US1058678A

US1058678A - Type-writing machine.

Info

Publication number: US1058678A
Application number: US59153910A
Authority: US
Inventors: Frank C Ursbruck
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1910-11-10
Filing date: 1910-11-10
Publication date: 1913-04-08
Anticipated expiration: 1930-04-08

Description

F. O. URSBRUCK. TYPE WRITING MACHINE. APPLICATION FILED NOV. 10, 1910.

1,058,678. v Patented Apr. 8, 1913. F.

2 SHEETS-SHEET 1.

P. 0. URSBRUGK.

TYPE WRITING MACHINE. Arrmonron rum xov. 10.1910.

Patented Apr. 8, 1913.

2 s'nnMHmnm: 2.

x STATES PATENT OFFICE;

rmx c. unsenucx, or NEW YORK, N. Y., assmnoa 'rol'vnnnnwoon' rvrriwarrnn communes 'NEW YORK, N."Y.., A' conromrIoN or DELAWARE.

I Tyre-WRITING ivmcrmtn.

This invention relates to devicesfor causing the ribbon to cover and uncover the printing point at each type stroke, in visible writing machines, and constitutes an im- 'provementon the device disclosed in the application for United StatesLetters Patent 4 15 of George E. Grifiin, filed, November 5, 1910,

a. Serial ho. 590,838. In saidapplication, the ribbon'is caused to cover thekprinting point prior to the impact of thetype,.where it is locked in position, during the completion of effect these results, the operating arm connected to the ribbon carrier has a wrist engaged by a cam on a lever operated at each 25 type stroke, to cause the ribbon to cover the printing point prior to the impact of the types.- I Further movement of the lever brings a dwell portion on said cam into engagement with the wrist on the moving operating arm, to lock orhold" the ribbon in operative position.

According to the present improvements, in place of using a separate universal bar for vibrating the ribbon, I- utilize, for this purpose, the same universal bar that commonly operates the carriagerfeeding dogs in the t-ypewriting machine; and I compensate for the usual short stroke of said universal bar (which is insufiicientto make it practicable to get the required extent of movement of- -the cam-actuated ribbon-vibrating wrist) by introducing a movement-multiplying lever, which is itself operated'bysaid universal bar and carries the ribbon-vibrating wrist at such a point that "an extensive movement of the wristaccompanies the'vibration of the lever. This movement is suflicient to enable the wrist to traverse the rather long cam, including the locking extension, at each stroke 0f the universal bar. A variable throw of the ribbon carrier, to enable either of two ribbon fields to be employed, is secured by forming a pair of dissnnilar cams on a ribbon-vibrating arm, said cams respectively engaged by opposed wrists carried on or driven by the movement-multiplying lever,

' Specification 01 Letters ratent.

the printing stroke of the type bar. To-

gagement with either cam.

- Another feature of the inventionis a prov sion whereby the ribbon-vibrating mecha' nlsm is made vertically movable bodily, to sh ft with the platen, the ribbon mechanism being for this purpose mounted upon a supv Patented Apr. 8,1913: Application filed November 1o',191o. SerialNo..591,538.

which for this purpose is shiftable into en portwhich moves with the shifting rail v upon which theplatn-frame. usually runs. Furthermore, the entire ribbon-vibrating mechanism canv be readily l assembled as a unit and applied to or removed from the machine. f

' In the accompanying drawings,-Figure 1 is a side view, showmg one form of the invention applied to an Underwood writing machine, the mechanism being'at rest. Fig. 215 an enlarged detail side view, part1 broken away, of the ribbon-vibrating mecha-v nisrn in upper case position. Fig. 3 is a detail 'side view, showing the mechanism in operation, to cause the upper ribbon field to cover. the printing point. Fig. 4 is a front view, partly in section, of the ribbon shifting mechanism. Fig. '5 is a perspective of the invention removed from the-machine. Fig;

6 is a view similar to Fig. 3-showing the positions of the parts at the engagement of the type bar and universal bar, to vibrate the lower ribbon fieldto cover the printing point. Fig. 7 shows said ribbon field co vering the printing point.

Lower and upper case ried by type bars 2 ivoted at 3 strike-a laten 4 on a platen rame 5. Saidframe types} and 1 car- 18 mounted in a carriage 6 on the front and I rear rails 7 and Sof a framework 9. A i roll 10 on the platen frame runs on a rail 11 -for1nin part of the usual platen-shifting mechan ism 12. Depressing a shift .key 13 rocks a lever 14, having an arm 15 to swing the platen shifting mechanism 12 on its pivot -16, thereby. lifting the rail ll'and platen 4 to enable the upper case types 1 to print. A ribbon carrier 22, having a ribbon 23 threaded therein, is sup orted by a ribbon-vibrating arm 21 pivo't at 40 and. normally engaging a rest 49. As the types approach the platen, heels 17 on the bars 2 press backwardly a universal bar 18 to trip the usual carriage'feeding mechanism 18*.

bar is usually rely short, and in ordento enable it to control the ribbon in the desired manner, I provide a movement-limiti- 18" (Fig.7). The throw of said universal y noes-p78 place prior to the impact of thetypes.

6. In a typewriting machine, the combina- *tion with a platen, a shiitable platen support, a ribbon carrier, a universal bar, and

type-bars to operate the universal bar, of

a slide connected to the support, guides for the'slid'e,'and ribbon vibrating mechanism mounted onthe' slide and connected to the ribbon carrier and the universal bar respectively; s I

7. In a typeWrit-ing machine, the combination with a platen, a shift-able platen support, a ribbon carrier, a universal bar, and

type-bars to operate the universalbar, of

a slide connected to the support, guides for the slide, a ribboi'i-vibrating arm pivoted at, one end to the slide, the opposite end being connected to the carrier, and a movement-- multiplying' lever engaging the arm inter-- mediate its ends to transmit motion from'.

the universal bar thereto.

8. In a typewriting machine, the 'combina tion with a platen, a shiftable' platen support, a ribbon carrier, a universal bar,"and

type-bars to operate the universal bar, of a slide connected to the support, a ribbon-vi'- brating arm mounted on the slide and connected to the ribbon carrier,'a cam on said arm, and a movement-multiplying lever swung by the "universal bar and engaging the cam to vibrate the ribbon, g

9. In a typewriting machine, the combination with a ribbon carrier, a universal bar,

and typebars to vibrate said universal bar,

of a ribbon-'vibrating arm connected to the carrier and having a pair of dissimilar cams,

a movement-multiplying lever operated by the universal bar, means to shift the lever to engage either cam to cause differentribbon fields to cover the printing point,'. prior to the impact of the types, and dwell portions on said cams to maintain the selected ribbon field in printing posit-ion.

. '10. In a typewriting machine, the combination vvitharibbon carrier, a universal. bar,

and type-bars foyibrate said universal bar, of a ribbon-vibrating arm connected to the carrier and having-a branch, a pair of dissimilar cams on. the arm andbranch respectively, a movement-multiplying lever between the cams, said lever connected to the universal bar, and shifting mechanism to effect the engagement of the lever with either cam.

11. in a typewriting machine, the combitype-bars to vibrate the universal bar, a platen, and a shiftable platen support, of a slideconnected to the platen support, a ribbon-vibrating arm pivoted to the vslide and connected to the carrier,; saidarm hav-- ing dissimilar cams, a rod shiftably mountverjournaled on the rod, and connected to the universal bar, and a fingerpiece linked to the rod to cause the enga ement of the lever with either cam to en, la the ribbon and itsvibrating mechanism" to shitt with the-platen.

nation with a platen, a shiftable platen support, type-bars, a ribbon-carrier, and a universal bar vibrated-by the type bars, of a connected to -jthe ribbon carrier, a cam on the arm, a movement-multiplying lever on and another wrist on tothe universal bar, v13, Ina typewri' nation with atyp'e bar, ends universal bar struclebyiaid type bahafter'it has acquired brator, a lever pivoted the frame and arranged to move said vibrator, and an "actuator operated by said universal bar for 'drivin said lever intermediate said pivot and said vibrator.

14. In a typewriting) bination with: a type arand a universal bar struck-bysaid type bar after it has ing a cotiperating pin, an actuator on the able laten, a fixed guide, a frame in which said evers are pivoted, and meansfor movplaten.

15. In a -typewritin .binat'ion with a type is!" and Ya universal bar struck by said type bar afterit-has brator, dissimilar cams. on said. lever, memca-ms vibrated by said universal bar, means for movin said surfaces to cause one to engage wit v platen, a frame movingsw-ith the platen in said frame for said ever. I

16. In a t 'pewriting machine, the combination wit a type bar and a universal acquired momentum in its swin of a rib bon vibrator, an actuator on sai universal ed in the slide, a movenienbmultiplyixig le-- 12. In a typewriting machine, the combislide, a link conneeti the slide to the platen support, guides or the slide, a rib-. bun-vibrating arm pivoted to the slide and 131g machine, the conibij/momentum in its swing, of a ribbon vi machine, the com acquired momentum in its swing, ofarib; bon'vibrator, a lever having acam surface. tomove sald-vlbrator, a second lever hav i ing said .frame on saidfguide with, said machine, the; com

acquired momentumin its swing, of a ribbon vibrator, a lever for vlbratmg said v1- a bers having surfaces to coiipefateiwithsaid L 120 which said lever is ivoted, and a. rest on I 185 nation with a ribbon carrier, a universal bar,

all

the slide havinga' wrist. to engage the cam,

thelever pgnn'ect'ed universal bar for said second lever, a shift-n one of said cams, a shiftable bar struck by said type bar after it has;

bar, a lever pivoted to said vibrator, a sec- 0nd lever connected engaging said slide,

0nd lever'to swing said first lever, a driver for said second lever riding in a slot in said actuator, which said levers said shiftable platen.

17. In a typewriting machine, the combination with a type bar and a universal bar struck by said type bar after it has acquired momentum in its swing, of a rib bon vibrator lever, a multiplying lever, a cam on the vibrator lever engaged by the multiplying lever cover the printing point during part of the type stroke, and to positively hold the ribbon at said point during the latter part of said type stroke.

18.]In a typewriting machine, the combination with a type bar and a universal bar struck by said type barafter it has acquired momentum in its swing, of a ribbon vibrator, an actuator on said universal bar, a lever moved by said actuator, a secto said vibrator, a cam on said second lever, and a cooperating surface on said first lever to raise the ribbon on said vibrator to the printingpoint during part of the type stroke, and to holdit positively in said position during the latter part of the printing stroke.

19. In a typewriting machine, the combination with a universal bar, of an actuator on said universalbar, a shiftable platen, a slide in said actuator movable with the platen, and a ribbon vibrator constantly engagin said slide.

a typewriting machine, the combination with a universal bar of an actuator on said universal bar, 'a shiftable platen, a

slide in said actuator moving with the platen, a vibrator having a cam slot, and a cooperating member moved. by said slide as it works in said slot, and arran ed to positively vibrate said vibrator wit said universal bar and shift it with the shifting platen.

21. In a. typewriting machine, the combination with a universal bar,of an actuator on said universal bar, ator, a platen shift, a ribbon mechanism means for moving said mechanism with said shift, and, a guide for said mechanism as it moves with the shift.

22. In a typewriting machine. the comliination with a universal bar, of a. vibrat ing lever, a ribbon carrier moved by said lever, a cam on said lever.to.raise one field of said ribbon to the priiiFg point and positively hold it there, second cam on said lever having a surfaced throw another part of said ribbon to tliti piiinting point and positively hold it there, means for connecting either of said cams to theuni versal bar, and a rest for supporting said lever when free of each cam.

a shiftable platen, and a frame in are pivoted moving with to move the ribbon to a slide in' said actu- 23. In a typewriting machine, the combination with a platen, a shiftable support therefor to shift the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame, of a rectilinearly guided support on which said lever is fulcrumed, means connecting said platen support with the lever support to shift said lever rectilinearly when the platen is shifted, and an actuator for said lever fixed on said frame and vibrating rectilinearly with the frame.

24. In a typewriting machine the combination with a platen, a shiftable support therefor to shift the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame, ofmeans for guiding the fulcrum to said lever rectilinearly, a link depending from said platen support to shift said lever when the platen is shifted, and an actuator for said lever fast on,said frame vibrating rectilinearly with the frame.

25. In a typewriting machine, the combination with a platen. shiftablc support therefor to shift the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame, of a support for said lever, guides for said support to guide it rectilinearly, a link connecting said lever supportwith said platen support for shifting said lever rectilinearly when the platen is shifted, and an actuator on said frame.

26. In a typewriting machine, the combination.-with a platen, a shiftable support therefor to raise the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame. of a support for said lever, guides for said lever support to guide it vertically a link connecting said lever support to said p vertical y when the platen 1S raised, and an actuator on said frame.

27. In a tvpewriting machine, the combination with therefor to raise the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame, of a fulcrum for said lever'adapted to be guided vertically, a link depending from said platen support connecting therewith for-raising the lever vertically' when the platen is raised, and an actuator on said frame.

28. In a typewriting machine, the combination with a shiftable platen, a ribbon carrier, a lever to vibrate said carrier-and a universal bar frame, of a. support, a fulcrum for said lever mounted on said support adapted to be guided rectilinearly to shift said. lever rectilinearly when the platen is shifted, an arm on said lever support on which said lever rests when shifted for steadying the lever, and an actuator on said frame. 1

29; In a tvpewriting machine. the combination with a platen. a. shiflable support laten support for raising said lever a platen. a shiftable support therefor to shift the platen, a ribbon carrier, a lever to vibrate said carrier and a universal bar frame, of a support for said lever, guides for said-lever support to guide it rectilinearly, a link connecting said-lever support with said platen support for shifting said lever rectilinearly when the platen is shifted, an arm on said lever support on which said lever rests when shifted for steadying the lever, and an actuator on said frame.

30. In a typewriting machine, the combination with a shiftable platen, a ribbon carrier and printing means, of a vibrating lever for the carrier, means for shifting the lever rectilinearly when the platen is shifted, an actuator for said lever vibrated by said mechanism rectilinearly, means for disengaging said carrier from the actuator, and a rest on which the carrier is supported when disengaged.

31. In a typewriting machine, the combination with a platen, a shiftable support therefor to shift the platen, a ribbon carrier and printing means, of a vibrating lever for the carrier having its fulcrum arranged to be guided rectilinearly, a link depending from said platen support for shifting the lean arm on which one end of said lever may rest, a guide for the fulcrum'of said lever,

and means forshifting said arm and said fulcrum together on said guide with the shifting platen.

' FRANK C. URSBRUCK.

Witnesses:

K. FBANKron'r, C. Rumor.

Copies or this patent may be obtained to: ave cents each, by lddreuing the Commissioner 0! 2mm,