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Publication numberUS1655957 A
Publication typeGrant
Publication dateJan 10, 1928
Filing dateMay 31, 1924
Publication numberUS 1655957 A, US 1655957A, US-A-1655957, US1655957 A, US1655957A
InventorsOtto A. Hokflinson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1655957 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Aw @m 5 Sheets-Sheet 1 Filed. May 31. 1924 Jan. 10, 1928. 1,655,957-

' o. A. HOKANSON STENCIL HOLDER FOR TYPEWRITERS Filed May 51. 1924 s Sheets-Sheet 2 Jan. 10, 1928.

O. A. HOKANSON STENCIL HOLDER FOR TYPEWRITERS Filed May 31. 1924 5 Sheets-Sheet 3 5 Sheets-Sheet Filed May 51. 1924 Jan. 10, 1928.


O. A. HOKANSON STENCIL HOLDER'FOR TYPEWRITERS Filed May 51. 1924 5 Sheets-Sheet 5 ill 3 dent. ltl.




Application filed May 31,

This invention to rs to a work holding; dev ce a. cially adapted for holding}; sten cilcards while they are i the name and addr by a typewritin The ohject oi: the invention is to provide stencil hol mechanism that may be operated by tl usual line since mechanism and which shall he of improved constructimi and operation.

The inveion evemplitied in the comhination and arrangement t parts showiji in the accouipanying drawinggs and. described in the following specii'icai'iion. and it is more particularly pointed out in the appended claims.

lln the dra wines,----- l It i" a trout elevation oi a. stencil :0 showing; one en'ihodiinent of the present invention.

l ies 2 is a. transvcriz-ze section suhr-itantially 2 oi? I 1.

El is a vertical section looking a t the opposie end of the device from that shown in Fig. 2.

Fig. 4: is a section on. line l0--l0 oi i y to the draw ujg' more particul:

- the top itramo logs. the lltllIK-JP'tl lll desighai a of a tvljiewriter. having way ll? thereon. upon which the carriage 1? travels. A. platen frame l lis supported on the carriage ll? Irv parallel arms and lo. which permit vertical u'iovoiuent oi' the platen carriagni tor case shift. A plat-en rod 1.? is journaled in the earriao; l4: and is provided with a platen it; shorter than the standard platform but of sutlicient ength to RCCOHUDO" date the usual stencil. card. ll. ratchet Wheel 19- is secured. to the platen rod 17 adjacent the letthand end of the carriage l and a line spacing lever 20 is pivoted at 21 on the carriage l4: and provided with a pawl 22 tor operatii'io' the ratchet. 19. The line spacing; mechanism may he of any well known mnstruction, the term illustrated he that oi the li oiuhitiadt typewriter.

1924i. Serial NO. 716,873.

which is coverod h v Patent No. 1243,110. In addition to the movement; imparted to the platen. hr the line spacing lever 20 the usual hnoh is provided for rotating the platen. ll. stop plate 24 is secured to the platen rod 1'2 adjacent the right hand end of: the frame as shown in Figs. 4: and 6. The stop 2 1i is segmental in form and provided with limit steps 25 spaced apart and arranged to engage a. pin 26 projecting inwardly from the end of the carriag'e trains 1d. The stop plate 24-. may he adjustahly attached to the rod 17 by a set screw 27, and a supplemental stop member 251% is pivoted on the shaft 17 adjacent the i-ie zmcut and iurovided with a screw Elli. which operates in a slot to hold the supplemental stop men'iher in adjusted positions relative to the segn'ient 24. In the position shown in Fig. 6 the rotation of the platen limited to an amount suiticient tor three lines of double space writing. When the s Jew 29 is moved to the extremity of the slot 30 the platen may be rotated a suiticient amount tor tour lines. It is usual to write either three or four lines on a stencil card.

its shown in 2, the opposite ones of the platen frame 14; are connected by a front bar 31 and a rear har The card holder 33. Fig. 9. is carried by the tront bar 31 adjacent the front face of the platen 18. The holder 33 is provided with ears 3- which are secured to t as har 31 by screws 35. The holder 33 is provided with down *ardlv and rearwardly curved hunters 36 as shown in Figs. 2 and 9, and the lower ends. oit tl'lese lingers are provided with stops 31' tor supporting the lower edp e ot a stencil card. Upwardly extending lingers 3%} ar: curved outwardly at their upper ends to direct a. card into place against the inner tare ot the holder 33. The upper (d e of the holder 5 is beveled. on its inner 'r as shown at l0, and the edgage' chned downwardlv from the ends thereof tmvard the con (.1. lhis arrangement iirevents the cei'itral portion of the card from striking the upper edge of the holder 83 as it moved into place and interfering; with the movement thereof. It will he seen that the ends of the card adjacent the guide lingers 38 pass the top ei'lge oi the holder in advanre oi the center of the new: the top edge of the tit) all)

holder it will be guided inwardly and thus be prevented from catching upon the top edge of the holder. The card holder 33 is connected with the rear cross-bar 82 by brackets 10, the left hand bracket being shown in perspective in Fig. 7. Each bracket is provided wth two sets of openings 41 for securing the bracket to openings l2 on the card holder 33. Screws t?) are provided for this purpose and the brackets 1 may be moved laterally iul'o eitherone of two positions, depending upon which set of openings ll are engaged by the screws 43. The brackets carry end stops i l and 45 for holdingthe stencil cards against lateral movement. The upper stop l l is curved outwardly to guide the cards into place. It will be seen that the bracket may be shifted to acconnnodate cards or tlilicrent lengths, it being usual to make the stencil cards in one of two standard lengths. The rear ends of the brackets 4-0 are secured to the rear crossbar 32 by screws 46, and a pair of holes 47 is provided in an car 48 at the rear end of the bracket 40 for this purpose. Theholes 47 are spaced to correspond to the spacing of the holes ll to permit the rear end of the bracket to be shifted laterally at the same time that the front end is shifted. The central portions of the brackets are provided with seats 49, which lie beneath the platen shaft- 17, and provide just sutiicient clearance to avoid contact with the shaft. It will be seen, however, that it any force is placed upon the platen tending to spring the shaft downwardly or laterally the seats 49 will provide supplemental braces near the center of the platen shaft for arresting any such movement of the shalt.

For moving the stencil card upwardly for line spacing a pair of card feeding fingers 50 is provided, one at each end oi the platen. The lingers 50 are preferably made of thin spring metal and each is provided with a seat 51 for-engaging the lower edge ot' the stencil, and with a T-head 52 which engages the front faces of tho lingers 36 andguides the feeding linger in its upward movement. Eachteeding linger provided with a rearwardly extending car 53, which lies adjacent the end of the platen 16 and is provided with a slot 5451 01 receiving a screw 55 by means of which the finger is pivotally supported on the end of. the platen. The linger 50 may be a. straight strip otspring metal, but when it is moved downwardly into the position shown in Fig. 2 its lower end will be curred rearwardly and inwardly by'the card holder since the card will be interposed between the finger and the holder. If desired, the lower end may be given a permanent curved form to conform to that of the card holder. The upper ends of the feed lingers are provided with effect portions 56 beneath which the ipper edges of the stencil cards po sitioned to positively hold the cards against upward n'ioveinent. It will be readily ap parent that the line spacing movement lllparted to the platen 18 will transfer a corresponding movement to the teeding lingers 50 and thus move the stencil cards upward-- ly each time the platen 18 is rotated for line spacing.

The ends of the platen 18 are cut away as shown at 57 to provide seats for the paper feeding lingers, so that the front faces of the fingers will be substantially llush with the periphery oi the platen.

it soli'ictimes desirable to provide a special backing "tor the stencil card and a sheet of celluloid or similar nmterial may be employed for this pin-pose. A magazine for holding such a sheet may be provided in the form of curved strips 58 attached to the rear cross-bar 32 by means o'l screws 55). One out the strips 58 carries a stop (it) for limiting the movement of the celluloid roll 61 as it is slid into place through the opeuing formed by the opposite strip. The celluloid sheet extends 'lorwardly through a set of feed rollers 62, i8 and 64-. From the l l roller 62 the celluloid passes downwm-dly about the platen 18 around the trout lace and back between the feed rollers (33 and o The feed rollers are supported upon plate. 65 and (36 extending upwardly from the bracket ell), the central roller (33 being provided with a fixed bearing- (iti in each oi the brackets while the upper and lower rollers are provided with elt'mgated slots o? and 68. The upper "teed roller (in. is carried mi a shrt't (i5) journaled in the slot (3?.

iand end of the shaft hcii'zg provided wi h a knob by means of which it is rotated. The lower roller is mounted on a shat ll journaled in the slot (38, and springs T2 con nect the shafts (39 and Tl at the opposite ends thereof for resiliently pressing the upper and lower rollers against the central roller. The central roller (S53 is carried on a. shall 73 having a tixed axis. lPipar-ing washers l are mounted on the shalt T3 at each end o the roller ti?) tor prevent ng end play ol the roller when the ln'arlqets l2 are n their outermost positions. These washers are of suiticient d ameter to overlap the ends o l the up-- per and lower feed rollers so that :1 single set ol' washers routi 'ils the endwise position of all three rollers. When the brackets 13 are moved inwardly the spacing washer I'll are unwed. The teed rollers are knurled or otherwise roughened to provide proper ripping Contact with thecelluloid sheet. henever a new liiacking face is desired it is only necessary for the operator to rotate the tinger-piece ill a suiiicient amount to bring a fresh portion of the celluloid sheet into the printing line.

It claim:

lif: 1 ypewriting machine a platen a.

frame in which said platen is jonrnaled, said 1 nine having a bar extending longitudinally oi said platen adjacent the front: taco there of, a curved plate mounted on said her and having a stop for supporting a cardbetween said plate an: said platen, and a member having its outer surface directly acing and spaced inwardly from the inner face oil said. plate to providi SPllCQilGl hoh'linp said card directly between the outer face of said memher and. the inner face oi? said plate, said member having a stop at its lower portion tor engaging the lower edge of said card, and means for connecting said member to said platen to cause said member to more said card upwardly tor letter spacing movement when said platen ii'otated.

The combination with a typewriter platen, ct a trains in which :5: id. pla on is journalcd, a bar extending long ludinally of said platen adjaceijit the front face thereoi. a curved plate mounted on saiidbar and having vertic: ll v extending slots therein, a pair of spring; .lin s disposed bet ween said plate and. said platen and pivota l ly connected with said platen, said. lingers haying in mm: there-- on for eu giningsaid. slots to be guided thereby, and means for rotating said. platen to car said sprinifii ingers to impart letter spacing movement to a ard interposed be tween said lingers and. said plate.

3, in a t pcwriting machine, the cornbinra tion with a platen, of a frame in which said platen is onrnaled, said frame having; a bar in ending; longitudinally of said platen adjacent the front face thereof, a card holder comprising a curved plate mounted ensafd bar and having; ineans at its lower portion for supporting a card. therein, a pair of spring: lingers pivotally mounted or said platen and having eng means at their lower ends flier engaging the lower of. go of said card, an d means r rotatin said platen to arise said spring lingers to impart lino spacing, niovcnieiirt to said card.

-:l.. The combination with a platen. ot' a work for supporting a :a rd adjacent the :tront iii-ace thereof, and means for supporting Will work holder in lined position in 'lront of said platen, said work holrcr co1nprising a plate (unwed in the direction. ot the sur iacc olf said platen but having a greater radius of curvauire, the upper edge of said plate being curved. away from said platen to provide easy entrance of a card between said plate and said. platen, meals on the lower edge of said plate for limiting the downward movement of a card held there by, and means at the lateral. edges of said plate for holding; said card against movement in the direction of the axis of said platen.

5. The cnnbination with a ty iewritcr platen, of a work holder therefor coni nrisinp,- a plate having supporting ears trained there on, spaced fingers projectinp downvardly from said plate and having stops at their lower ends tor limiting downward movement of a :ard held. by said plate, guide lingers projecting, upwardly iir :111 said plate at the ends the-refit said lingers heinp; curved out; p for receiving; the lower edge of a :ard, and a supporting bar arranged adjac ant the front lace of said platen to which said cars are attached.

6. la a typewriter machine, the combination with a platen, of a- W()]?{ holder ar "ringed adjacent the front :iiacc of said platen, a feeding lingo pivotally attached to the end of said platen, said work holder having a vertically extending slot therein, a stop at the lower end. o'l: said. feeding tinder for engaging; the lower edge of a card supported on said. worl: lioliiler and for holding; said ling -r snared inwariilly 'troin said work holder, means on said Feeding; linger lor eng; ,2, said slot to guide the lower end at said l igrer relative o said work holder when said pla is rotated for line spacing}; movement.

7. in a g'peirritinp; machine, the crunhina' lion with a pinion, oi? a work holder compris ing a plate estenilimg; longitiulinallv oli said plat 11 and spaced therefrom, and guides tlor directing a card between said plate and platen, the n i pcr edge of said plate being inclined downwardly away from said ides to prevent said edge from inte fitering with the movement of said card into place adjacent said platen.

8. ln a typewritingr machine, the C()1lll3ll1{L-- tion with a platen, ot a work holder comprising a plate arranged adjacent said platen and extending; longitudinally thereof, spaced guides extending upwardly from the upper edge of said plate for directing a card into position between said plate and platen, the upper edge of said plate beingbeveled inwardly toward said pl alien. and inclined downwardly away from said guides to Facilitate the entrainto ol' worl: .liotwron said plate and platen.

9. in a typewrilinn machine, the combination with a illaten, oil a frame in whicl'i said plated journahid, said frame having a bar extenajhng longitndnially oi. said platen ad picent the front face thereof, a work holder mounted on said. bar, feeding); lingers for lalOVll'iQ said card upward'lv between said worlrholder and platen, said lingers being pivotarlv mounted on the ends of said platen and having; means thereon ior engaging said work holder to guide said fingers thereon, said platen being grooved to provide seats for said lingers, and n eans for rotating; said platen to cause said fingers to impart line spacing; movement to said bar.

10. In t viiewritine; machine, a platen. a .iraine in which Paid platen i s join frame having; a bar extending ion.

oi amid platen ariiamenl; the train all . are 'lLl'l re till first-mentioned bar, ends of said platen supported on said work of and having second bar extending longitudinally of said platen adjacent the rear face thereof, a work holder mounted on said rackets adjacent the holder and said second-mentioned bar, and work feeding fingers connected with said platen and spaced inwardly from said work holder for imparting line spacingv movement to a card held by said work holder.

11. Ina typewriting machine, the combination with a platen, of a frame for supporting said platen, a work holder fixedly mounted on said frame adjacent the front face of said platen, means for imparting line spacing movement to work held in said work holder when said platen. is rotated, and side edge guides for said work adjustably mounted on saidwvork holder.

12. In a typewriting machine, the combination with a platen, a frame in which said platen is journaled, a work holder mounted on said frame adj acentthe front face of said platen, said frame having a bar extending longitudinally thereof adjacent the rear of said platen, brackets adjust-ably mounted on said work holder, a bar for movement longitudinally of said platen, and .side edge guides for cards held by said work holder,

= said guides being mounted on said brackets and adjustable therewith to provide for cards of different lengths.

13. In a typewriting machine, the combinationwith a platen shaft, of a frame in which said platen shaft is journaled, a platen mounted on said shaft and having the ends thereof spaced inwardly from the ends of said frame, bars connecting the ends of said frame and positioned one in front and one in the rear of said platen, and brackets supported by said bars and extending across said frame, said brackets having thereon in fixedrelation to said platen shaft closely adjacent the lower side said shaft for preventing displacement of said shaft adjacent the ends of said platen.

'14. In a typewriting machine, the combination with a platen, of work support there 7 for, andnieans for feeding a strip of celluloid aboutthe face of said platen between saidplaten and said work support, said feeding means being arranged to move said celluloid relative to the face of said platen and independently of rotation of said platen.

15. In a typewritlng machine, the coinbination with a platen, of a work support adjacent the front face thereof, feed rollers adjacent the rear face thereof, means for rotating said feed rollers, and a strip of backing material held by said feed rollers and extending about said platen between the face thereof and sa'id work support.

16.In a'typewriting machine, the combiw nation with a platen, of a work holder adjacent the front face thereof, three 'l'eed roll ers adjacent the rear face of said platen and having their axes arranged. in a common plane, and resilient means for drawin the outmost ones of said feed rollers toward the central roller to cause said outer rollers to cooperate with said central roller to grip a strip of backing material and feed said strip about said platen and between the face of said platen and said work holder.

17. The combination with a ty icnriicr platen, of brackets positioned :nljacent the ends of said platen and adjustable in the lirection of the axis thereof, feed rollers for directing a strip of backing material about said platen, said rollers being mounted on said brackets, and spacers removably interposed between said brackets and the ends of one of said rollers to hold said rollers against longitudinal movement for one position of said brackets relative to said platen.

18. In a typewriting machine, the combination with a platen, of a plurality of feed rollers for directing a strip of backing material about said platen, brackets in which said feed rollers are journaled, said ln-aelcets being adjustable in the direction of the length of said platen, and a spacing collar removably mounted between the end of one of said rollers and one of said brackets. said spacingcollar being of greater diameter than said roller so that it overlzuor the end of an adjacent roller to provide a guide for the edge of said backing material and to prevent longitudinal movement of said adjacent roller.

19. In a typewriting machine, the combination with a platen, of a card holder for supporting work adjacent said platen, line spacing means operated by said platen when said platen is rotated, a stop member connected with said platen to move in unison therewith, a fixed stop coo 'ierating with said stop member, and an adjustable stop mounted on said stop member for cooperation with said fixed stop.

20. In a typewriting machine, the combination with a platen shaft, of a platen mounted thereon, a card holder for supporting work adjacent said platen. means actuated by said platen when rotated for line spacing work held by ."l card holder, a. plate secured to said shaft and ha ring a stop fixed thereon, a second slop connected with said plate and aljustable relative to said fixed stop, a. frame for supporting said platen, and a stop carried by said frame for cooperation with the stops on said. plate.

In testimony whereof I have signed my name to this specification on this 29th day of May, A, D. 1924.


U.S. Classification400/535, 400/641, 400/136, 400/662, 400/533, 400/636, 400/615.1, 400/544
International ClassificationB41J13/12
Cooperative ClassificationB41J13/12
European ClassificationB41J13/12