US1077112A - Type-writing-machine action. - Google Patents

Description

J. ALEXANDER.

TYPE WRITING MACHINE ACTION. .APPLICATIONv FILED NOV. 4, 1912.`

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Patented 001.128, 1913.v

J. ALEXANDER.

TYPE WRITING MACHINE ACTION.

' APPLIOATION FILED Nom-4, 19,12. v 1 1 2o A Y /m/E/vron Jese Alex f ncfgr,

Patented 0013.28, 1913.

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entre; s Aans JESSE ALEXANDER, OF NEW YORK, N. Y., ASSIGNDR OF ONPE-HALF TO R. F. COCHRANE, OF MOUNT VER-NON, NEW YORK, AND ONE-HALF TO HERBERT W. LITTLE, OF NEW YORK, N. Y.

TYrE-wRIiiNG-MACHINE ACTION.

Specification of Letters Patent.

Patented 0011.28, i913.

Continuation of application Serial'No. 468,425, filed lecember 21, 1908. This appication led November 4,

. Y 191.2. Serial No. 729,326.

To all whom z't may concern.' Be it known that I, Jnssn ALEXANDER, citizen of the UnitedA States of America, and residing at New York, in the county of Kings and State of New York, have invented new and useful. improvements in TypeVriting-Machine Actions, of which the following is a specification.

My invention relates particularly to typewriter actions for machines of the front stroke visible writing type.

The main objectis to provide a simple construction having a quick and powerful printing action and a quick return movement. 1

-The invention contemplates the use of units each of which comprises a hinged key lever and a hinged type bar and a hinged sub lever or intermediate lever connecting the key lever and the type bar. The sub lever has a pin and slot connection with the key lever. and three points of connection with the type bar. One of these points of connection serves to start the type bar toward the printing position. Another effects the relative movement between the sub lever and the .type bar at a point intel mediate the beginning and end of the stroke.'

The third servesl to assist in the first part of the return movement of the type bar.

l Figure 1., is a side view and verticalsection showing one unit of the action in its normal position of rest, Fig. 2, is a detail sido View of one of the type bars. Fig. 3, is a side view and vertical elevation showing one of the units in the printing position. Fig. 4, is a side view of one of the sub levers.

The key lever l is hinged at 2 and may be under the lifting tension of the spring 3. 'the universal bar 4 extends beneath the key lovers and is connected byia link 5 to the cscapement rocker 6 which is under tension of the adjustable spring 7. The platen 8 is carried by a carriage construction movable transversely of the machine under the control of the escapement rocker.

The type bar 10 hasa hook 11 hinged ou the pivot rod 12 in the type bar segment 3. 'the front ends of the type bars rest4 in the bracket 14. .1

lach intermediate lever or sub lever 15 1s hinged on the pivot 16 and has a slot 17 to receive the pin 18. carried by the key lever l. y

Each type bar has a pinl9 normally engaged by the firent edge of its sub lever.

with a shoulder 20 at its rear for the pin 21 carried by the type bar. The slot has a downward extension 22 to facilitate asseml'iling and dismounting the parts. The type bar also has a shoulder 23 which is brought adjacent the pin 24 carried by the sub lever when the parts are in the printing position of Fig. 3. Y

When a key lever isdepressed it rocks its sub lever forward about its pivot 1G and by' its engagement with the pin 19 starts the type bar toward the printing position. As the type bar rises, the pin 21 swings downward and forward and is engaged by the shoulder 20 which forces the type bar to the printing position. Vhen the key lever is released it is raised and the sub lever is rocked to the rear. The pin 24 pushing against the shoulder 23 throws the type bar forward quickly so as `to avoid conliicting with the other type bars.

That I claim is 1. In a typewriter action, a hinged type bar having a downward projection to be engaged by a sub lever edge at the beginning 'of the printing stroke, a sub lever for engagement therewith, said type bar vand said sub lever having a pin and'slot connection- 'the stroke and a pin and shoulder engagement at the end of the printing stroke to facilitate the return of the type bar.

2. In a typewriter action, a hinged type bar having a pin below and at some distance from its` pivot and a second pin below and in rear of its pivot when the type bar is in the normal position of rest anda sub lever normally engaging the vfirst pin and having an elongated slot with al-shoulder at the front end thereof for engagement with the second pin in the normal position of rest and a shoulder at the rear end. thereof for coacting with the second pin during the intermediate part of the printing stroke, said 'sub lever and said type bar having other vparte whichl coaet at 4the printing position.

`Each sub lever has a slot in its upper end ma y y 3. ln a typewi'ite aetionstliinged type nur having' :i pin and :i shoulder, a hinged sub lever having its front edge normally engaging said `pin and carrying a pin adaptedpin and having@ Qin, adapted to ybe engaged bj? said 'eheiilderi- :ittlie printingr position. '5., in n typeWi-iteiaetion, a hinged type bai', and e, hinged. sub leve` engaging direetly with the type bei' and having three pointe e' connection with seid type bei' op- Lumi-ie erating at thebeginning the intermediate part and the Vend of the stroke.

6. In a typewriter action, a hinged type liar having. two pins at different distenees from the pivot' of the vtype bar and a, shoulder at. an intermediate distance from the pivot of said type bar and a. hinged sub lever having shoulders for engaging said pins and a pin for engagement with the Shoulder of @Myne bap.1.

JESSE ALEXANDER.

Witnesses: 'I l HERBERT W. 131mm, v' E. C. DUFF.

@enten ne ammi-ined Een? nwe cents each, ny addressing the Gommasionei' of Faltante.

' v Wnmng'gton. C."

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