US614917A - Type-writing machine - Google Patents

Description

Patented Nov. 29, I898. .1 ILLIAMS. TYPE NG MACHINE.

(Application filed June 20, 1896.)

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No. 6l4,9l7. I Patented Nov. 29, I898. J. N. WILLIAMS.

TYPE WRITING MACHINE.

(Application filed June 20, 1896.)

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No. 6l4,9l7. Patented Nov.'29, I898.

J. N. WILLIAMS.

TYPE WRITING-MACHINE. (Application filed June 20, 1896.)

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' UNITED STATES PATENT OFFICE.

JOHN N. \VILLIAMS, OF DERBY, CONNECTICUT.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 6l4,9l7, dated November 29, 1898.

Application filed June 20, 1896. Serial No. 596,238. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN N. WILLIAMS, a citizen of the United States, residing at Derby, in the county of New Haven and State of Connecticut, have invented certain new and usef ul Improvements in Type-WVriting Machines, of which the following is a specification.

My invention relates to that class of machines in which the paper-carriage is adapted to be moved forward and backward from a normally central position, so as to receive impressions from any one of the three types mounted upon the type-bars; and my invention consists of certain improvements in carriage centering and shifting devices and in the scale-bar and forward paper-guides of the carriage. For locking the carriage in central position and shifting it forward and backward I provide a pair of vertically-sliding shiftingkeys, formed with cam-slots inclined in opposite direotions and engaging lugs or pins projecting from the shifting-bar of the carriage.

The shifting-keys are provided with springs for holding them normally in raised position for automatically centering and locking the carriage in central position. The keys are guided in their movement by suitable guides, such as grooved rollers, and each key is formed with a nose and a shoulder, one of which is adapted to lock the carriage against movement in one direction when the carriage is in central position, while the other is adapted to look the carriage against movement in the same direction when the carriage is in shifted position. Both nose and shoulder of each shifting-key engage the pin or lug on the same side for accomplishing their functions, the carriage being in central position when one operates and in one of the shifted positions when the other operates. My springactuated cam-keys take the place of the usual centering-springs in addition to their function of shifting the carriage.

Instead of utilizing the forward paperguides as springs for the pivoted scale-bar, as heretofore, I secure the ends of the paperguide strips to a rigid bar mounted in lugs on the carriage below the pivots of the scalebar and provide spiral springs for holding the scale-bar in engagement with or elevated from the platen, the upper ends of the spiral afterward point out the novelty with more particularity in the accompanying claims.

In said drawings, Figure 1 is a detail plan view of partof a machine, showing my improvements applied thereto. Fig. 2 is a detail sectional view showing the arrangement of the forward paperguide and scale-bar. Fig. 3 is a detail side elevation of the forward part of a machine. Figs. 4 and 5 are detail side elevations showing my improved carriage-shifting devices in the two shifted positions of the carriage. Fig. 6 is a detail front perspective view of a portion of the carriage, showing particularly the scale-bar and one of its controlling-springs.

All of the figures of the drawings are drawn full size.

1 is the main stationary frame, within which the paper-carriage is mounted. The carriage comprises the girder track-frame 2, adapted to move forwardand back from a central normal position, and a traveling carriage 3, mounted upon the track-frame 2 and adapted to move step by step as the keys are struck.

5 is the paper-platen journaled in the carriage 3, and 6 is the scale-bar formed with lugs 7, which are journaled in the lugs 80f the carriage-frame.

9 is a bar rigidly mounted between the arms 10 of the carriage-frame, and 11 are the forward curved paper-guides mounted upon the carriage and having their outer ends secured to the bar 9.

12 are spiral springs attached to the scalebar 6 above the line of its pivots and to the '6 against the paper on the platen with a yielding pressure when the machine is operating or elevated from the platen when it is desired to insert a new sheet.

15 is the longitudinally-movable shiftingbar rigidly secured to the girder track-frame 2 and extending forwardly, where it is provided with an antifriction-roller 16, which bears upon a portion of the main frame 1 of the machine.

17 and 18 are lugs or pins projecting out from the shifting-bar 15 and having journaled upon them the antifriction- rollers 19 and 20.

25 and 26 are the vertically-sliding shiftingkeys. Both keys are constructed alike, with the single exception that they are reversed, and therefore a description of one will suffice for both. Each of the shifting-keys is formed with a vertical nose 27, adapted to rest 11ormally in engagement with one of the antifriction- rollers 19 or 20. Extending up from nose 27 is an inclined cam-slot 28.

29 is a shoulder formed with or without a slight notch or groove cut in it. The shoulder 29 is shorter than the nose 27 to allow the lug or pin which is in engagement with the nose 27 to pass freely away therefrom in a horizontal direction under the action of the other shifting-key. Each key has a depending pin 30, which passes through a circular opening in the main frame 1 of the machine and is confined by means of a pin 32 or other suitable equivalent device.

is a spiral spring mounted upon each of the rods 30 and adapted to hold the shiftingkeys normally in raised position.

is a suitable boxing adapted to inclose the parts, and 36 are grooved antifrictionrollers engaging the sliding keys on the opposite sides and confining and guiding them in their vertical movement. The front plate 37 of the boxing is removed in the drawings to show the construction of the shifting device.

It will be observed from Fig. 3 that when the carriage is in its normal central position the noses 27 of the shifting-keys will both be in engagement with the shifting-bar, so that it will be impossible for the carriage to move forward or backward. \Vhen the carriage is shifted to its rear position, as incated in Fig. i, by the depression of the key 25, it can be locked in such shifted position by depressing the key 26 sufficiently to bring the shoulder 29 behind the friction-roller 20 on the pin 18. The friction between the shoulder 29 on the key and the antifriction-roller of the shifting-bar will be sufficient to withstand the pressure of spring 30 and will therefore hold the carriage in shifted position. The engagement between shoulder 29 of key 26 can be released by a slight depression of key 25, causing the bar 15 to move slightly forward and allowing spring 30 to elevate key 26 or by pulling upwardly on key 26. lVhen the carriage is shifted into forward position, as shown in Fig. 5, by the depression of key 26, it can be locked in such positionby a slight depression of shifting-key 25, the shoulder 29 of said key 25 engaging the friction-roller l9 and holding the carriage i in forward position against the tendency of the other spring 30. The key 25 can be readily released by slightly depressing key 26 or by pulling upwardly on key 25. The carriage is automatically returned to central po sition by the reverse action of the cam-slot of the same key which shifted it, the reverse movement being effected by the key-spring. The noses 27 of the shifting keys arrest the return movements of the carriage at the proper central point and automatically lock it in this position.

The improvements will be clear from the above description. I find the shifting device is very effective and the incline of the slots 28 of the shifting-keys is so pronounced that the spiral springs 33 will take the place of the large centering-sprin gs for automatically centering the carriage in addition to performing their functions of shifting the carriage,rendering it unnecessary to provide such strong centering-springs as I have heretofore em ployed. It will be observed that the slots 28 extend in opposite directions or toward each other. It will be obvious that the same result can be obtained by having the slots inclined away from each other with the shoulders 29 arranged inwardly or toward each other.

Having thus described my invention, what I claim, and'desire to secure by Letters Patent, is-

1. In a type-writer, the combination of the platen, with the pivotally-snpported scalebar, the bar rigidly attached to the carriage, and spiral springs attached at one end to the scale-bar above the line of pivot, and to the rigid bar at the other end below the line of pivot, whereby the scale-bar will be held in engagement with or elevated from the platen, substantially as and for the purpose set forth.

2. In a type-writer, the combination of the carriage, the platen journaled therein, the bar rigidly mounted in the carriage, the curved paper-guides mounted on the carriage and having their ends attached to the bar, the scale-bar pivoted to the carriage above the rigid bar, and spiral springs attached at one end to the rigid bar and at the other end to the scale-bar above the line of pivot, as set forth.

8. In a type-writer, the combination of a main frame supporting the type-bars and operating devices, a paper-carriage supported in the main frame and adapted to be shifted back and forth therein, two independent carriage shifting keys operatively connected with the carriage; and means whereby each of said keys is adapted to lock the carriage in shifted position when shifted by the other key, substantially as set forth.

4. In a typewriter, the combination of a main frame supporting the type-bars and other operating devices, a paper-carriage supported in the main frame and adapted to be shifted back and forth therein, a shifting-bar connected with the carriage, and two inde pendent cam-keys engaging the shifting-bar and so shaped and arranged that they will normally look the carriage in central position, and means whereby each key can be moved to lock the carriage in shifted position when the carriage is shifted by the other key,

substantially as set forth.

5, In a type-writer, the combination of a shiftable carriage, with two sliding cam-keys each of which is adapted to shift the carriage in one direction, lock the carriage against accidental movement in the same direction when in normal position with the carriage at rest, and lock the carriage in shifted position when shifted in the opposite direction by the other key, as set forth.

6. Ina type-writer, the combination of a shiftable carriage, a shifting-bar, attached to the carriage, lugs or projections on the shifting-bar, and sliding shifting-keys formed with oppositely-inclined cam-slots and lockingshoulders; each key being adapted to shift the carriage in one direction and lock it against accidental movement in the same direction when the carriage is at rest in central position, by reason of the engagement of its cam-slot with the lug or projection of the carriage-shifting bar, and also to. lock the carriage in shifted position by reason of the engagement of its shoulder with one of the lugs or projections of the shifting-bar when the carriage is shifted in the opposite direction by the otherkey, as set forth.

7. In a type-writer, the combination of a shiftable carriage, a longitudinally-movable shifting-bar attached to the carriage, sliding shifting-keys formed with oppositely-inclined cam-grooves and notched or grooved lockingshoulders, and lugs or projections on the shifting-bar engaged by the shifting-keys, as set forth.

8. In a type-writer, the combination of a shiftable carriage, a shifting-bar attached thereto, lugs or pins projecting from the shifting-bar, antifriction-rollers journaled upon said pins, sliding shifting-keys formed with oppositely-inclined cam-slots which engage said antifriction-rollers, suitable guides for the sliding keys, springs for holding them normally in raised position, and shoulders and noses on the keys for engaging the rollers and locking the carriage in central and shifted positions, as set forth.

9. In a type-writer, the combination of a shiftable carriage, a shifting-bar attached to the carriage and provided with two projecting lugs or pins, and a vertically-sliding camkey engaging each lug or pin and locking the carriage against movement, each key looking against movement in a different direction andallowing movement in the opposite direction, substantially as set forth.

JOHN N. XVILLIAMS. \Vitnesses:

M. V. BIDGOOD, WM. E. KNIGHT.

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