US872447A - Ribbon-shift for type-writers. - Google Patents

Description

PATENTED DEC# 3, 1907.

C. J. PAULSON. RIBBON SHIFT FOR TYPE WRITERS.

APPLIOATION FILED MAY 18, 1906.

2 SHEETS-SHEET 1.

Inventor.- Zar/e5 IPw/s on.

By his Attorney.

A Witnesses No. 872,447. PATENIED DB0. s, 19o?. o. I. PAULsoN.

RIBBON'SHIFT'POR TYPE WRITERS.v

` APPLICATION FILED MAY 1a, 190e.

2 SEEETSQSHEBT 2.

invento/1 Bybs Attorney CHARLES JPAULSON; OF BROOKLYN, NEW'YORK.

RIBBON-SHIFT FOR TYPE-WRITERS.'

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed May 18| 1906. Serial No. 317.540.

useful Improvements in Ribbon-Shift for .'TypeA-l/Vriters, of which the following is-a specification. -This invention relates to ribbon supporting mechanism for typewriters, and is particularly designed for use in connection with whatare termed sight typewritersf wherein the place on the platen that is being struck 4`by the typebars is plainly visible to the operator. In such machines it is customary toshiftthe ribbon at eac-h stroke of the typebar, over the printing place to be. engaged by the type, and thereupon the ribbon is immediately returned to its former position to enlaple't'he character printed to be plainly visi- The object 'of the present invention is to provide means for so shifting the ribbon vat each stroke from the universal bar or otherwise, and to further provide means whereby the position of the ribbon at such printing stroke may be varied, so that it may be engaged by the typebar at various positions transversely across its width ,l or it may even be shifted beyond such position when it is desired to operate without the ribbon, as when -forming a matrix lor minieograph work or the like.

An additional object of the invention is to provide means for varying the position to which the ribbon is shifted at each printing stroke, at the same time that the carriage or platen member is shifted to accommodatefor two or more type on each type bai; as is usually the construction to provide upper and lower case letters for each type bar, and also some times anadditional character on Vthe type bar.

,ln the accompanying drawings representing one embodiment of my invention, Figure typewriter' having my invention ap lied thereto. Fig. 2 is a )erspective view s owing certain portions oli the operating mecha isiii. Fig. 3 is a vertical section through certain parts shown in Fig. 2. Fig. 4 shows separately the flexible shalt `for controlling the shaft of the ribbon guide; and Figs. 5, and 7 show the cani portion ol the flexible shaft in its diil'erentoperative positions.

'lhe typewriter is designated generally by 1 is a side elevation of certain portions of a' on the supporting arm 14. A

guide.

T and the ribbon R is carried by suitable s ools S, only-one of which isshown. The p atenis indicated by P, and the ribbon is supported to be broughtad'acent the platen toA engage by the typebars when the latter are depressed in thc usual manner.

Mounted on suitable standards 11 and 12 is a supporting rod 13, on which is secured 'a su porting arm '14. Adjacent the rod 13 is a dbxible shaft 16 rotatably supported at one end only, in a bracket 17 fast on the standard 12. .This,flexiblcsliaft extends substantially arallel with the rod 13, and is rotatable iiom a shaft 18 by means of bevel gears19 and 20 on the respective members 5 shaft 18 bein(lr controlled by an indicating arm 21, that can e shifted to the three positions, such as red, black and plain, as indicated'on the front plate 22. V V

A lever 23 is pivoted at its intermediate part in the lower portion of the supporting arm 14, and has one-extremity secured to a collar 35 loose on the free end of the flexible shaft 16. The other projectingend of the lever 23 is connected with the universal bar 15 by a link 24. When the universal bar is depressed, the link will serve to rock the lever 23. A ribbon guide 25 is supported to' slide on an arni 28 extending transversely from the arm 14. This ribbon guide is moved in one direction by a lever 26 pivoted spring 27 is connected between the lever 26 and the guide 25. vWhen the lever is rocked to advance the guide, this s ring will be extended, by reason of the angu ar divergence of the lever and Therefore the reaction of this spring will return the guide and arm 26 to their for# mer positions. A second lever 29 is pivoted in an upright arm 9 and engages a portion of the lever 26 by its intermediate portion.A The lever 29 has its inclined end portion engaged by a cam surfaceBO on the leXible shaft 16, whereby the rotation of the shaft will rock the lever 29, as indicated in Figs. 5, 6 and 7.

The Hexible shaft 16 is retained in three different positions, corresponding to the indications on the plate 22, by means of a spring clip 31 fast on the shaft, that engages i'lat surfaces 32, 33 and 34, formed on a collar 35 fast to the lever 23.

Instead oi an arm 29 being pivoted on a l l stationary member, it may arm 9 that serves to shift the platen when it" be pivoted on an is desired to print another case letter formed on the typebar B. The varm Qfis sliown'in -Fig. 1 as pivoted 'at 7 and has a bent `arm 8 A operably connected with a 'key lever 6.v By

"any suitable means, not shown, the-operation of the key lever rocking the arm 9 will serve ortion, will shaft 16. The latter will elevate ythe lever- 29, that will swing the .lever 26 to advance the ribbon'jguide 25. But in this position, lthe ribbon guide will only b e advanced a minimum distance, and the ribbon will not be broughtto the rinting place of the ty e' bar B. Upon shi tingvthe arm.21 to yt 'e .b'la'ck position, the cam 30 will be swung to the position indicated in Fig. 6. From this it will be seen that in its normal ositionv the-lever 29 will be elevated from t eV ositin shown in full lines in Fig. 3 to lthat 1ndi-'.

cated in broken lines; andthe same follows for 'the lever 26, it remaining in the broken line position. Upon nowoperating the uni-y versal bar, ysincev `the-'lever 23swings .through the same length of arc asin the previous iiil i stance, the lever 26 'Willibe movedV throughl the. same distance, but thrbugh afdiiferent path, its initial position being advancedrom that` in the previous instance.A '-This will -cause .the ribbon vto be shifted farther across the'platen at each operationof theuniversal bar, and this will serve to bring the' portion.l

37 ofthe ribbon into the strikingpoint of the vtype bar,'.causing it lto print black. Upon shifting the indicator varm 21 to lthe`l osition' .of"red, the cam 30 will be shifte'A to the' position indicated in-Fig. 5 and the normal position of. the levers'29 and 26 willbe further elevated, and theribbon guide, upon the next operation of universal-bar will be shifted still' further. This will permit the red pordtion 3 6 of the ribbon tobe brou ht to the striking place of the type bar. he spring 3i` engaging the flat faces on theend portion 'of the flexible shaft 16 will serve to retain the shaft from rotating away from such axial position, yet will permit elevation of the shaft by thelever 23 at each operation of the universal bar. But, when the arm 9 is rocked to shift the platen for upper case, or other additional character carried by the type bar, 4the lever 29 will be moved rearward as indicated in Fig.l 2. This will cause its inclined end portion engagingthe cam 30, to be ele# vated bythe cam, and slightly rock the lever 26. The latter movement will obviously advance the ribbon guide 25. This operation will have the saine effect of advancing the ribbon guide in whichever of the three posid 2. AIn a typewriter, the v supporting member, aribbon guidearranged In a typewriter,

stat4? l ftions'the guide member is adjusted to "operate by imeans` of the controlling arm 21.

eration of the universal bar, it -willbe-shifte'd That is, to Whicheverv of the three positions' the ribbon guide would be shifted by theopat such operation a short distance, vandthereby the other character-on the type. bar will the adjustment of the controlling- .arm.

f Having thus described my invention, I claim:

1. In a typewriter, the' combination of a supporting member, afribbon guide arranged to reciprocatenon the supporting member to- ,ward and fromthe printing position, afle'xi-v ble shaft supported ,tooscillate, means for print, either red, black or.' plain according to causing the transverse reciprocation of -'the flexible shaft'to reciprocate the-ribbon guide., said'means being organized to vary 'the' posi.-

tions to which ythe ribbon is carried by the ribbon guide 'upon rotative adjustment of the shaft.`

combination Iof.. a 1

to reciprocate on. the supporting member toward andfromth'e printing position, a flexisof' ble shaft s upported to oscillate, means fory causing 'the vtransverse reciprocationl of the v exible shaft to reciprocate the ribbon guide,

said meansl being organized to vary the positionsto Vwhich the ribbon is carried by the ribbonV guide upon rotative-engagement of the. sha-ft, and means foreffecting the transverse reciprocationof the f ieigible sh aft from gthe universal bar. I

the combination of a .supporting member, a ribbon guide Aarranged Ward and from the printing position, a flexi- .fble shaft supported to' oscillate, means .for causing the transverse reciprocation -of the flexibleshaft to reciprocate the ribbon guide s'aid means being organized to va the'posi'- 'fito reciprocate on the supporting member tol tions to which the ribbon is carrie'd by the',-

ribbon ide upon rotative engagement of the sha t, means for effecting the transverse reciprocation of the flexible shaft `from the universal bar, and means forA rotatively arll justin(T the flexible shaft.

- 4. n `a typewriter, the combination'of -a supporting member, a ribbon guide arranged to reciprocate on the supporting member. toi ward and from a printing position, a flexible shaft, a lever pi'votally supported andarrangedto move saidshaft transversely when rocked, means for causing the bending of the flexible shaft by said lever to reciprocate the Ijbbon guide, said means including means to vary the movement of the ribbon guide by the movement of the flexible shaft on its axis. l A

5. In a typewriter, the combination of a supporting member, a ribbon guide arranged to reciprocate on the supporting member toward and from a printing position, a flexible shaft, a lever pivotallv supported and ar- I and its said engaging lever being organized ranged to move said shaft transversely when rocked,means for causing the bending of the flexible shaft byvsaid lever to reciprocate the ribbon guide, said means including means to vary the movement of the ribbon guide by 'the movement of the flexible shaft on its axis, means for swinging the Hexihle shaft on its axis to different positions, and means for retaining the shaft in such adjusted positions.

'6. In a typewriter', the combination of a supporting member, a ribbon guide slidably i carried on the supporting member to move toward and from a printing position, a lever pivoted on the supporting member and operated from a universal bar, a flexible shaft supported tor rotate, said shaft being connected withlsaid lever whereby the swinging of the lever will bend the flexible shaft from its axial line, a second lever, the flexible shaft having a cam surface where engaged by said lever 1neans for causing the swinging of the second lever by the cam surface of the shaft to oscillate the ribbon guide, said cam portion of the'flexible shaft, and its engaging lever being organized to shift the normal po' sition of the lever by the rotary adjustment of the flexible shaft.

7. In a typewriter, the combination of a supporting member, a ribbon guide slidably carried on the supporting member to move toward and from a printing position, a lever pivoted on the supporting member and operated fronra universal bar, a flexible shaft supported to rotate, said shaft being connected with said lever whereby the swinging of the lever willbend the flexible shaft from its axialline, a second lever, the flexible shaft having a cam surface engaged by said second lever, means for causing the swinging of the said second lever by the 'cam surface of the shaft to oscillate the ribbon guide, said cam ortion of the flexible shaft, and the second ever being organized to shift the normal position of the second lever bythe rotary adjustment of the flexible shaft, means for swinging the flexible shaft, and means for retaining the flexible shaft in such adjusted po- .sitions 8. In a typewriter, the combination of a supporting member,- a ribbon guide slidably carried on the supporting member to move toward andifrom aprinting position, a lever pivoted on the supporting member and operated from a universal bar, a flexible shaft supported to rotate, said shaft being connectedwith said lever whereby the swinging 'of the lever will bend the flexible shaft from its axial line, ay second lever, the flexible shaft having a cam :surface engaged by said second lever, v'a third lever engaging said second lever and also engaging the ribbon guide whereby the swinging of the second lever by the cam surface oftheshaft will oscillate the ribbon guide, said cam `portion of the flexible shaft to shift the normal position of the lever by the rotary adjustment of the flexible shaft.

9. In a typewriter, the combination of a supporting member, a ribbon guide slidably carried on the supporting member tomove toward and from a printing position, a lever pivoted on the supporting member and operated from a universal bar, a 'flexible shaft supported to rotate, said shaft being con nected with said lever wherebyr the swinging of the lever will bend the flexible shaft from its axial line, a second lever, the flexible shaft having a earn surface where engaged by said vsecond lever', a third level' engaging said second lever' and also engaging the .ribbon guide whereby the swinging of the second lever by the cam surfaee of the shaft will oscillate the ribbon guide, said cam portion of the flexible shaft and its engaging lever being organized to shift t-he normal position of the lever by vthe rotary adjustment of the flexible shaft,

of the lever will bend the flexible shaft fromA its axial line, a second lever, the flexible shaft having a cam surface where engaged by the second lever, a third lever engaging said second lever and-'also engaging the ribbon guide whereby the swinging of the second lever by the cam surface of the shaft will oscillate the ribbon guide, said cam portion of the flexible shaft and its engaging lever being organized to shift the normal position of the lever by the rotary adjustment of the flexible shaft, and resilient means arranged to retain said levers in engagement with said members.

11. In a typewriter, the-combination of a supporting member, a ribbon guide slidably carried on the supporting member to move toward and from a printing position, a lever pivoted on the supporting member and operated from a universal bar, a `flexible shaft supported to rotate, said shaft being connected with said lever whereby the swinging of the lever will bend the flexible shaft from its axial line,A a second lever, the flexible shaft having a cam surface where engaged by said second lever, a third 'lever engaging said latter lever and also engaging the ribbon guide whereby the swinging of the second lever by the cam surface will oscillate the ribbon guide, said earn portion of the flexible shaft and its engaging lever beine'y organized to shift the normal position of the second lever by the rotary adjustment of the flexible A flexible shaft'.

shaft, means for effecting such adjustment of the flexible shaft, means forretaining-the flexible shaft in adjusted positions to which it is swung by-said means, and an indicator for indicating the .adjusted l`positions ofv the 12. In a typewriter,` the combinationxof a supporting member, a' ribbon uide membercarried on said member to be s iftred thereon to .and from the printing position, means for reciprocating theribbon guide to .and from the printing position from themovement of a universal bar, a controlling member arranged tobe shifted to a plurality of positions, the

. lcording Vto the controlling member. and the mechanism operatmg: the ribbon guide being organized whereby the .ribbon guide will be shifted to differentpositions by the `universal bar acosition of the controlling member, aI reciprocatable A member, and means fo'r causin theshifting of said memberto vary the said path of movement o f the` guide member-to change the printing-posiv j -tion of the ribbon for such adjustment.

13. In a typewriter, *the combination of a.A supporting member, a ribbon `guide slidably.

carried on the supporting member to move toward and from a printing(J position, a lever pivoted on the supporting member and operated from a universal bar, a flexible shaft supported to rotate, said shaft 'being icone' nectedwith said lever-whereby the swinging of the lever will bend' the flexible shaft from its Vaxiall line, a vsecond lever B5 ivoted .on a

movable member, the flexible s aft having a Y cam surface Where engaged by said second .'lever, means forcausing the swinging of the second lever by the cam surface'of the shaft l'tgoscillatetheribbon guide, said cam por- 'ment of the ribbon tion ofthe flexible shaft, and its engaging. lef ver beingl organized to shift. the normal posi'- tion ofthe lever by the rotaryadjustment of 'theflexible shaft, and means for shifting the movable member to lshift the positionvof the v second lever and varythe paths, of moveguide, for the several'ad-VV justments.I

14. In a typewriter, the combination of a l supporting member, a'ribbon guide.v sllidably `1 carried on the supporting lmember .to Amove toward and from ra printing position,- a lever pivoted on the supporting member and operated froma'universal bar, a 4flexible shaft supported to rotate, `said shaft beingcom nected with said lever whereby the ,swinging -ofhthe leveryvill bend the flexible shaft from' its axial'line, afsecond leverv pivoted on v a movable member, the flexibleshafthaving a ca msurf'ace engaged by; said second lever,vv a third'lever engaging said secondlever, and also engaging'the ribbon guide Whereby the swinging of the second lever bythe cam sur-- face 'of the shaft will oseillate the ribbon', guide,l said camportion oftheexi'ble shaft and its'said engaging :lever being 'organized to. shift the normal position of the lever by the rotary adjustment of the flexible shaft, and means'for shifting the movable member to shift the position of the second lever andv

Images