US955942A

US955942A - Type-writing machine.

Info

Publication number: US955942A
Application number: US42301308A
Authority: US
Inventors: Arthur J Briggs; Hannibal C Ford
Original assignee: SMITH PREMIER TYPEWRITER Co
Current assignee: SMITH PREMIER TYPEWRITER Co
Priority date: 1908-03-24
Filing date: 1908-03-24
Publication date: 1910-04-26
Anticipated expiration: 1927-04-26

Description

A. J. BRIGGS & H. 0. FORD.

TYPE WRITING MACHINE. APPLICATION FILED MAR. 24, 908.

Patented Apr. 26, 1910.

A TTORNLY.

UNITED STATES PATENT, OFFICE.

' ARTHUR J. BRIGGS AND I-IANNIBAL 0. FORD. OF SYRACUSE, NEW YdRK, ASSIGNORS TO I THE SMITH PREMIER TYPEWRITER COMPANY, OF SYRACUSE, YORK, A COR- mechanism.

PORATION OF NEW YORK.

TYPE-WRITING MACHINE.

' Speeiflcation of Letters Patent. Patented Apr. 26, 1910.

Application filed March 24, 1908. Serial No. 423,013.

To all whom it may concern:

Be it known that we, ARTHUR J. Bmcos and HANNIBAL C. FORD, citizens of the United States, and residents of Syracuse, in

' the county of Onondaga and Stateof New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

Our invention relates to typewriting machines and more particularly to paper feed Our invention has foi' its.principal object to provide an improved adjustable device for advancing thepaper, when it is first inserted into the machine, with accuracy and rapidity to position for writing the first line on the sheet.

The device is also useful wherever it is desired to feedt he paper a considerable distance as froinone printing position to another or to feed the paper out of the machine when the writing is complete.

To the above and other ends which will hereinafter appear, our invention consists in certain features of construction and com-- pawl and some of the connected parts. Fig.

6 is an endview showing the parts in operated position. Fig. T ls a-similar view but with parts removed and with other parts shown disconnected for the purpose of adjustment. v

WVe have" shown our invention applied to a Smith Premier typewriter but it will be evident that said invention is applicable or readily adaptable to various other styles of typewriting machines. The Smith Premier machine has a roller platen 1, to the right-hand end of which is secured a line space wheel 2, with which in the present instance. The platen has a shaft 3 on which it is rigidly mounted, and

.at each of its ends said shaft is provided with a finger wheel 4. The shaft 3 is journaled in a. platen frame which comprises two

frame rods

5 and 6 in front and rear, respectively,of theplaten and said frame rods are connected with end pieces 7, the right-hand one of which is shown in the drawings. Each of said end pieces 7 includes a forwardly directed arm to which the frame rod is connected, an u iwardly extended arm 8 (Fig. 3) and an arm 9 which curves backward and downward from the armS and has the frame rod 6 connected with its lower end. These end pieces and the

frame rods

5 and 6 are rigidly connected together to form a platen frame in which the platen shaft is journaled. A paper feed roller 10, diagrammatically shown in Fig. 1, is mounted on arms pivoted to the frame rod 6 and is pressed by spring means into contact with the platen.

Directly above the platen shaft 3 We form I the end piece of the platen frame with a boss wise motion of the shaft in one direction,.

andendwise motion of said shaft in the other direction is prevented by the head of a screw 15 which 1s threaded into the lefthand-end of the shaft. The segmental gear 18 is mounted on the reduced end of the shaft which is then riveted up as indicated in Fig. 3 to hold the gear sector in place. Said gear sector is formed with an extension 16 terminating. in a handle 17 whereby the gear sector is operated. A spring 18, coiled about the boss fll is connected at one end with a pin 19 on the sector 13 and at the other end with a pin 20 on the arm 8 of the platen frame, and said spring tends to move the arm lit toward the-back of the machine. The 'gear segment 13 meshes with a pinion 22 which is loosely niountcd on the platen shaft 3. Said pinion has an elongated hub or sleeve 23, the right-hand end of which is reduced-to form a shoulder and on said reduced end of said sleeve there is rigidly chine.

., sleeve 23 between the plate 33 and the teeth stud projecting toward the mounted an arm 24 having a pawl 25 pivoted ther :to on a pivot screw 26. As shown in Fig. 7 this arm 24 has small lugs 27 projecting into slots or notches in the sleeve 23 in order to insure that the arm have no rotary motion except with the'sleeve. The pawl 25 is adapted to engage and operate a ratchet wheel 28 rigidly secured to the shaft 3 by a set screw 29 threaded through the hub of said ratchet wheel. InFig. 7 the finger wheel 4 and theratchet Wheel 28 are removed in order better to show the construc-. tion of the parts-to the left thereof.

Fig. 4 is a section through the pawl 25 on a vertical plane extending fore and aft of the'machine, and through this pawl transversely of the ma.- As shown in these enlarged .views, provided with a spring 30 which cavities forn'ied in the adjacent faces of the pawl 25 and the arm 24 and coiled about the pivot screw 25, the spring being connected at one end with the pawl and at the other end with the arm. shown in Fig. 5 the screw 26 is a shouldered and headed pivot screw, the reduced end of which is threaded into the arm 24. The spring 30 tends to press the pawl 25 intoengagement with .the ratchet wheel28. The pawl is formed with a tail piece 31 which normally engages an adjustable stop.and throwout device 32, consisting of a pin or right from an adjustable device or plate 33 which is loosely the pawl is is seated n1 mounted on the sleeve 23 inside the arm 24:. Another plate 341s loosely mounted on said of the pinion 22 and this plate 34 is prevented into the end of the shaft- 12 of ed fromturning about the platen axisby a shouldered screw 35 which passes through a suitable hole in the plate 3-1- and isthreadthe gear 35 passes loosely the construction is such that'said plate does not interfere with the rotation either of the shaft 12 or of the pinion 22, but the .plate itself cannot turn. A retaining dog 36 is pivoted to theplatc 3+ on a shouldercdstud 3 7.whic'h is riveted to segment 13. The screw the plate 34 asshown in Fig. 3, and the point of this dog engages aseries of ratchet teeth 38 in the adjustable plate 33 to retain said adjustable plate in any position to which it may be adjusted. The dog 36 is formed with an upwardly extending tail 40 which normally rests against head of the screw .35 to limit the motion of the dog, as shown in Fig. 6. A U-shirpedplate spring '41 is secured to this arm 40'by rivets '42 and the rear branch of this plate spring is normally snapped in behind the screw head 35 so as to prevent motion of the dog in either direction, but this detent-may be sprung outwardso as to allow the dog to be moved to the position shown m Fig. '7

Fig. 5 1s a section where said dog is out of engagement with the ratchet teeth 38. lVhen the parts are in this position the plate 33 may be turned aboutthe sleeve 23 to any one of a large number of diiterent positions, and it may be retained in any adjusted position by throwing the dog 36 back into engagement with the ratchet teeth, the detent 4.1 snapping in behind the screw head The ratchet wheel 28 is formed with the same number of ratchet teethas the line space wheel 2 and the ratchet teeth 38 on the plate 33 are spaced to correspond with those on the ratchet wheel 28 and said line space wheel.

The parts normally stand in the position shown in Fig. l, the arm 16 being held up as far as it will go by the spring 18. The motion of the arm in this direction is limited by the stop 32 which arrests the pawl. 25 and throws it out of engagement with the ratchet wheel 28 so that said pawl is nor mally out of engagement with the wheel, and does not interfere with the rotation of the platen in either direction. If the handle 17 be pulled forward and downward, the pinion 22 will be rotated toward the back of the machine, carrying the arm 24; and pawl 25 around in unison with the pinion. As soon as the tail 31 of the pawl moves the side of the engagementwith the ratchet 28 and carries said ratchet and the platen shaft and platen around in line space direction. This motion may continue. until the pawl 25 strikes the head of the pivot stud 37 which is elongated as shown in Fig. 3 to form a stop for this pawl. The engagement of the pawl with this stop 37 jams the pawl into the escapemen't wheel and thus prevents overthrow of the platen and positivel) arrests the pawl, the handle 17 and the platen. 'lVhen the handle is released the parts are restored to the position shown in Fig. l by the spring 18, the pawl 25 snapping idly over the ratchet-teeth until said pawl is lifted out of engagement with said teeth by its tail 31 engaging the stop 32. the platen may thus be rotated for a considerable distance by a single motion of the handle l7 and that said rotation is in -line spacedirection and that the extent of this rotation of the platen is exactly predetermined by the mechanism.

The extent of rotation imparted to the platen by the handle 17 may be regulated by adjusting the plate 33 in the manner which has been described. For example, this plate is shown in ditlercnt adjustments in Figs. 1 and 7. When the plate is adjusted as shown in Fig. 7 the extent of rotation is obviously greater than when it is adjusted as shown in Fig. 1. As the spacing of the ratchet teeth 33 corresponds to that of the teeth of the line space wheel 2, the device may be set to turn the platen through a disaway from the vslop said pawl snaps into- It will be seen that tance corresponding to any desired number of teeth of the line space 'wheel within the capacity of the device. The mechanism can if desired be set to feed the paper only a distance of one or two or three teeth of the line space wheel, so that said device is capable of use for ordinary line spacing.

This device is very useful in many relations, as, for example, where the machine is used for writing letters on letter-head paper. A sheet of such paper may be placed in position to be fed into the machine with its lead ing edge arrested by the feed roller 10, and the handle 17 may then be depressed with the result that the first writing line on the sheet of paper will be brought to the print-.

ing position at a single stroke and wlthout care or especial attention on the part of the operator. The device is adjustable for dlfterent depthsof letterhead by adj ustin the plate 33. The device is also usefiil where the machine is employed in making out hills which have a uniformdepth of letter-head. The device is also obviously useful in any sort of work where it is desired to impart a considerable extent of forward :motion to the platen and to predetermine exactl the extent of such motion. When a letter has been written the paper may be fed out of the machine by either a single stroke of the handle 17 or, if necessary, by a quick succession of strokes of said handle, and the paper would thus be fed out of the machine much 'more quickly and easily than by ma-' ni ulating the linger wheel 4.

' /arious changes may be made in the details of construction and arrangements with-, out departing from our invention.

What we claim as new and desire to secure by Letters Patent is 1. In a typewriting machine, the combination of a rotary platen, a pinion normally disconnected from the platen, a hand operated rack meshing with said pinion, and means for connecting the platen with the pinion tocause the pinion to rotate the platen when the rack is operated.

2.111 a typewriting machine, the combination. of a rotary platen, a pinion normally disconnected from the platen, a hand oper ated rack meshing with said pinion, means for connectin the platen-with the pinion to cause the platen to rotate with 'the pinion when the rack is operated, means for automatically returning said rack to normal position, and means for disconnecting said pinion from said shaft when said rack rcturns to normal position, so as to leave said shaft free to turn in either direction.

3. In a typewriting machine, thecombination of a rotary platen, a pinion normally disconnected from the platen, a hand operated rack meshing with said pinion, means for connecting the platen with the pinipn to cause the platen to be rotated by the pinion when the rack is operated, and means for limiting the extent of motion of said rack and pinion. I

4:. In a typewriting machine, the combination of a rotary platen, a pinion normally disconnected from the platen, a hand operated rack meshing with said pinion, means for connecting the platen with the pinion to cause the platen to be rotated by the pinion when the rack is operated, and two motion of said rack and pinion in both directions.

5. In a typewriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, a hand operated rack meshing with said pinion, and means for automatically connecting the laten shaft with the pinion to cause the p aten 'to be rotated by the pinion when the rack is operated.

6. In a typewriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, a hand operated rack meshing with said pinion, a toothed wheel fixed on the platen shaft, and means for operatively connecting the said pinion with said toothed wheel when the rack is operated.

7. In a typewriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, a hand operated rack meshing with said pinion, a toothed wheel fixed on the platen shaft, a pawl connected with said pinion, and means for moving said pawl into engagement with said toothed wheel when said rack is operated and for disconnecting said pawl from said toothed wheel at the end of the operation of said rack.

8. In a typcwriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, a hand operated rack meshing with. said pinion, a toothed wheel fixed on the shaft, a pawl connected with said pinion and spring pressed into engagement with said toothed wheel, and an arresting and disconnecting device for arresting said pinion at the end of its motion in one direction and disconnecting said 'pawl from said toothed wheel.

9i In a typcwriting machine, the combination of a rotary platen, a pinion loose on ,the

relativelyadjustable stops for arresting the platen shaft, a rack engaging said pinion,

ahandlc for moving said rack in one direction, a spring for returning said rack, and means for causing said pnnon to turn said platen when the rack is operated by said handle.

10. In a typcwriting machine, the combination of a rotar laten a inion loose on u the platen shaft, a rack engaging said pinion, a handle for moving said rack in one direction, a spring for returning said rack means for causingsaid pinion to turn said platen when the rack is operated by said handle, and means for freeing said platen a toothed wheel fixed on a ed b said retainino' E b y M adjustable member, and

from said pinion when said handle is restored to normal position to leave said platen free to be turned in either direction independently of said pinion.

11. In a typewriting machine, the combination of a rotary platen, a platen frame, a pinion loose on the platen shaft, a segmental rack journaled on the platen frame and meshing with said pinion, a hand opera-ted arm on said rack, a toothed wheel fixed to the platen shaft, a pawl connected with said pinion, and a stop adjustable about said platen shaft for arresting the pawl and disconnecting it from said toothed wheel.

12. In a typewriting machine, the combination of a' rotary platen, a toothed wheel fixed on the platen shaft, a pinion loose on the platen shaft, a pawl connected with said pinion and adapted to engage said toothed wheel, a stationary device loosely mounted on one end of the hub of said pinion and carrying a retaining device, an adjustable member loosely mounted on the hub of said pinion and having teeth adapted to be en device, a stop and disconnecting device for said pawl on said means for rotating said pinion.

13. In. a typewriting machine, the combination of a rotary platen, a platen frame, the platen shaft, a pinion loose on the platen shaft, a pawl connected with said pinion and adapted to engage said toothed wheel, a gear journaled in the platen frame and meshing with said pinion, a stationary part loosely mounted on the hub of said pinion and on the axis of said gear, a retaining device mounted on said stationary part, an adjustable stop and disconnecting device for said pawl loosely mounted on the hub of said pinion and having teeth adapted to be engaged by said retaining device, and means for rotating said gear.-

14. In a typewriting machine, the combination of a rotary platen, a platen frame, a toothed wheel fixed on the platen shaft,

. a pinion: loose on the platen shaft, a pawl connected withsaid pinion and adapted to engage said toothed wheel, a gear ournaled in the'platen frame and meshing with said pinion, a stationary part loosely mounted on the hub of said pinion and on the axis of said gear, a retaining device mounted on said stationary part, an adjustable stop and disconnecting device for said pawl loosely mounted on the hub of said pinion and having teeth adapted to be engaged by said retaining device, a stop for said pawl carried by said stationary part, and means for rotating said gear.

15. Ina typewriting machine, the combination of a rotary platen, a platen ff'hme, a toothed wheel fixed on the platen shaft, a pinion loose on the platen shaft, apawl connected with said pinion and adapted to engage said toothed wheel, a gear journaled in the platen frame and meshing with said pinion, a stationary part loosely mounted on the hub of said pinion and on the axis of said gear, a retaining dog pivoted on said stationary part, a latch for holding said dog in operative position, an adjustable stop and disconnecting device for said pawl loosely mounted on the hub of said pinion and having teeth adapted to be engaged by said retaining dog, and means for rotating said gear.

16. In a typewriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, means for rotating said pinion, means for connecting said platen with said pinion to cause the platen to be rotated by the pinion, and means comprising two cooperating stops for arresting such rotation of the platen.

17. In a typewriting machine, the combination of a rotary platen, a pinion loose on the platen shaft, a hand operated, rack meshing with said pinion, means for connecting said platen with said pinion to cause the platen to be rotated by the pinion when the rack is operated, and means comprising two cooperating stops for arresting such rotation of the platen.

Signed at Syracuse, in the county of Onondaga, and State of New York, this 20th day of March A. I); 1908.

AIt'lIlUR- J. BRIGGS. HANNIBAL C. FORD. Wit nesses It. M. S'romis, I). L. SNYDER.