Gear and the Idler Gear, permitting free manual movement of both ribbon spools.

  2. ADJUSTMENTS. Before attempting Ribbon Feed Adjustment, check common causes of Ribbon Feed Trouble, Foreword sheet of this section.

a. Ribbon Feed:

(1) All Gear Set Screws must be tight and all Gears must mesh properly, meshing adjustments being made by loosening Gear Set Screws and positioning Gears properly; then tighten set screws.

(2) Ribbon Spool Shaft Spur Gear (left) and Ribbon Spool Shaft Bevel Gear (right) should not bind on under side of Ribbon Spool Brackets. Adjust by loosening set screws and positioning properly.

(3) Ribbon Spool Shafts must be free in their bearings and Ribbon Spool Shaft Tension Springs should provide just enough tension to create a slight drag on the Shaft to prevent free movement of the ribbon. Tension adjustment is made by positioning Tension Spring Collars after loosening collar binding screws.

(4) Worm Shaft Pinion Assembly consists of two United Pinions; the outer (larger) pinion must mesh properly in Spring Barrel Gear while the smaller into which the Case Pinion Pawl locates must seat the Pinion Pawl properly (See Inset). Worm Shaft Spring, holding Pinion Pawl into proper engagement with the smaller pinion, must provide sufficient tension to insure proper seating of the Pawl.

(5) Type Bar Cover (cowl) must provide sufficient clearance with Ribbon Spools. Stops located inside front edge of cover may be formed down to provide this clearance if necessary.

(6) Ribbon Guide must be positioned properly on back of type bar guide to prevent binding. (See Ribbon Cover.)

b. Ribbon Reverse:

(1) Ribbon Reverse Handle, which is connected to the Ribbon Reverse Arm should be positioned so that when Ribbon Feed Release Handle is moved to the left, Reverse Arm will hold the Worm Shaft and Worm Gear in neutral position between the Ribbon Spool Gear and the Idler Gear. Adjustment is made by loosening Ribbon Reverse handle set screws and adjusting position of handle. Limit positionings of Worm Gear in Reverse Arm are controlled by Reverse Arm Extension Limits (see top inset) which may be adjusted by forming for engaging Worm Gear properly with Ribbon Spool Gear and Idler Gear. Worm Gear should engage Ribbon Spool Gear and Idler Gear without bottoming.

(2) Automatic Reverse Arms must operate free and Reverse Arm Springs must provide proper tension to return Automatic Reverse Arm to stop position after operation, and just sufficient to return Automatic Reverse Rolls to inactive position.

(3) Automatic Reverse Rolls (left and right) should be positioned to provide clearance of 1/64" with Reverse Cam when rolls are in an inactive position. Forming the blade of the Automatic Reverse Arm slightly provides positioning adjustment for Reverse Rolls. The inactive position of Reverse Rolls is governed by Reverse

(Continued to page 104)

 

103
 

Royal Ribbon Feed

 

104
 
UNDERWOOD
1. The Ribbon Feed on the Underwood Typewriter is motivated by the movement of the Universal Bar, through the Rocker Arms, Rocker Extension, Ribbon Feed Shaft Actuating Lever, the Ribbon Feed Pawl, Ribbon Ratchet Wheel, Driving Shaft Gear, Ribbon Spool Shaft Gear and the Ribbon Spool Shaft. As the Space Bar is connected to the Rocker Arm Extension, the ribbon feeds when space bar as well as type bars is depressed, but does not feed with the movement of the carriage while tabulating or carriage release levers are depressed.

The Ribbon Reverse Mechanism of the Underwood is controlled by the eyelet in either end of the ribbon acting on the Ribbon Engaging Lever, moving it around to contact and place the Ribbon Shifting Arm into engagement with the Shifting Arm Disc. Pressure of the Ribbon Shifting Arm against the Shifting Arm Disc forces the disc outward moving the driving Shaft to the right or left with it. This action causes the engagement of the Driving Shaft Gear with the Ribbon Spool Shaft Gear, causing feeding of ribbon on the empty spool.

2. ADJUSTMENTS. Before attempting Ribbon Feed Adjustment, check common causes of Ribbon Feed Trouble, Foreword sheet of this Section. Check also to determine that ribbon is positioned properly in slot of Ribbon Engaging Lever and that eyelets are located in both ends of the Ribbon.

a. Ribbon Feed:

(1) Ribbon Feed Shaft must be properly engaged in Rocker Arm Extension and there must be .010" to .020" end shake in the shaft. Adjustment is made after loosening Ribbon Feed Shaft Actuating Lever Collar Set Screw by positioning Ribbon Feed Shaft Actuating Lever. Tighten Set Screw when adjustment has been made.

(2) Ribbon Feed and Holding Pawl must be positioned properly on Ribbon Ratchet Wheel and there must be 3 1/2 teeth of the Ribbon Ratchet Wheel separating the two pawls as indicated in drawing. Adjustment may be made by loosening Ribbon Feed Pawl Binding Screw and properly positioning Ribbon Feed and Holding Pawls. Tighten Binding Screw when adjustment has been made.

(3) Ribbon Driving Shaft Gears, when set in either right or left position, must mesh properly with Ribbon Spool Shaft Gear. Adjustment may be made after loosening Driving Shaft Gear Set Screws by properly positioning Driving Shaft Gears. Tighten Set Screws after adjustment has been made.

 
(4) Ribbon Spool Shafts must be free on their bearings with .010" movement (up and down). Adjustment may be made after loosening Spool Shaft Collar Set Screws by positioning Spool Shaft Collar. Tighten Set Screw when adjustment has been made.

(5) Ribbon Spool Shaft Gears, located at the lower extremity of the Shafts, should be positioned flush with the lower end of the Shaft. Adjustment may be made after loosening Spool Shaft Gear Set Screws and positioning Gear properly. Tighten Set Screw when adjustment has been made.

(6) Ribbon Spool Guards (cups), which pivot on Ribbon Spool Bracket Casting for purpose of accessibility in replacing spool and threading ribbon through Ribbon Engaging Lever Slot, must be free on their bearings without unnecessary up and down play. Spool Guard Springs must be tensioned properly to return Ribbon Spool Guard (cups) to proper position. Set screws for positioning Ribbon Spool Guard Bushings in the Spool Guard are located directly below the Ribbon Spool Guard, front, in the Ribbon Spool Bracket Casting.

b. Ribbon Reverse:

(1) Ribbon Spool Shaft Springs should be adjusted, by forming, to provide sufficient tension to force Ribbon Shifting Arm Extension into teeth of the Ribbon Shifting Disc.

(2) Ribbon Shifting Arms should be adjusted to provide .005" to .010" up-down movement as indicated in drawing. Adjust after loosening Ribbon Shaft Bushing Set Screw by positioning Ribbon Shaft Bushing. Tighten set screw when adjustment has been made.

(3) Ribbon Shifting Arm Locks, which work in conjunction with the Ribbon Engaging Lever, must work free on their bearings and must seat fully in Ribbon Shifting Arm Slots. Adjustment may be made after loosening Ribbon Shifting Arm Set Screws by positioning Ribbon Shifting Arm Locks. Tighten set screws when adjustment has been made.

Clearance of 1/32" between Ribbon Shifting Arms and Shifting Arm Disc (except when reversing) should be maintained. Adjust by forming Ribbon Shifting Arms.

(4) Ribbon Detent Collars should clear Ribbon De-tent Lever by 1/64" as indicated in drawing. Adjustment may be made after loosening Ribbon Detent Collar Set Screws by properly positioning Ribbon Detent Collar. Tighten set screws when adjustment has been made.


ROYAL (Continued from page 102)
Arm Fixed Stops and by the Automatic Reverse Shaft Arm Set Screw on right end of Automatic Reverse Shaft.

If Automatic Reverse Roll (right) is not positioned properly (set too high) there is a possibility that extended portion of Reverse Cam may force Worm Gear against Ribbon Spool Gear during period of automatic ribbon reverse, and lock ribbon mechanism and disconnect carriage draw band. Adjustment is made by

  forming Reverse Roll down to provide more clearance.

(4) Reverse Arm Springs must have sufficient tension to perform their functions. Excess tension will affect operation of the Automatic Ribbon Reverse.

(5) Automatic Ribbon Spool Trip and Trip Spring must function properly. The Trip should drop out of Ribbon Spool hub when ribbon unwinds and spring should provide sufficient tension to insure this movement.

 

105
 
Underwood ribbon feed
 

106
 
WOODSTOCK
1. The Lower Universal Bar (Woodstocks above 485,000 serial) provides the motive power to the Ribbon Feed Mechanism. The Ribbon Feed Tube, which controls the movement of the Ribbon Feed Pawls, is connected to the Lower Universal Bar by one (1) Ribbon Feed Wire on older models, two (2) Ribbon Feed Wires on later models. The Ribbon Feed Pawl Assembly consists of two Pawls, one pivoting from the Top Plate acting as a Ratchet Wheel Holding Pawl, while the other, motivated by the Ribbon Feed Tube and held in position by the forming of the Holding Pawl is the Ribbon Feed Pawl. As the Lower Universal Bar is motivated exclusively by the Keylevers (not the space levers), there is no movement of the ribbon when the Space Bar, Tabulator Key or Carriage Release Lever is depressed.

The Automatic Ribbon Reverse is governed by the action of the Ribbon Reverse Trigger which is connected to the Ribbon Reverse Wire positioned through the Ribbon Spool Shaft. As the ribbon completely unwinds from one spool, the Ribbon Reverse Trigger drops out of its position against the spool hub, lowering the Ribbon Reverse Wire. The Ribbon Reverse Frame seated on the Ribbon Reverse Wire Collar, moves with the action of the Ribbon Reverse Trigger (up or down). As the Ribbon Reverse Frame drops down, it is contacted by the upturned end of the Ribbon Reverse Lever (which is constantly actuated by the action of the Ribbon Feed Tube) and moved toward the rear of the machine. The Reverse Arm of the Ribbon Reverse Frame is positioned on the Ribbon Feed Tube rod. As the Reverse Arm moves, it draws the Ribbon Feed Tube rod to the left or right, dislocating the Ribbon Feed Pawl Assembly from its position on the Ribbon Ratchet Wheel on the full spool side and engaging the Ribbon Feed Pawl Assembly on the Ratchet Wheel on the empty spool side, causing the automatic ribbon reverse.

2. ADJUSTMENTS. Before attempting Ribbon Feed adjustment, check common causes of Ribbon Feed Trouble, Foreword Sheet of this Section.

a. Ribbon Feed:

(1) The Ribbon Reverse Trigger must be positioned properly in the square opening in the ribbon spool, between the ribbon and the metal hub of the spool. It cannot operate if it is between the folds of the ribbon. With the spool removed, the Ribbon Reverse Trigger should stand upright, being held in that position by the action of the Ribbon Spool Catch Spring, so as to enter square opening in ribbon spool when reinstalled. To adjust, tighten Ribbon Spool Binding Screw and if necessary, form spring to provide proper tension.

(2) The Ribbon Feed Pawl Collar must be positioned properly on the Ribbon Feed Tube. Ribbon Feed Pawl Collar Set Screws have definitely positioned holes in the Ribbon Feed Tube.

(3) The Ribbon Feed Pawl Assembly must function correctly. The Holding Pawl must perform properly in holding the Ratchet Wheel, while the Feeding Pawl must move with the action of the Ribbon Feed Tube. Ribbon Feed Pawl Spring must be attached to the arm of the Holding Pawl. The Ribbon Feed Spring must be attached to the arm of the Holding Pawl. The Ribbon Feed and Holding Pawls cannot be formed. If defective, they should be replaced. The Ribbon Feed Pawl Assembly should be so adjusted that when the Right Hand Ribbon Feed Pawl Assembly engages the Right Hand Ribbon Feed Ratchet Wheel, the Left Hand Ribbon Feed Pawl Assembly will be disengaged from the Left Hand Ribbon Feed Ratchet and vice

 
versa. This is governed by the Reverse Arm of the Ribbon Reverse Frame. Ribbon Feed Tube Rod Collar should be positioned properly to perform this adjustment.

(4) The Ribbon Feed Ratchet Wheel must not bind on Ribbon Spool Cup Stem Nut. Adjustment is made by loosening Ribbon Feed Ratchet Lock Nut and backing Ribbon Feed Ratchet Wheel to eliminate bind, then, holding Ribbon Feed Ratchet Wheel, tightening Ribbon Feed Ratchet Lock Nut.

(5) Ribbon Feed Wire. The Ribbon Feed is actuated by the operation of the Lower Universal Bar to which the Ribbon Feed Tube is connected by the Left Ribbon Feed Wire between Keylevers Nos. 6 and 7 and the Right Ribbon Feed Wire between Keylevers Nos. 36 and 37. Stop nuts attaching these ribbon feed wires to the Lower Universal Bar are adjusted to provide about 1/32" between adjusting nuts and lower Universal Bar. If wire is set too tight it will cause springing of the Lower Universal Bar. The Ribbon Feed Wire is not to be adjusted for Ribbon Cover.

b. Ribbon Reverse:

(1) The Ribbon Reverse Trigger, as mentioned under Paragraph 2a, must be positioned properly in the square opening in the ribbonspool between the Ribbon and the hub of the spool. Attached to the Ribbon Reverse Trigger, feeding down through the Ribbon Spool Shaft, the Ribbon Reverse Wire accommodates at its lower extremity the Ribbon Reverse Wire Collar, in which the Ribbon Reverse Frame is positioned. As the Ribbon Reverse Trigger moves out, when the ribbon completely unwinds from that spool, the Ribbon Reverse Frame moves down, in position to be engaged by the Reverse Lever.

(2) The Ribbon Spool Catch Spring is a double action spring. When the spool is in place on the Ribbon Spool Shaft, forming of the spool depresses the Ribbon Spool Catch Spring, permitting free untensioned movement of the Ribbon Reverse Trigger. When the spool is removed from the Shaft, the spring tension forces the Reverse Trigger into an upright position. The Spool Catch Spring should be formed properly and the binding screw holding Ribbon Spool Catch Spring to Ribbon Spool Shaft should be tight. Spring may be formed to move Reverse Trigger into upright position.

(3) Ribbon Reverse Frames. When the ribbon spool on either side is empty, the end of the Reverse Frame on that side must rest on the Ribbon Reverse Lever inside the curved extension. Adjustment is made by properly positioning Ribbon Reverse Link Collar on the Ribbon Feed Tube. Tighten Collar Set Screw when adjustment has been made. When both ribbon spools have been removed from the Ribbon Spool Shafts, the Ribbon Reverse Frames must be held up about M6" above the Ribbon Reverse Levers. Proper tension on the Ribbon Spool Catch Spring holds the Reverse Trigger in Upright position. Since the Ribbon Reverse Frame is positioned in the Ribbon Reverse Wire Collar attached to the Reverse Trigger, the Frame will position properly if the Spool Catch Spring is tensioned properly, unless the Ribbon Reverse Frame has been bent, in which case it must be straightened.

c. To Remove and Replace:

(1) Ribbon Feed Pawl may be removed for replacement by backing out Ribbon Feed Pawl Collar set screw, which is accessible by facing machine from rear with rear cover plate removed and raising machine up from the rear. Remove Feed Pawl Pivot Screw and

(Continued to page 108)

 

107
 
Woodstock ribbon feed
 

108
 
L. C. SMITH
1. As noted in the drawing, the Main Spring Drum provides the motive power for the Ribbon Feed Mechanism when the Carriage is moving to the left through the action of the Feed Pawl on the Drive Ratchet. When the Carriage moves to the right, the Feed Pawl moves with the Drum, disengaging itself from the Ratchet, while the ribbon mechanism is held stationary through the action of the Check Pawl on the Detent Ratchet. Friction between the Detent Ratchet and Drive Ratchet is caused by the pressure of the Drive Friction Spring applied by the Ribbon Drive Friction Adjusting Nuts. The Drive Ratchet and the Detent serve dual purposes, the Detent Ratchet affording braking power to the Main Spring Drum when tabulating through the action of the heel of the Check Pawl, holding the Detent Ratchet while the brake band between the Ratchets slows down the movement of the Drive Ratchet. The Reducing Gear in mesh with the Main Shaft Gear provides motivation of the Main Shaft only when the carriage is moving to the left. The mechanism up to the Spool Shaft Gear is always rotated in the same direction. The position of the Reverse Shaft Gears is governed by the action of a Reverse Pawl on an empty spool, through the Ribbon Reverse Bel!crank connection. As the ribbon unwinds from a spool, the top of the Reverse Pawl (in the spool) moves out away from the Spool Shaft into an opening in the spool, which permits the lower extension of the Pawl to engage the teeth of the Reverse Shaft Gear, while the movement of the gear lifts the Reverse Shaft and Gear upward to contact the Spool Shaft Gear on that side. Simultaneously, the Ribbon Reverse Bellcrank connection disengages the Reverse Shaft Gear from the Spool Shaft Gear on the other side.

2. ADJUSTMENTS. Before attempting Ribbon Feed Adjustments, check common causes of Ribbon Feed Trouble, Foreword sheet of this section. Also check Type Bar Cover and Cover springs to determine that they are not binding on Ribbon mechanism.

a. Ribbon Feed. All moving parts must be free and all gears must mesh properly before attempting ribbon feed adjustments.

(1) Drive Friction Spring must have enough tension to turn ribbon spools when a slight pressure is applied to top of ribbon spool. Adjustment may be made by unlocking (turn counter-clockwise) the outside Ribbon Drive Friction Adjusting Nuts and turning in
 
(clock-wise) inside Ribbon Drive Friction Adjusting Nut. Care must be taken not to set tension too strong, as the Drive Friction Spring also provides braking power to the Drum when tabulating. Too much tension will slow Carriage down too much.

(2) Feed Pawl and Check Pawl must have clean cut edges in order to engage the teeth in the Detent and Drive Ratchet properly. The Check Pawl engages the teeth in the Detent Ratchet, while the Ribbon Feed Pawl engages the 'teeth in the Drive Ratchet. The Feed Pawl and the Check Pawl must engage the teeth of their respective Ratchets centrally. Feed Pawl and Check Pawl Springs must have sufficient tension to position Feed Pawl and Check Pawl into the Ratchet Teeth.

(3) Reducing Gear must mesh properly in Drum Driving Pinion. If necessary, Reducing Gear Bracket may be formed to provide proper mesh.

(4) Reverse Shaft Gear must mesh securely with Ribbon Shaft Gear. Proper mesh of these gears may be accomplished by forming Reverse Shaft Limits. All Gear teeth must be straight. Bent Gear Teeth will cause ribbon feed trouble. Check gear teeth before attempting other adjustments.

(5) Ribbon Spool Shafts should be free and Spool Shaft Spring should provide sufficient tension to support a full ribbon spool. Adjustment may be made by loosening Spool Shaft Gear set screw and properly positioning Spool Shaft Gear.

b. Ribbon Reverse:

Reverse Pawl should move out of shaft position to enter spool opening when ribbon unwinds and lower extension of Reverse Pawl should engage Reverse Shaft Gear fully causing it to move up into engagement position with Ribbon Spool Shaft Gear. Model #8 machines have an eccentric washer under Ribbon Spool to limit Reverse Pawl engagement in Reverse Shaft Gear, while Super-Speed Models are limited by Ribbon Spool Bracket Frame Stop, which may be formed to limit Reverse Pawl top properly while lower extension engages Reverse Shaft Gear properly. Caution: Reverse Pawl should not be permitted to limit too far from shaft, otherwise, top of Reverse Pawl will bind in opening in ribbon spool, after the reverse has been accomplished.


WOODSTOCK (Continued from page 106)
nut. Disengage Ribbon Feed Pawl Spring. The Feed Pawl (not the holding pawl) may now be moved out of its position in the Holding Pawl, and replaced, if necessary. To remove the Holding Pawl, at this point, back out Ratchet Wheel Holding Pawl Pivot Screw and remove Holding Pawl. To replace, reverse above procedure.

(2) Ribbon Spool Shaft. Disengage Ratchet Wheel Feed Pawl from Ratchet Wheel on side to be disassembled, by manually reversing position of the feed pawls (push feed pawls in on opposite side to engage ratchet wheel). Back out Feed Ratchet Lock Nut (holding the Ratchet Wheel by inserting a screwdriver through its spokes). Back out Ribbon Feed Ratchet Wheel until it falls loose atop the ratchet lock nut on the Ribbon Reverse Wire Collar. Lifting the spool shaft up, back out the Ribbon Reverse Wire Collar after removing Reverse Wire nut. Lift the Spool Shaft out and the Ratchet wheel, Ribbon Reverse Wire Collar and the Ratchet wheel lock nut will come loose. To Remove Spool Cup: at this point, back out ribbon spool

  cup stem nut. Lift the cup up and out of locating pin on top plate.

To Replace Ribbon Spool Shaft, insert the Ribbon Spool Shaft in its bearing in the top plate. Replace Ribbon Spool Cup stem nut, tighten when ribbon spool is positioned on its locating pin. Replace the ribbon Feed Ratchet wheel, setting it loosely on the wire-do not screw it up: Replace the Feed Ratchet Lock Nut loosely on wire. Replace the Ribbon Reverse Wire Collar, lifting the Shaft high enough to permit its being replaced while the Ribbon Reverse Frame Lever is engaged in place. Wind up the wire collar to its permanent position, Place the Ribbon Feed Ratchet Wheel on its threaded shaft and wind clockwise until it stops, then back off about one-half turn. Hold the Ribbon Feed Ratchet Wheel in this position, run up the Ribbon Feed Ratchet lock nut until it contacts the ribbon feed ratchet wheel and tighten lock nut. Test Ratchet wheel for free movement. Replace Ribbon Reverse wire nut, running it up to the Ribbon Reverse Wire Collar then tighten

 

109
 
LC Smith Ribbon Feed
 

110
 

RIBBON COVER

REMINGTON

1. Depression of a keylever contacting Key Lever Finger of the Ribbon Universal Bar causes the rear arm of the Ribbon Universal Bar to move upward and through the Ribbon Lift Push Link and its stud to move the Ribbon Actuator Arm and Ribbon Guide into position with the ribbon to cover the type face at time of printing. The Ribbon Control Lever, through the Control Shaft and Control Arm positions the Ribbon Lift Push Link Stud in the Ribbon Actuator Arm for the proper throw of the ribbon guide. The Ribbon Lift Push Link Stud positions are as follows: (1) Ribbon Control Lever set in top (blue) position will cause the Push Link Stud to position in front end of Ribbon Actuator Arm Slot (as shown in drawing) causing ribbon guide to position top half of ribbon in printing position. (2) Ribbon Control Lever Set in lower (red) position will cause the Push Link Stud to position in rear end of Ribbon Actuator Arm Slot causing Ribbon Guide to position lower half of ribbon in printing position. (3) Ribbon Control Lever set in stencil (white) position will cause the Push Link Stud to position in center of Ribbon Actuator Arm directly below top slot opening causing no lifting of the Ribbon Guide.

With the keylevers all in normal non-operating position, the Ribbon Actuator Arm will limit on Ribbon Actuator Arm Stop Pin located directly beneath the Top Ribbon Actuator Arm Stop shown in drawing. The Top Ribbon Actuator Arm Stop shown in drawing prevents ribbon from overthrowing (bleeding) or cutting off bottoms of letters when bottom half of ribbon is used.

2. ADJUSTMENTS. Before attempting adjustments determine that Ribbon Universal Bar is free on its pivots with a minimum of end shake and that Ribbon Universal Bar which may be adjusted by forming Keylever Clamp at point indicated in drawing is level and true in its entire length.

a. Ribbon Position: With Keylevers and Ribbon Universal Bar in inactive position, position of the ribbon is controlled by Ribbon Actuator Arm Stop Pin (located directly under the top Ribbon Actuator Arm Stop shown in drawing) upon which the Ribbon Actuator Arm rests. Stop pin should be formed to hold ribbon about 3/32" above flat top of type guide and in such position that Ribbon Lift Push Link Stud does not ride top edge of Ribbon Actuator Arm Slot.

b. Ribbon Throw:

(1) Ribbon Lift Toggle Bell Crank Eccentric controls the movement of the Ribbon Lift Push Link when Ribbon Lift Push Link Stud is properly positioned in Ribbon Actuator Arm Slot. Adjustment is made after loosening Ribbon Lift Toggle nut and

 
screw by positioning Ribbon Lift Toggle Bell Crank Eccentric.

(2) Ribbon Lift Push Link Stud, with Ribbon Control lever set in stencil (white) position, should be centered directly below top slot opening in Ribbon Actuator Arm and its up and down movement should clear both sides of the slot. Adjustment may be made after loosening Ribbon Control Shaft Arm Set Screws by moving Ribbon Control Shaft around to position stud properly. Tighten Ribbon Control Shaft Arm Set Screws when adjustment has been made.

With the Ribbon Shift Lever set in top (blue) position, and Shift Lock depressed, capital letters should type in center of the top half of the ribbon. Adjustment is made with Ribbon Lift Toggle Bell Crank Eccentric after loosening Ribbon Lift Toggle Screw. To lower ribbon, turn Ribbon Lift Toggle Bell Crank Eccentric toward the front of machine. To raise ribbon, turn Ribbon Lift Toggle Bell Crank Eccentric toward the rear of machine. Lock Eccentric with Eccentric Screw after adjusting.

Lower Extension "E" of Ribbon Control Lever Stud should be formed so that Ribbon Control Lever Stud seats securely in Ribbon Control Lever Detent Spring.

With the Ribbon Control Lever set in red position, type should strike centrally in lower half of ribbon. Upper Extension "E" should be formed to position Ribbon Control Lever Stud properly and securely in Ribbon Control Lever Detent Spring. The Ribbon Actuator Arm Stop should be formed, if necessary, so that while holding a keylever depressed, the Ribbon Actuator Arm just clears underside of the stop. Check Ribbon Guide for sticking-if it fails to return, to normal position, Ribbon Actuator Arm Stop is formed too low.

(3) Ribbon Guide. The Ribbon Guide should not move when Ribbon Control Lever is moved from Red to Black or Black to Red position. Such movement may be caused by: improper forming of one or more key lever fingers; improper adjustment of Ribbon Lift Toggle Bell Crank Eccentric to permit Ribbon Universal Bar to contact inactive keylevers; or, Ribbon Lift Push Link Spring Clip binding on Toggle Bell Crank.

(4) Ribbon Universal Bar Fingers are formed to provide additional adjustment in the event ribbon does not raise high enough or too high on some characters. Forming Fingers up will raise Ribbon Guide; forming down will lower Ribbon Guide.

(5) Springs. It is essential that all springs be of proper tension and positioned properly.

 

111
 
Remington ribbon cover
 

112
 
ROYAL

1. Ribbon Cover (Bichrome) Mechanism governs the positioning and throw of the Ribbon Guide and the Ribbon when the Bichrome Handle is set in Red, Black or Stencil Position, while the Segment is in normal or shift position. The Phrase "Ribbon Cover" is defined as "proper covering of the type face with ribbon." If the Ribbon is cutting off the tops of letters, or bleeding colors, when a two-color ribbon is used, the trouble is identified as Ribbon Cover or Bichrome trouble.

Positioning of the Bichrome Handle rotates and positions the Ribbon Vibrator Cam which determines the throw of the Ribbon Vibrator. The Index Detent holds the Index in the proper control position for the Ribbon Vibrator Cam. The Ribbon Vibrator Cam controls the movement of the Ribbon Vibrator.

2. ADJUSTMENTS:

a. Ribbon Position. Before attempting any adjustment, test the Ribbon Position. With segment in normal non-capital position, the top of ribbon should be positioned about 1/16" above the fiat top of the type guide or 1/16" below top of line finder scale, which adjustment is made by positioning Vibrator Arm Rest after loosening Vibrator Arm Rest Screw. Ribbon Vibrator should be checked for free action (not binding on rear of type guide). Tops of 1/2 and / should print clearly. Ribbon Position Adjustment is controlled by the Vibrator Arm which should be contacting Cam when type is held against platen. Adjustment for more or less ribbon is made at Forming Point indicated on drawing. To raise ribbon, form end of Vibrator Arm upward. To lower ribbon, form end of Vibrator Arm downward.

b. Ribbon Throw. Before adjusting Ribbon Throw-check Ribbon Vibrator for binding. After setting Ribbon Position properly, if letters are cutting-off at top, loosen Ribbon Throw Adjustment Screw Lock Nut and turn Ribbon Throw Adjusting Screw, to the left or right, as may be necessary, testing until throw is correct and all play is-removed from Ribbon Vibrator parts. Tighten lock nut when adjustment has been made. In correct position the Vibrator Arm must contact cam fully when type is held against the platen.

c. Ribbon Vibrator Arm Spring must be connected properly and provide sufficient tension to return Ribbon Vibrator Arm to rest position and vibrator to normal position. Before endeavoring to increase tension, check Ribbon Vibrator for binding on type guide, or for sluggish action due to dirt, erasures, etc.

d. Ribbon Vibrator, which is connected to Ribbon Vibrator Arm with Cotter should be free on the cotter and the cotter should fit snugly in cotter hole in Vibrator Arm. If cotter hole is elongated through wear, Vibrator Arm should be replaced, otherwise it will be impossible to prevent bleeding. Vibrator should be formed to fit properly, if necessary, and should not bind on Type Guide.

 

113
 
Royal ribbon cover
 

114
 
UNDERWOOD
1. Ribbon Cover, as it is defined in the typewriter industry, is the mechanism providing proper ribbon cover of the type when carriage is in shift or normal position with Ribbon Shift Lever set on red or black and the complete disengagement of the ribbon lifting mechanism (no ribbon) when the Shift Lever is set in Stencil Position. These adjustments prevent tops of letters from cutting off or bleeding of colors when a two color ribbon is used.

2. ADJUSTMENTS:

a. Ribbon Position. Before attempting any Ribbon Cover Adjustments, test the Ribbon Position with carriage in normal non-shifting position. The Ribbon should be approximately 1/10" above the type guide. Setting Ribbon Shift Lever in Stencil position, type with the underline _______ key. If positioned properly the underline will not. print. Shift carriage to capital position and with Ribbon Shift Lever set on Red, type with the underline ______ key. Underline should print clearly. Set Shift Lever on black and type with I and with underline ______ ; there should be no bleeding of colors. Ribbon adjustment is made by forming Lower Ribbon Guide Actuating Lever Stop, up or down to secure proper position.

b. Ribbon Throw. After setting Ribbon Position properly, if letters are cutting-off or bleeding, adjustment may be made to provide proper ribbon after loosening Shift Slide Bracket Screws (upper drawing). Moving the Ribbon Shift Slide back (towards rear of machine) gives more ribbon and prevents cutting off. Moving the Ribbon Shift Slide forward (toward front of machine) gives less ribbon and prevents bleeding. Tighten Bracket Screws. If this adjustment does not provide sufficient ribbon, form Actuating Lever or Ribbon Shift Slide. When ribbon throws too high in lower case, adjust Ribbon Guide Actuating Lever Bracket Lower Stop (located between the Actuating Lever Studs-Lower Drawing). With carriage in non-shift position, Ribbon Shift Lever set in Red position and with key-lever depressed, there should be a slight clearance between the Stop and the Actuating Lever. Adjust by forming Ribbon Guide Actuating Lever Bracket Stop lower.

c. Ribbon Guide must be free on its pivot and travel vertically with a minimum of side play, hugging the back of the Type Guide in both upper and lower case. The Ribbon Guide is provided with Side Guide Lugs which may be adjusted to eliminate side play. (Set Ribbon Shift Lever in Stencil (white) position while adjusting guide.)

d. Ribbon Shift Lever Detent Pin Spring, attached to Detent Pin, should provide sufficient tension to hold pin in the notches of type bar rest when set in red or black position. Adjustment is made by loosening Type Bar Nest Binding Screw and moving Type Bar Nest to proper position. Detent Pin Spring may be formed if nest adjustment does not correct trouble.

e. Ribbon Guide Actuating Lever should be positioned centrally between the arms of the Ribbon Shift Slide when Ribbon Shift Lever Detent Pin is set in Stencil Position. Ribbon Shift Lever should be formed along point indicated in drawing to provide this position. Ribbon Guide Actuating Lever must be centrally located both in the opening in the Universal Bar Frame and in the large hole in the segment. Adjustment is made by loosening Ribbon Guide Actuating Lever Bracket Screws and positioning Ribbon Guide centrally in U-Bar frame opening. Ribbon Guide Actuating Lever may be formed to locate centrally in large segment hole. Ribbon Guide Actuating Lever must travel behind segment with a minimum of clearance. Actuating Lever may be formed to provide limited clearance with back of segment.

f. Ribbon Shift Slide. The Actuating Lever Studs (lower drawing) must enter slots in Ribbon Shift Slide properly without movement of the Ribbon Guide when the Ribbon Shift Lever is moved from Red to Black position or vice versa, regardless of position of the carriage. Adjustment may be made by loosening Shift Ribbon Guide Actuating Stop. Ribbon Shift Slide may be formed, if necessary.

 

115
 
Underwood ribbon cover
 

116
 
WOODSTOCK
1. The Ribbon Cover (Bichrome) Mechanism governs the positioning and throw of the Ribbon Guide and the Ribbon when the Ribbon Shift Lever is set in Red, Black or Stencil Position, while the carriage is in normal or shifting position. Its purpose is to provide exactly enough ribbon in each instance to prevent the tops or bottoms of letters from cutting off or to prevent bleeding of colors when a two color ribbon is used.

On Woodstocks above 580,000 serial the teeth of the Lower Universal Bar must not be formed for ribbon throw, as is the case on machines below this serial. Lower Universal Bar teeth on machines above 580,000 serial are formed for Individual Escapement Trip Adjustment only.

2. ADJUSTMENTS:

a. Ribbon Position. Before making any Ribbon Cover adjustments, test the Ribbon Position by setting the Ribbon Control Lever in stencil (white) Position. Shift carriage to Capital Letters and type with the Underline ____ Key. If the Underline prints, the ribbon is positioned too high and must be lowered. To lower ribbon to its correct position, bend the Position Adjustment Prongs together slightly. To Raise Ribbon to its correct position, spread Position

  Adjustment Prongs apart slightly. (Be careful, do not break prongs.)

b. Ribbon Throw. After setting Ribbon Position properly, if letters are cutting off at top, loosen Shift Lever Bracket Screw and holding Ribbon Vibrator Yoke Assembly in place, move Ribbon Shift Lever Bracket in towards the yoke. Shortening the parts will provide MORE RIBBON. Lengthening (spreading Ribbon Shift Lever Bracket away from Ribbon Vibrator Yoke Assembly) will provide LESS RIBBON, to prevent bleeding. Tighten Shift Lever Bracket Screw when adjustment has been made.

c. Ribbon Guide Stop. The Ribbon Guide Stop Link, which governs the extreme upward throw of the ribbon guide, is located on the Line Finder Frame. Move carriage to extreme left, then loosen the Line Finder Link Screws (2); holding a typebar against the platen, push the Line Finder Arm down until it contacts the pin in Ribbon Guide Stop Bellcrank; tighten screws. This adjustment prevents ribbon from overthrowing. After this adjustment has been made, check position of Line Finder in its relation to line of writing, adjusting, if necessary, by loosening the two Line Finder top screws and positioning line finder; tighten screws.

 
L. C. SMITH
1. The Ribbon Cover Mechanism of the L. C. Smith, being motivated by rocking action of the Escapement Rocker requires proper adjusting of the Escapement Trip and U-Bar Pick-up before the ribbon cover may properly be adjusted (see Escapement). Whenever the Escapement Trip or Pick-up is adjusted, it is essential that the ribbon cover he adjusted also. As the ribbon throw is controlled by the Escapement Rocker, the ribbon will raise to cover type whenever a keylever or the space lever is depressed.

2. ADJUSTMENTS. Before attempting adjustments, check the Ribbon Carrier for free movement in all positions of the Ribbon Bichrome Lever.

a. Position. With shift key depressed and type bar raised to the platen, ribbon should raise sufficiently to reach the top of the type head. Adjustment may be made with the pull arm adjusting screws, as follows:

(1) To raise ribbon. Loosen both pull arm adjusting screw lock nuts. Back out lower screw slightly and go in on upper screw an equal amount or until the top screw just contacts the top part of pull arm.

(2) To lower ribbon. Loosen both pull arm adjusting screw lock nuts. Back out upper screw slightly and go in on lower screw an equal amount or until the lower screw contacts the lower part of the pull arm.

CAUTION. Adjustment of pull arm adjusting screws requires extreme care. If either screw is turned in too deep the ribbon pull arm will be deformed and cannot

 

be adjusted. In such instances a new pull arm will be required.

b. Ribbon Throw. Movement of the Ribbon Bichrome Lever positions the Fulcrum Pin Bracket for proper positioning of the pins in the Ribbon Vibrator to control the ribbon throw. Both fulcrum pins must enter Vibrator holes smoothly without binding. When Ribbon Bichrome Lever is moved into Stencil (white) position, Ribbon Carrier should drop down about 1/32" which insures that the ribbon carrier is free. If it does not drop down freely check Ribbon Carrier Slide fitting in Type Guide for bind.

c. Ribbon Carrier must operate freely without bind in any Ribbon Bichrome Lever Position.

d. Vibrator Arm Limit may be formed, if necessary to prevent ribbon from over-throwing when Bichrome Lever is set in Red Position.

e. Bleeding. With Ribbon Bichrome Lever set in Black position (when two color ribbon is used) if bleeding occurs on bottom of letters, underscore or diagonal, adjustment may be made by forming Fulcrum Pin Bracket Stop (shown in drawing limiting Ribbon Vibrator) down slightly so ribbon vibrator arm will limit sooner to prevent bleeding.

f. Spring Tension. As the ribbon cover mechanism is controlled by the Escapement Rocker spring, tension on the Escapement Rocker should be sufficient to return Ribbon Carrier to inactive position. A bind in ribbon carrier or Ribbon cover mechanism will be reflected in the escapement action of the Escapement Rocker.

 

117
 

Woodstock and LC Smith ribbon covers

 

118
 

KEYSET MECHANISM

REMINGTON

1. Proper function of the Keyset and Clear Mechanism of the Remington #17 depends upon the location of the Stops in the Tabulator Bar in their relation to Lip "A" of the Tabulator Set Mechanism and the Lip of the Tabulator Clear Blade. The Lip of the Tabulator Clear Blade should be directly under Lip "A" of the Tabulator Set Arm. Movement or adjustment of the Tabulator Bar (see Tabulator) may affect the operation of both the Tabulator Set and Clear Mechanisms.

2. ADJUSTMENTS:

a. Tabulator Set Mechanism:

(1) Set Blade Adjusting Screw should be adjusted so that when the Tabulator Set Bar is in normal position limited by Tabulator Key Up-Stop (see Tabulator), set Blade Adjusting Screw just clears the bottom of the Tabulator Set Blade.

(2) Lip "A" of Tabulator Stop Set Arm Bracket must be set to contact top of one Tabulator Stop centrally. Adjustment may be made after loosening Tabulator Set Arm Bracket Screws by moving Tabulator Set Arm Bracket to the right or left as may be necessary. When Tabulator Set Key is depressed, Lip "A" of the Tabulator Stop Set Arm Bracket should have fully set the Tabulator Stop by time Tabulator Set Blade limits at Point "X" on comb. If Tabulator Stop is not being fully set, adjustment may be made by forming Lip "A." Lip "A" should clear tops of all Tabulator Stops when in normal nonoperating position.

b. Tabulator Clear Mechanism:

(1) Clear Blade Adjusting Screw should be adjusted so that when the Tabulator Clear Bar is in normal position limited by Tabulator Key Up-Stop (see Tabulator) Clear Blade Adjusting Screw just clears bottom of Tabulator Clear Blade.

(2) Tabulator Clear Blade Lip should clear bottom of set Tabulator Stops by 1/32" when in normal non-operating position. When Tabulator Clear Key is depressed, Lip of Tabulator Clear Blade should restore the indicated Tabulator Stop to normal position if Tabulator Clear Blade limits on Comb (Point X on left side of Comb). Adjustment may be made by forming Lip of Tabulator Clear Blade. Adjust for position by forming Tabulator Clear Blade top.

 

119
 
Remington keyset mechanism
 

120
 

ROYAL

1. The Tabulator Stop Set Key, located on the right side of the front panel of the Royal Typewriter, when depressed, moves the Stop Set Arm into position to engage and set a Tabulator Stop in the Tabulator Rack.

The Tabulator Clear Key, when depressed, positions the Stop Release Roll to contact and return to inactive position a set tabulator stop.

2. ADJUSTMENTS:

a. Key Set Mechanism:

(1) Stop Set Arm should be positioned directly in front of the Tabulator Stop. Adjustment may be made by forming Stop Set Arm to the right or left and after forming should be checked to determine that it is not inclined, causing depression of more than one stop, or causing it to become wedged between Tabulator Stops. Whenever position Of the Tabulator Rack is changed (see Tabulator), stops should be checked to determine that they are positioned properly in relation to Tabulator Stops in the Rack.

Clearance between Stop Set Arm in normal inactive position and the Tabulator Stop should be 3/16" as indicated in drawing. The inactive position of Stop Set Arm is governed by Set Arm Extension which rests against rear back frame of the machine and may be adjusted to position Stop Set Arm.

(2) Stop Set Arm Throw may be adjusted by forming the lower part of the Set Key Stem Crank. Bending the lower part of the Set Key Stem Crank toward the rear of machine will increase the throw; bending toward the front of machine will decrease the throw. Forming of this part should be reduced to an absolute minimum.

b. Clear Mechanism:

(1) Stop Release Roll should be so adjusted that when Clear Key is depressed Stop Release Roll, will contact set tabulator stop returning it to normal positive unset position. Tabulator Clear Key Link may be shortened to provide quicker contact with set Tabulator Stop by forming. Stop Release Roll should be so adjusted that when Clear Key is fully depressed, Stop Release Roll will rest lightly against unset tabulator stop.

(2) Position of Stop Release Roll Bracket is governed by a stop on the Bracket to limit inactive position of Release Roll.

 

121
 
Royal keyset mechanism
 

122
 
UNDERWOOD

1. The KST Set Keylever, located on the right of the Underwood Tabulator Bar, when depressed, moves the Key Set Stop Lever to contact and depress one Tabulator Stop.

The KST Clear Keylever, located to the left of the Tabulator Bar, when depressed, moves the Clearing Plunger into position to clear and return to normal inactive position a set tabulator stop. These members should be aligned one above the other to function properly.

2. ADJUSTMENTS:

a. Key Set Mechanism:

(1) Keyset Stop Lever should be positioned directly above the Tabulator Stop and there should be .040" to .042" clearance between the Keyset Stop Lever and the top of the unset Tabulator stops as indicated in left top drawing. Adjustment may be made by farming top of Key Set Stop Lever. Key Set Stop Lever should be free on its pivot and KST Stop Spring (top) should be properly attached and of sufficient tension to hold Stop Lever to the right. The Keyset Stop Lever should set the Tabulator Stops to full engaged position in the Tabulator Rack. Adjustment may be made by forming top of Key Set Stop Lever.

(2) KST Stop Lever Spring should be properly attached and should function properly to return Stop Lever to normal position after operation.

b. Clearing Mechanism:

(1) Clearing Plunger should be positioned directly under individual Tabulator Stops and should restore set stops to inactive position when KST Keylever Clear Lever is depressed. Top of Clearing Plunger should clear unset stops by .002" to .003". Adjustment may be made by forming KST Keylever Clear Lever; Clearing Plunger must move freely in Tabulator Housing.

(2) Clearing Plunger Spring should be properly attached and function properly to return Clearing Plunger to normal position after operation.

 

123
 
Underwood keyset mechanism
 

124
 

WOODSTOCK

1. Two types of keyset Levers have been used on more recent model Woodstock Typewriters, as pictured in the drawing. One operates as a key on the keyboard, the other as a Push Key on the Front Panel of the machine. In either event both connect to the Set Lever Collar Bracket at point indicated by Set Key Link Adjusting Screws.

During World War II, Woodstock Typewriters have been constructed with alternately spaced stops instead of a stop for each spacing, in order to provide additional strength between the stops and to eliminate service troubles on machines used by the Armed Forces. On these machines, the Tabulator Stop Set Lever has a wide setting blade formed to contact the nearest Stop, regardless of position of the carriage.

The Tabulator Stop Clear Lever clears all set Tabulator Stops simultaneously. No provision is made for clearing an individual stop mechanically, however, the operator may clear any individual stop by lifting it up and back into normal non-set position by the hand.

2. ADJUSTMENTS:

a. Key Set Mechanism:

(1) Tabulator Stops do not derive their tension from springs, but are so formed that the rear arm of the stop will spring and when thrown back into normal position, the stop's rear extension will fall back into a groove in the Tabulator Stop Shaft and remain there until again set.

To Remove Tabulator Stop, loosen Tabulator Stop Bar Set Screw on either end, top, of the Tabulator Stop Bar. The Tabulator Stop may then be removed and replaced. Tighten Tabulator Stop Bar Set Screws.

(2) Tabulator Stop Set Lever should be free on its bearings and should return to normal position to clear tops of all Tabulator Stops by 1/16" after the Set Key has been released. Adjustment may be made after loosening Set Lever Adjusting Screws, by positioning collar to provide proper clearance. Tighten Set Lever Adjusting Screws when adjustment has been made.

Set Blade of Tabulator Stop Set Lever should be positioned directly over Tabulator Stop to contact only one stop. Adjustment may be made by forming Set Lever Blade Arm.

b. Clear Mechanism:

(1) Tabulator Stop Release Lever should be free on its pivot and Tabulator Stop Release Lever Spring should be positioned to return Release Lever to normal position after use. (Note position of Spring on lever and on Tabulator Stop Rack Adjusting Screw in inset.)

(2) Tabulator Stop Rack Adjusting Screw, being Eccentric, may be adjusted to raise or lower Tabulator Bar in its relation to Tabulator Stop Bracket (see Tabulator).

 

125
 
Woodstock Keyset Mechanism
 

126
 
L. C. SMITH

1. As the Set Keylever is depressed, action of the Set Lever Connection moving rearward and Stop Setter Link (Set) and Tabulator Setter Carrier moving downward, the Tabulator Stop Setter contacts the lower protrusion of the Tabulator Stop moving it downward into set position. When the Clear Keylever is depressed, action of the Clear Lever Connection, moving rearward and the Stop Setter Link (Clear) moving upward, causes the Tabulator Stop Setter to engage the upper protrusion of the Tabulator Stop and push it up into inactive position. Downward movement of the Stop Set Carrier is limited by the Stop Setter Carrier Limit Screw. The Tabulator Stop Setter performs the dual function of setting and clearing the Tabulator Stops, the Stop Setter Carrier moving up or down, depending upon whether the Set or Clear Keylever is depressed.

2. ADJUSTMENTS:

a. Tabulator Stop Setter:

(1) The Tabulator Stop Setter must be aligned with upper and lower protrusions of the Tabulator Stop. Adjustment may be made by loosening Tabulator Stop Setter Binding Screw, positioning Stop Setter and tightening Binding Screw when adjustment has been made.

(2) The Tabulator Stop Setter must be positioned centrally between a Set Tabulator Stop upper protrusion and the lower protrusion of an inactive Tabulator Stop. Adjustment may be made by raising or lowering Stop Setter Link (Set) by forming Stop Setter Adjustment.

b. To Remove Tabulator Housing remove Tabulator Clear and Set Link Screws connecting Links to Tabulator Stop Setter. Remove both Links. Remove two (2) Tabulator Bracket Screws (Upper) and two (2) Tabulator Bracket Screws (lower). Disconnect Stop Setter Carrier connection. Tabulator Housing may be removed.

 

127
 
LC Smith keyset mechanism
 

128
 

TABULATOR

REMINGTON

1. As the Tabulator Bar is depressed, the Connecting Link is moved rearward causing the Tabulator Bell Crank Adjusting Screw to contact the Stop Blade at point X, and raise the Stop Blade and Friction Bail. The Friction Bail Escapement Loose Dog Release Lip contacts and moves the Escapement Loose Dog downward out of engagement with the Escapement Wheel tooth permitting free movement of the carriage (subject to the braking action of the Tabulator Friction Arm Brass Friction Screw on the Escapement wheel) until the Stop Blade contacts a set Tabulator Stop. When tabulation is completed, release of the Tabulator Bar permits the Escapement Loose Dog to contact the Escapement Wheel Tooth just prior to release of the Tabulator Stop by the Stop Blade.

2. ADJUSTMENTS:

a. The Tabulator Rack should be so positioned that when the Tabulator Bar is slowly depressed, Stop Blade will enter centrally between two set tabulator stops. Adjustment is made, after loosening Tabulator Rack mounting Screws on either end of the Tabulator Rack, and moving the Rack to the right or left by coming in on one Tabulator Rack Adjusting Screw while going out on the other until the Rack is properly positioned. This adjustment may affect Keyset and Clear mechanism (see Keyset Mechanism).

b. Escapement Loose Dog Release (Lip "B") should be positioned so that when the Tabulator Bar is depressed, Lip "B" will move the Escapement Loose Dog out of engagement with Escapement Wheel tooth. In normal non-operating position Lip "B" must not limit the upward movement of the Escapement Loose Dog. Escapement Loose Dog Release may be formed at Point "C" to provide proper adjustment.

c. Tabulator Friction Screw Arm should be adjusted to provide braking power to the Escapement Wheel through pressure of its Brass Friction Screw when the Tabulator Bar is depressed. Adjustment is made with the Tabulator Friction Spring and screw to apply pressure to the Friction Screw. Tabulator Friction Support Screw may be adjusted to position Brass Friction Screw flush with Escapement wheel when Tabulator Bar is depressed. In event Stop Blade binds or sticks on Tabulator Stop, friction may be relieved by adjusting Tabulator Friction Support Screw. Brass Friction Screw and Nut provide adjustment for wear.

d. Tabulator Friction Bail, in normal non-operating position, must hold the Brass Friction Screw just clear of the Escapement Wheel. Adjustment may be made by forming lower extremity of Friction Screw Arm.

e. Springs. Escapement Loose Dog Release Spring, Tabulator Friction Bail Spring and Bell Crank Spring must be properly connected and must provide sufficient tension for return of their respective parts to position after tabulating.

f. Tabulator Bell Crank Adjusting Screw may be adjusted to provide proper lift to Stop Blade. Care should be taken that the amount of purchase of Stop Blade on Tabulator Stop does not prevent Stop Blade from clearing stop quickly and positively when Tabulator Bar is released.

g. Ribbon Throw-out Screw operating on Pinion Release Bell Crank mechanism must be adjusted so that the Pinion Release Bellcrank Link will throw Spring Drum Pinion out of mesh with the Spring Drum Gear when tabulating. (See Ribbon Feed.) Tighten set screw when adjustment has been made.

 

129
 
Remington tabulator
 

130
 
ROYAL

1. The two mechanisms for Tabulator operation are presented in the drawing. The old style mechanism equipped with Friction type Tabulator Brake as pictured in top drawing, the mechanism of which works in conjunction with the Margin Release Mechanism, is used on Royals below 2,462,654. In this case, the Tabulator-Margin Release Link Lever performs the Tabulator operation of disengaging the rack from the pinion by raising the Tabulator Rack Lift Lever and engaging the friction brake shoe on the carriage while moving forward the Tabulator Finger to engage a set Tabulator Stop. It also performs the Margin Stop Release operation (when Margin Release Keylever is depressed) of disengaging the Center Stop from the Margin Stop by action on the Line Lock Lever, permitting the carriage to continue through the set Margin Stop Position.

The new style mechanism, Royals above 2,462,654 serial, equipped with Tabulator Governor Pinion Brake, operates separately from the Margin Release Mechanism. Depression of the Tabulator Keylever, through its connections, raises the Brake Gear to mesh into the Rack and raise the rack from its position in the Escapement Pinion and thus apply braking power (slowing down carriage movement) by action of the Tabulator Brake Spring tension on the Tabulator Brake Friction Hub with which the Brake Gear functions.

2. ADJUSTMENTS:

a. Tabulator Equipped with Old Style Tabulator Brake:

(1) Tabulator-Margin Release Link Lever must be positioned as specified in Margin Stops and Line Lock 2b (1).

(2) Margin Release Keylever Extension (rear upturned extension) must rest against Tabulator Keylever Extension. Adjustment may be made by forming Margin Release Keylever Extension. (Test by depressing Margin Release Key to determine that Margin Stops clear Center Stop in passing.)

(3) Other Adjustments, refer to Paragraph 2b (1).

b. Tabulator Equipped with Tabulator Governor Pinion Brake:

(1) Finger Link Lever (adjustable by loosening two adjusting screws) governs the positioning of the Extension on Tabulator Finger to full contact with Center Stop Bracket when Tabulator Keylever is fully depressed (Keylever Extension contacting Ribbon Spool Bracket). Tabulator Finger should be adjusted with Tabulator Keylever depressed, to provide clearance of 1J32" with unset Tabulator Stops.

(2) Tabulator Link may be adjusted (by loosening Link Adjusting Screws and positioning the two sections of the link) so that simultaneously Keylever Extension Offset contacts Ribbon Spool Bracket and Tabulator Rack Lift Lever raises rack sufficiently to clear Escapement Wheel Pinion. Timing of these operations, including contact of Extension on Tabulator Finger with Center Stop Bracket, should be perfected by adjustment of the Tabulator Link and the Finger Link Lever.

(3) The Tabulator Governor Pinion Brake consisting of Tabulator Gear, Hub and Brake Spring (in hub) is so constructed that the Gear is provided with free movement (partial revolution) before contacting the Hub and its brake pressure against the Gear. The Brake mechanism spring seated in notched arm is adjustable to increase or decrease application of tension by the Hub Brake Spring, particularly applying to adjustment for long carriage machines.

(4) Tabulator Rack Lift Lever must be synchronized with Brake Gear and Brake Gear must mesh into rack without bottoming. Adjustment is made after loosening Tabulator Rack Lift Lever binding screw (on Finger Link Lever) positioning Tabulator Rack Lift Lever and tightening binding screw when adjustment has been made.

(5) Tabulator Keylever must be free on its pivot and Tabulator Link must be free on its Keylever Fulcrum Connecting Rivet.

(6) Tabulator Rack should be adjusted (by moving to left or right after loosening Rack nuts) so that Tabulator finger, in inactive position, will set a fraction to the left of a set tabulator stop. (See Keyset Mechanism.)

 

131
 
Royal tabulator
 

132
 
UNDERWOOD

1. Depression of the Tabulator Bar moves the Tabulator Stop Lever upward in position to contact a set tabulator stop. The protruding arm of the Stop Lever contacts the Tabulator Brake Arm moving the Brake Shoe in to contact the Brake Band (which slows the carriage movement) and also causes the KST Actuating Shaft Lever to contact and depress the 'Tabulator Lever Arm moving the Rack from engagement with the Pinion to permit free movement of the carriage.

2. ADJUSTMENTS:

a. Tabulator Rack must clear Tabulator (housing) frame by 3/16" (see inset drawing). Adjustment may be made by forming the Tabulator Rack Brackets at either end of Tabulator Rack. Tabulator Rack must be positioned (carriage to extreme right) so that Key Set Stop Lever lies directly over the first Tabulator Stop. Adjustment may be made by loosening Tabulator Rack Screw lock nuts (at both ends of Tabulator Rack) and moving rack to the right or left, as may be necessary, with Tabulator Rack Adj. Screw. Tighten Rack Screw Lock Nuts when adjustment has been made.

b. KST Actuating Shaft Lever must clear Tabulator Lever Arm by not less than .005" (point indicated on drawing) when in inactive position. The KST Actuating Shaft Lever Roller must raise Rack to provide sufficient clearance with Pinion but Rack must clear carriage frame when in up position. Adjustment may be made by loosening Shaft Lever Set Screws (2) and moving KST Actuating Shaft Lever up or down as may be necessary. Tighten Set Screws when adjustment has been made.

c. Tabulator Lever Pivot must be adjusted to provide snug fit for the Tabulator Lever without binding. Adjustment is made by loosening Tabulator Lever Pivot Set Screw (see Rack, Pinion and Starwheel) and move Tabulator Lever Pivot in or out, as may be necessary. Tighten Tabulator Lever Pivot Set Screw when adjustment has been made.

d. Tabulator Brake. Tension of Tabulator Brake Arm should be sufficient to provide proper braking of Brake Band to slow down the speed of the carriage. Adjustment may be made with Tabulator Brake Arm Tension Screw. Brake Band ends must clear the Brake Shoe, adjustment being made after loosening Brake Band Anchor set screws by positioning Brake Band Anchor.

 

133
 
Underwood tabulator
 

134
 
WOODSTOCK

1. Depression of the Tabulator Key on the Woodstock Typewriter, moves the Tabulator First Lever down, causing the Second Lever extension to raise and the Tabulator Second Lever Shoe to contact and raise the Rack, which permits free movement of the carriage until the Tabulator Stop racket contacts a set Tabulator Stop. In this operation, the Tabulator Brake Plate, acting on the Tabulator Bar, slows down the carriage movement. As the stop contacts the Tabulator Stop Bracket arm, which provides a shock absorber for the Tabulator Stop Arm, the Bracket Arm moves out to permit the Stop to contact the Stop Arm and then the Bracket Arm moves back into position locking the Stop between the Stop Bracket Arm and the Stop Arm.

2. ADJUSTMENTS:

a. Tabulator Stop Bar. At either end of the carriage casting, opposite the Tabulator Stop Bar, Tabulator Stop Bar Adjusting Screws and Lock Nuts are provided for movement of the Bar to either end of the carriage. If Tabulator Stops are set at 10-20-30, etc., and on depressing the Tabulator Key, the carriage stops at 9-19-29 or at 11-21-31, the Tabulator Bar is too far to the right or left and must be adjusted. Adjustment may be made by loosening the Tabulator Bar Adjusting Screws and Lock Nuts, and backing out on one screw, while coming in with the other. Test and adjust until the Tabulator Bar is positioned properly, and it is possible to tabulate to 10, where the carriage should stop, then back space and tabulate and the carriage should again stop at 10. (See Main Carriage, 2b for removing and replacing Tabulator Bar.)

b. Tabulator Second Lever Shoe may be raised or lowered on Tabulator Second Lever to permit raising rack higher or lower, by loosening Tabulator Second Lever Shoe binding screws and positioning Shoe properly. Tighten Binding Screws when adjustment has been made. Facing of the Second Lever Shoe should clear the rack by 1/64" when Tabulator Key is in normal non-operating position.

c. Tabulator Keylever adjusting spring should provide sufficient tension to return Tabulator Keylever promptly after use and to return Tabulator First and Second Levers to proper inactive position. Tabulator Keylever Adjusting Spring and screw are located in sub-frame casting, under rear of machine.

 

135
 

Woodstock tabulator

 

136
 
L. C. SMITH

1. When the Tabulator Bar is depressed, the lower extremity of the Tabulator Bar Bracket moves rearward. Since it is engaged in the lower extension of the Tabulator Sub-lever which pivots midway up the Tabulator Housing, as the lower extension moves back (toward the rear) the upper extension moves forward, moving the Tabulator Counter Stop into position to engage the lower protrusion of a Set Tabulator Stop. The protrusion on the lower extension of the Tabulator Sub-lever engages the cross bar of the Tabulator Carriage Release Bellcrank which pivots in the Tabulator Housing. Continued movement rearward causes the Tabulator Carriage Release Bellcrank mechanism to move the Carriage Release Bellcrank downward disengaging the Loose Dog from the Escapement Wheel tooth, permitting free carriage movement to the left. At the same time the Tabulator Brake Bellcrank engages the Check Pawl against the teeth of the Detent Ratchet braking the Main Spring Drum to slow down movement of the carriage. (See Mainspring and Drawband, Paragraph 1.)

2. ADJUSTMENTS:

a. Tabulator Counter Stop must be positioned to enter between two adjoining Set Tabulator Stops without contacting either one. Adjustment may be made after loosening Tabulator Rack Binding Screws by moving Tabulator Rack to the right or left. Tighten binding screws when adjustment has been made.

b. Carriage (Wheel) Release Bellcrank [see Rack, Pinion and Star-wheel, Paragraph 2c (2)] must be formed properly to release (push down) Loose Dog from engagement with Starwheel tooth when sub-lever pivots. This action is performed by contact of the sub-lever lower protrusion with the Tabulator Carriage Release Bellcrank through the adjusting arm connection. When the Tabulator Counter Stop is all the way forward, the Tabulator Brake Bellcrank should lock the Drum Detent at the same time the Carriage Release Bellcrank disengages the Loose Dog from the Star-wheel tooth. Adjustment may be made by adjusting position of the Adjusting Arm (raising or lowering as may he necessary), after loosening Adjusting Arm Screws.

c. To Remove Tabulator Housing, see Keyset Mechanism.

 

137
 
LC Smith Tabulator
 

138
 

BACK SPACER

REMINGTON

1. The Remington simplified Back Spacer mechanism shown in drawing is self-explanatory. The pinion wheel is solidly attached to the Starwheel on the Remington #17. Action of the Back Space Pawl moves the pinion and starwheel (including carriage) back while the Escapement Loose Dog acts as a pawl returning to position, after the starwheel tooth has passed, to engage the starwheel tooth.

Back Space Pawls are not interchangeable on the Remington #17. As noted in the drawing, the Pica and Elite Back Space Pawls have different forms. This is also true of 6, 8, 9 1/3, 14 and 16 space machines. Care should be taken, in the event of a replacement, that the proper Back Space Pawl is used.

2. ADJUSTMENTS. Before attempting adjustments, determine that proper Back Space Pawl and proper Pinion and Starwheel are used.

a. Back Space Pawl must fully engage the Starwheel tooth when Back Spacing. The Escapement Rocker should be located in such a position that the Loose Dog holds the Starwheel in position for full engagement by the Back Space Pawl. Back Space Pawl should not bind on Back Space Pawl Screw.

b. Back Space Pawl Spring must be connected and have sufficient tension to retain the Back Space Pawl out of engaging position when not in use.

c. Back Space Keylever should be free on its pivot and Keylever Spring should have sufficient tension to return keylever to inactive position after use.

d. Back Space Lever Bail should be free on its pivots and Lever Bail Screws and nuts, left and right, should be tight.

e. To Remove Back Space Pawl, remove Back Space Pawl Screw nut. Remove Back Space Pawl Screw. Disconnect Back Space Pawl Spring. The Back Space Pawl may now be removed.

 

139
 

Remington back spacer

 

140
 
ROYAL

1. When the Back Space Keylever is depressed, action of the keylever on the Pawl Lift Lever, contacting the Pawl Swinging Arm which is guided by the Back Space Guide and Pawl Guide Post, forces the Back Space Pawl to engage Rack tooth. In this operation, Back Space Escapement Wheel Stop acts as Back Lash Pawl on the Starwheel, holding the Starwheel tooth, as the pinion permits the carriage to back up one space.

2. ADJUSTMENTS:

a. Back Space Pawl should engage tooth of the Rack properly being guided into position by the Pawl Guide Post fitting in the Back Space Guide. If back spacing more than one space, the Back Space Guide (facing machine from rear) should be formed to the left. If under spacing, the Back Space Guide should be formed to the right.

In normal non-acting position, rear extension of back space pawl should position against the Back Space Pawl Lift Lever at contact point shown in drawing. The Lift Lever must be adjusted so that it will not hold Back Space Pawl out of position. (Rack teeth should clear Back Space Pawl.) Adjustment may be made by forming Back Space Keylever, peening at the top edge of the keylever lowers Pawl Lift Lever contact point. Peening at bottom edge of the keylever raises Pawl Lift Lever contact point. With Back Space Pawl and Pawl Lift Lever in proper contact position and with back space keylever inactive, Pawl Guide Post must position in opposite end of slot in Back Space Guide (opposite from position shown in Rear View Drawing). Proper clearance between lower arm of Back Space Pawl and Back Space Guide spring plate must be provided.

b. Back Space Escapement Wheel Stop, with back space keylever depressed, should be adjusted to permit maximum of 1/32" play between starwheel tooth and stop point on Wheel Stop, point indicated in drawing. Adjustment is made by loosening Back Space Escapement Wheel Stop Adjusting Screws and moving Back Space Escapement Wheel Stop to proper position. Tighten Adjusting Screws after adjustment has been made.

c. Back Space Rack Lock should be adjusted so that with Rack Space Keylever depressed, Rack Lock will hold Rack in position in mesh with Back Space Pawl, preventing overthrowing with minimum of pressure. Adjustment is made with Rack Lock Eccentric.

d. Pawl Swinging Arm should be positioned to prevent bind or excessive side play. Adjustment is made by Loosening Spring Barrel Hub Set Screw and moving Spring Barrel back until lost motion has been eliminated. Tighten Spring Barrel Hub Set Screw when adjustment has been made.

e. Back Space Pawl Spring should provide sufficient tension to return Back Space Pawl to inactive position.

f. Back Space Keylever Extension provides limit stop for Back Space Keylever, when depressed, contacting Keylever Bracket. With keylever depressed and thin sheet of paper inserted between Extension and Bracket at point of contact, slight friction on paper will determine correct adjustment. If necessary, adjust by forming Back Space Keylever Extension.

 

141
 
Royal back spacer
 

142
 
UNDERWOOD

1. Proper position of the Underwood Back Spacer Keylever in its relation to the Keylever Stop is essential to the proper performance of the mechanism. As the Back Space Key is depressed, the Back Space Pawl Carrier positions the Back Space Pawl in the Rack Frame and sets the wheel lock in position directly under tooth in the Escapement Wheel. Complete depression of the Back Space Keylever moves the Back Space Pawl to the right, drawing the carriage with it, to perform the back spacing operation. The Pinion Wheel moves with the Rack Frame in this operation being released by the Pinion Pawl.

2. ADJUSTMENTS:

a. Back Space Pawl must be free on its pivot without excessive side play between the Pawl, the Pawl Carrier and the Pawl Support. Back Space Pawl in active position must engage in Rack teeth snugly without bottoming (clearance of approximately .003" between top of Pawl and full engagement position in Rack Teeth must be maintained). Position adjustment of Pawl in rack teeth may be made by loosening Eccentric Set Screw and turning Back Space Pawl Carrier Eccentric to the left or right, raising or lowering pawl to its proper position. Tighten Eccentric Set Screw after adjustment has been made. In active position, moving in or out of Rack teeth, Back Space Pawl must not catch or bind on Rack Teeth and must seat fully. Adjustment may be made by loosening Eccentric Set Screw, and moving Pawl in or out with the Tabulator Lever Stud Eccentric. Tighten Eccentric Set Screw when adjustment has been made.

b. Back Space Keylever should just contact Keylever Stop in inactive position. Adjust by forming Back Spacer Keylever Shaft Arm at point indicated in drawing.

Overthrowing, when Back Spacer Keylever is depressed quickly, can be corrected by replacing Pawl Stop Washer with washer of proper thickness which can be made accessible by removing Back Space Pawl Carrier Eccentric after releasing Eccentric Set Screw. Adjust Eccentric properly when washer has been replaced. Tighten Eccentric Set Screw when adjustment has been made.

c. Wheel Lock must fit freely in Back Space Pawl Carrier slot and must move into position with minimum clearance between back of Escapement Wheel (Starwheel) tooth to prevent binding. Adjust by forming Wheel Lock.d

d. Back Space Pawl Carrier Spring (flat) fitted on Pawl Carrier, should provide sufficient tension to Pawl. Adjust by forming Pawl Carrier Spring.

e. Back Spacer Link Spring should provide sufficient clearance to return keylever to its position in Keylever Stop and to return Back Space Pawl Carrier to its normal inactive position. Adjustment is made by forming extended end of Back Spacer Link Spring.

 

143
 

Underwood back spacer

 

144
 
WOODSTOCK
1. There are a few contributing factors that affect Back Spacing on the Woodstock Typewriter, other than the mechanism pictured in the drawing. Before attempting any adjustments, check the Back Lash Pawl on the Escapement Rocker. When the Escapement Wheel turns it should just slip under the teeth without hanging up, permitting only a little back play of the Escapement Wheel. It is adjusted by loosening the Back Lash Pawl Screw, moving the Pawl up or down as may be necessary and then locking the screw.

The Sub-frame binding screws, attaching the sub-frame to the Main Base Frame (two located on either side of the base in the opening just below the carriage), if loose, will throw the Back Spacer out of adjustment. Check and tighten.

Several changes have been made on Woodstocks above 580,000 serial as to the Pivot position of the Back Space Bellcrank. If, as in the drawing, Back Space Bellcrank is pivoted on Escapement Limit Stop bracket held to the top plate extension arms by the Back Space Bracket Screws,

  these screws should be tightened before any adjustment is made on Back Space mechanism.

2. ADJUSTMENTS:

a. Back Space Pawl. should engage rack about 2/3 the length of the rack teeth. Back Space Pawl Spring should have sufficient tension to hold Back Space Pawl erect when the Back Space Key is depressed but should not hold the Pawl erect when key is in normal unused position.

b. Back Space Bellcrank Eccentric Nut adjusts position of Back Space Pawl to properly engage rack (2/3 the length of the rack teeth). Tighten lock screw after adjusting.

c. Adjusting Plate positions the Back Space Pawl in its relation to the Rack. Held in position by two Plate binding screws fitted into adjustable slots, the Plate should be positioned to guide the Back Space Pawl into the Rack teeth, without binding or slipping off. The Adjusting Plate should be positioned so that in slow operation, the Back Space Pawl will stop against the end of the plate a little after the Escapement pinion pawl has moved over the pinion tooth.

 
L. C. SMITH
1. Depression of the Back Space Keylever moves the Back Space Dog into mesh with the Pinion Wheel through the action of the Shaft connection and the Dog connection. As the Keylever continues its downward movement the Back Space Dog moves to the left and the pinion wheel rotates to the right, moving the carriage with it, through the pinion engagement in the Rack. The Starwheel, moving with the pinion (backward), engages and moves the Escapement Loose Dog (acting as a pawl) out of position to permit the Starwheel Tooth to pass. The Escapement Loose Dog must be free on its pivot and Loose Dog Spring tensioned properly to return Loose Dog to normal position. Limit of throw of the Back Space Dog is governed by the Dog Stop and normal inactive (rest) position is controlled by the Dog Rest.

2. ADJUSTMENTS. Before attempting adjustments, check Escapement Loose Dog position in relation to Starwheel Tooth. If Loose Dog felt pads are beaten thin the Loose Dog cannot position itself properly with Starwheel Tooth (see Escapement). Determine that Pinion Wheel and Escapement Wheel agree with an equal number of teeth.

Back Space Dog Teeth should engage pinion teeth properly and the throw of the Dog should be sufficient to cause one-step back spacing. Adjustment may be made with Dog Connection Bellcrank Adj. Screw, after loosening lock nut. Inactive position of Back Space Dog (on Dog Rest) should

  position Dog teeth to clear the pinion teeth by 1/16" and Back Space Dog Spring must provide sufficient tension to return Dog to inactive position when keylever is released. If Dog Rest has been deformed by maladjustment, it may be formed to proper clearance. Dog teeth must enter pinion properly and Dog must have free movement in Stop Slot. If lower Stop Slot is burred it will cause a bind in Back Space Dog. Burr should be removed by filing.

To Remove and Replace Back Space Dog (facing machine from rear), remove two (2) Bell Bracket Screws, removing Bell Assembly. Remove two (2) screws (one directly under Bell, the other to right under Right Bell Bracket Binding Screw). Disconnect Back Space Pull Link. Remove Back Space Dog Assembly.

Shaft should be free on its pivots with a minimum of end shake. Adjustment may be made by positioning Shaft Bracket after loosening Shaft Bracket Binding Screws.

Back Space Lever Adjusting Spring should provide proper tension to return keylever to normal position when released. Adjustment may be made with Back Space Lever Spring Adjusting Screw; turning screw clockwise will increase tension; turning screw counter-clockwise will decrease tension.

Back Space Link should not be formed for adjustment. If maladjusted, link should be removed from machine and straightened.

 

145
 

Woodstock back spacer

LC Smith back spacer

 

146
 

ALIGNMENT
REMINGTON  ROYAL  UNDERWOOD  WOODSTOCK  L.C. SMITH

1. ALIGNMENT. The aligning of characters both vertically and horizontally through comparison with the master aligning letter, capital N and lower case n, requires careful application of special tools to accomplish a mechaniclike job. Attempt should not be made to overcome faulty soldering of type by aligning or forming of typebars. Alignment should not be attempted until all contributing factors listed below have been carefully checked and adjusted, if necessary:

a. Carriage, Sub-carriage or Segment fitted properly and all loose play eliminated.

b. Platen fitted properly, all end shake removed, true in its entire length and of proper size.

c. End shake in Rack eliminated.

d. Paper Feed mechanism adjusted properly.

e. Spring Drum tension adjusted properly.

f. Type bars free (not sticking) in segment slots; of uniform size and shape; clear guide properly and fit snugly in segment (new bars may be emeried down to fit segment slot properly).

g. Type bar links of proper size and shape and not binding.

h. Sub-levers formed properly to pull links and type bars without straining.

i. Escapement Racker fitting snug on pivots without binding.

j. Escapement Dogs positioned properly.

k. Escapement Trip set properly.

l. Universal Bar free on its pivots without excessive end shake.

m. Ring and Cylinder adjusted properly, platen parallel.

n. On-Feet and Motion adjustment properly made.

o. Shifting mechanism adjusted correctly.

p. Keylever Assembly tight in frame, sub-frame tightly fitted.

q. Type properly soldered to bar (if off more than .005" resolder the type head).

2. ALIGNING TOOLS AND METHODS:

Drawing 1. Type Bar Maulers (Starret). Mauling bar slightly below type head (back of bar) will lower character.

Type Bar Rollers, positioned on bar as shown in drawing, to form type bar for Ring and Cylinder (if off platen but on the ring) and at the same time lower character.

Drawing 2. Type Bar Maulers (Starret). Mauling bar slightly below type head (front of bar) will raise character.

Type Bar Rollers, positioned on bar as shown in drawing, to form type bar for Ring and Cylinder (if off ring but on platen) and at the same time raise character.

L. C. SMITH: Adjustments for raising or lowering character is accomplished by loosening type bar binding screw and raising or lowering type bar.

Drawing 3. Type Bar Offsetting Pliers to move a type head bodily to 'the right or left (after determining that full typed impression is had, both upper and lower case).

 

147
 

alignment tools

 

148
 
Type Bar Twisters, one holding, the other applying twisting pressure, where a type head is crowding to the left or right but only partial impression is secured.

Drawing 4. Type Bar Twisters, one holding, the other applying twisting pressure, to straighten type head.

Drawing 5. Type Cutting Pliers (Starret with special jaws) are used to spread characters apart slightly where imperfect type is to be used. Should be used carefully to prevent beheading type.

IMPORTANT. Type should be aligned to the type guide, to enter the guide freely and squarely. Three prong pliers and Type bar twisters are used for this purpose.

 

149
 
INDEX
Page
Introduction 1
Cover plates:
  Remington 2
  Royal 4
  Underwood 4
  Woodstock 6
  L.C. Smith 6
Main carriage:
  Remington 8
  Royal 10
  Woodstock 10
  Underwood 12
  L.C. Smith 12
Sub-carriage:
  Underwood 14
  Woodstock 14
Mainspring and drawband:
  Royal 16
  Underwood 16
  Woodstock 16
  Remington 18
  L.C. Smith 18
Motion and shift mechanism:
  Remington 20
  Royal 22
  Underwood 24
  Woodstock 26
  L.C. Smith 28
Platen:
  Remington 30
  Royal 30
  Underwood 30
  Woodstock 32
  L.C. Smith 32
Variable:
  Remington 34
  Royal 36
  Underwood 36
  Woodstock 36
  L.C. Smith 36
Tool set 38
  Ring and cylinder:
  Foreword 39
  Remington 40
  Royal 40
  Underwood 42
  Woodstock 42
Adjustment sequence 44
Paper feed:
  Foreword 45
  Remington 46
  Royal 46
  Underwood 48
  Woodstock 48
  L.C. Smith 50
Line space lever:
  Remington 52
  Royal 52
  Underwood 52
  Woodstock 54
  L.C. Smith 54
Margin stops and line lock:
  Remington 56
  Royal 58
 
Page
  Underwood 60
  Woodstock 62
  L.C. Smith 64
Rack, pinion and starwheel:
  Remington 66
  Royal 66
  Underwood 68
  Woodstock 68
  L.C. Smith 70
Universal bar:
  Remington 72
  Royal 72
  Underwood 72
  Woodstock 74
  L.C. Smith 74
Type bars 76
Escapement:
  Foreword 77
  Remington 78
  Royal 80
  Underwood 84
  Woodstock 86
  L.C. Smith 88
Space bar:
  Remington 90
  Royal 92
  Underwood 94
  Woodstock 96
  L.C. Smith 96
Keyboards 98
Ribbon feed:
  Foreword 99
  Remington 100
  Royal 102
  Underwood 104
  Woodstock 106
  L.C. Smith 108
Ribbon cover:
  Remington 110
  Royal 112
  Underwood 114
  Woodstock 116
  L.C. Smith 116
Keyset mechanism:
  Remington 118
  Royal 120
  Underwood 122
  Woodstock 124
  L.C. Smith 126
Tabulator:
  Remington 128
  Royal 130
  Underwood 132
  Woodstock 134
  L.C. Smith 136
Back spacer:
  Remington 138
  Royal 140
  Underwood 142
  Woodstock 144
  L.C. Smith 144
Alignment 146
* U. S. Government Printing Office: 1945-616432
 

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