US1202878A - Power-driven type-writer. - Google Patents

Description

H. W. MORLEY.

POWER DRIVEN TYPE WRITER. APPLICATION FILED SEPT. 2B. I9I4.

NORA/EVS H. W. IVIORLEY. Pwe DmvEN TYPE WRITER. APPLICATION FILED SEPT. 28. 1914.

Patented Oct. 31,1916. l

` Hens H ET ll O ld I y I 'entre snare raar HARVEY WARREN IVIORLEY, OF ANGOLA, INDIANA, ASSIGNOR 0F ONE-HALF TO WILLIAM H. WALLER, OF ANGOLA, INDIANA.

PDWlER-DBVEN TYPE-WRITER.

To all whom t may concern:

Be it known that l, HAnvrY lV. llflonnnr, a citizen of the United States, and a resident of Angola, in the county of Steuben and State of Indiana, have invented a new and useful lmprovement in Power-Driven Type- Writers, of which the following is a specification.

My invention relates to a power-driven typewriter and it consists in the constructions, combinations and arrangements herein described and claimed.

An object of my invention is to provide a device of the type mentioned in which the operation of one of the keys of the typewriter results in the throwing of the typel ar`against the platen by power means, while at the same time all of the other keys on the keyboard are locked, and are therefore prevented from interfering with the key which is being operated.

A. further object of my invention is to provide power means for automatically causing the return of the carriage to its initial position. y

A further object of my invention is to provide means for locking all of the keys While the carriage is being returned to its normal position.

Other objects and advantages -will appear in the following specification and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings, fdrming a part of this application, in which similar reference characters indicate like parts, in which,

Figure 1 is a sectional View through the typewriter along the line 1-1 of Fig. 2, and Fig. Q is a sectional View along the line 2-2 of Fig. 1.

Referring now to the drawings, particularly to Fig. 2, 1 indicates the base portion of the frame of the typewriter. rllhis is provided with a pivot bar 2 upon which key levers 3 are mounted. These bars are bent upwardly and are provided with keys 4. Each key lever is provided with a link 5 near its rear end arranged to engage a spring 6 which is fulcrumed at 7 and whose rear end is arranged to be moved by means of an adjusting screw 8 for regulating the touch Referring now to Fig. 1 it will be seen that l have provided a shaft 9 which is mounted Specification of Letters Patent.

Fatented @11net. 31, 1916..

Application filed September 28, 1914. Serial No. 863,863.

partly in bearings 10 in the side portion 11 of the typewriter frame and partly in bearings 12 at the end of a laterally extending bracket 13. Secured to the shaft 9 by means of a taper pin 14 is a circular plate 15. rllhis plate has an arm 16 to which is pivotally secured a. rod 17 having at its end a friction shoe 18. The latter is held normally against the mner surface of a drive wheel or pullev 19 by means of springs 20. The drive wheel 19 is loosely mounted on the shaft 9 and is driven by means of a belt 21. It is provided with an annular retaining plate Q9. which extends over the outer edge of the plate 15 so as to hold the drive pulley in place.

Adjacent to the. drive pulley is a drum Q3 which is provided with a cable 24, this cable being attached to the carriage, not shown. T he drum Q3 is loosely mounted 4on the shaft 9 so that it may be made to revolve and to move longitudinally thereon. rl`he hub of the pulley 19 bears a pivoted arm 25 to which is pivotally connected a shoe 2G, thelatter being arranged to bear on the inner surface ofl the drum when the latter is forced toward the pulley. drum toward the pulley 19 I provide a groove 27 in the hub of the drum into which a yoke 1% lits, this yoke being` pivoted at '29 on the bracket 13 and being connected bv means of a link 30 with a bell-crank-lever 3l which is in turn connected by a link 32 with an arm 33 carried by a bar 34 bearing a cai'- riage return key 35.

An escapement wheel 36 is rigidly secured to the shaft 9 and is controlled by an escapement dog 37 which is pivoted at 38 and which is connected by means of a link 39 with a universal bar 40 extending underneath the key bars. The shaft 9 bears a type-bar-driver 41 which is formed in the manner best shown in Fig. 2. This type-bardriver is arranged to engage a drag link 42 which is pivotally connected at 43 with a type bar 44, the latter being pivotally mounted on the curved rod 45. A. portion only of the curved rod 45 is shown in the drawings, but it will be understood that the type-bars are so mounted on the rods as to strike at a common printing point, as is ordinary in devices of this type. The drag link is held normally disengaged from the type-bar-driver 41 by means of a spring 4G.

ln order to move the At 47 I have shown a-cam lever which is pivotally mounted at 48 and which is connected by means of a link 49 with a. turnbuckle 50, the latter being in turn connected with the key bar such as that shown at 3 by thelink 5l. Rigidly secured' to a shaft 52 areA locking members 53, there being one of these locking members for each key lever. These locking members are in `the form of bell-erank-levers. One end of the bell-cranklever surrounds the link 5l so that when the latter is moved downwardly the turnbuckle 50 will engage the locking member and will thereby cause the turning of the rock-shaft containing the locking members. ilaeh locking member 53 is provided with a hook 54 arranged to engage a hook 55 on the key lever, as will be explained later. spring 56 keeps the locking members normally disengaged from their respective key levers.

F rom the foregoing description of the various parts of the device, the operation thereof will be readily understood.

The power pulley l5) is arranged to be driven by any suitable means as by a belt 21 and is in continuous rotation. Now when a key such as that shown at l in Fig. 2 is depressed against the tension of the spring 6, the hook 55 carried by the bar will pass below the hook 5t thereby preventing the locking of the particular key which is be-v ing depressed. The downward movement of the link 49 will cause the cam lever li" to force the drag link l2 upwardly into the path of the typebar-driver. A further downward movement of the key lever 3 will cause the operation of the eseapement mechanism through the medium of the universal bar 40, the link 39 and the dog 3T. It will be understood that the friction shoe 18 (Fig. l) now having nothing to oppose it. will cause the revolution of the plate 15 and hence of the shaft 9. The dog 37 is so arranged as to permit a quarter of a revolution. The type-bardriver 4l now pulls the drag link 42 into the position shown in dotted lines in Fig. 2, thereby causing the movement of the type bar 44 toward the platen 57. Just before the type bar strikes the platen` the type-bar-driver has revolved far enough to free it from the drag link 4Q. the remainder of the stroke being accomplished by the momentum of the type bar. The spring 4:6 now returns the type bar and the drag link to their original positions.

The depression of any key, as stated above, will prevent its being locked since the hook moves down below the hook 54 before the locking member 53 is actuated for that particular key, but all of the other keys are locked owing to Kthe rotation of the roekshaft through the actuation of any one lock ing member on the shaft. Thus it is impossible to operate more than one key at a time. Upon the release of the key it is returned to normal position by means ofthe spring (l. The spring 56 also restores the locking dogs to their original positions.

lVhen it is desired to return the carriage. at the end of a line, the carriage return key 35 is depressed. This pulls downwardly on the link 82 which forces the yoke '.28 outwardly through the medium of the bellcrank lever 3l and the link 30. The drum 23- being moved toward the drive pulley lf). pressure is exerted by the shoe 26 upon the interior of the drum.

Since the pulley 19 is revolving continuously this will cause the revolution of the drum 23, thereby winding up the cable 2l and pullingthe carriage back to the starting place. It will be noted that there is a spring 57 between the pulley 19 and the pivoted arm Q5 which bears the shoe 2V. This spring is of such tension as to keep the shoe in frietional engagement with the drum 23 so as to keep the cable it taut. while not interfering with the nmvemeut of the carriage when the type keys are. being used. It will also be observed that when the carriage key 35 is depressed ilv causes the downward movement of the locking bell-crank levers so that all the type bars are locked. thus obviating the possibility of using a type key when the. carriage is returned to place. On the release of the carriage return key the type keys are uuloeked in the manner heretofore described.

l claim:

l. in a power driven typewriter, a, rotatable shaft, a drive pulley loosely mounted on the shaft, a spring actuated clutch member normally in engagement with said pule ley, means for normally preventing the rotation of the shaft, and means for shifting said last named means to permit a partial rotation of the shaft.

2. In a power driven typewriter, a rotatable shaft, a drive pulley loosely mounted on the shaft, a spring actuated clutch member normally in engagement with said pulley, means for normally preventing the rotation of the shaft, means for shifting said last named means to permit a partial rotation of the shaft, said last named means comprising an escapement wheel carried by said shaft. and a pivoted escapement arranged to cooperate with said wheel, said pivoted escapement being operable by any of the keys of the. typewriter.

3. In a power driven typewriter. a shaft, a` rotary type har driver mounted thereon, a pulley loosely mounted on said shaft, a clutch for transmitting the movement of the pulley to the shaft, an escapement mechauism for normally preventing the rotation of the shaft, a plurality of keys. connections between any one of said keys and said escapement mechanism for operating the latter to permit the rotation of the shaft, anl

neoaeve pulley to the shaftyan escapement mechaf nism for normally preventing the rotation of the shaft, a plurality of keys, connections be tween any one of said keys and said escapement mechanism for operating the latter to permit the rotation of the shaft, means adapted to be engaged by the rotary'type bar driver for operating the type bars, and means for locking the'remainder of the keys during the operation of one type bar..

5, lin a power driven typewriter, a rotatable shaft, a drive pulley loosely mounted on the shaft, a spring aetuated clutch member normally in engagement with said pulley, means for normally preventing the rotation of the shaft, and means for shifting said last named means to permit a partial rotation of the shaft.

6. ln a power driven typewriter, a shait,-a rotary type bar driver mounted thereon, means operated by the depression of 'any one of the type keys for communicating the motion of the type bar driver to the type bar, thereby operating the latter, said last named means comprising a link associated with each type key, a hook carried by each type key lever, an individual locking lever for each key lever" normally out of engagement with its individual hook, and means carried by said link for engaging the locking lever to rotate the latter, and a common rotatable rod for all of said locking levers.

7. ylin a power driven typewriter, a rotatable shaft, a type bar driver carried thereby, a series of key levers, means connected with each key lever for setting in operation the type bar driver, means associated with each key lever for communicating the movement of the type bar driver to one of the type bars, said means comprising a link, a hook carried by each of said key levers on the upper side thereof, a bell lcrank lever having a hook at one end arranged nto engage said irst named hook, a common pivot rod for each of said vbell crank levers, one end of each of said bell crank levers being in oper ative connection with its associated link whereby when anyone of the links is operatedf'motion is `transmitted to all of the bell crank levers through said common pivot rod.

HARVEY WARREN MORLEY.

Witnesses;

EDGAR C. STAFFORD, Meer T. Rrfrnn.

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