US1556446A - Typewriting machine - Google Patents

Description

Oct. 6, 1925.

A. G. F. KUROWSKI TYPEWRITING MACHINE Filed Oct. 18, 1922 Patented Oct. 6, 1925.

v .5 m pmz, eon-rxngtor ion-1gp: zmwmmRA'rmNpEDEL WKRE,

ing in Brooklyn"bbronghfin thefeeu'ntjfpf meg, my and State-16f New Yotk, have invented fnelftfii'n new and useful; Impxd 'e& ments .'in Typ/ei vfiting Mi Qhines 'pf which the followingiis; eavspecificetibn; The preentlinvention felafis tomezmsf, cornbina-tipn, with: the {rptery' fplaten "effa typewfiting machine, gfor facilitating "and rendering; more 'aCenra-te and lexpedit'lons the pperation involved in [thej steni1ing" piprinting of, eard sf such', :7 for I instance; as stencil address] cai dsl' Morel pattiularly', theinv ention relates to fmejzins, fof the QChar} acter mentioned, 011 use in afi front-strike machine, and ,Whichp'roVi de foifintrodiie tion 10f v the e cards ,dbWiIlWiHdf bpttb'mend first, at the front ofthe p1eten,'to@printing 01 stenciling pbsition, and 'fdrfa flinegspacg mg and ejecting movement bf the c'lard'sjvith the platen in the ilsual direction. j f k A stencil card usually consists of atsni'all oiece of stencilpapenhaving a frame 0r order which Consists f e 2irdb0ii1d,'ztnd'thi s frame isfusually offsu'c'h lneterizitthatiti nbtdesised'vtoj be d. the stenei lfjaifd' around the platen; -Another. difficulty that has' bejen 0 vexper'i en cled' in handling these .c'afds'islthat they are not easily ,eontrolled by the platen and the feeding, devices eo-opemtin'g; therefwi 11,,soj that the .ca t s'a eliqb e to Sky? at the" line-"feeding orietz ttionsl Q 11se;.,Of Spatia fl t ,1 5, t i i 1151.5 er .tQfore been, equippedfwithQbends 'Of the pliivten, the maifgins bf the 1121 1161;litre in;

tqothed bandslf V, [In the Qstehifing pf lcar'ds; sllichifql jii istan e as address cards, ther ar ordinarily but a few lines to be stenciledg and thesejat definitexpositions n the caiidl'e Part-intretation of the platen iniqone diliei tibn, t6 bring the card down; :tq initial printing pg Sition, fend the Iothii .dineet'ion Qfoi f line Sp en ;e i l s, ith r' i i t; of di:

tfddnced between the and ni i tprinfin LP L G' J h lg m thepa ft ofthbperatorl""Itceinmonl ap pens, howeyeg; some ritingdn tie lne rg ln of t e 'rd desiireiijnaddition t0: h is ellc ling il; 1 1. body; lth r eb fi and mining the etzi ry 1;

fid the Screws and 5;;

end" Ofthe" plateneedr," for relie ng v the need p1epe; to' I the 5601 26 1 pf shbck .such as lnlght 'tjhetwi s el 'gid'sfen the s afiie iiilthe, at th iple en'insits fotaiy h ikinil 'dlyfin t v V U ilateitl; 7 t fjgnptllfi f fe -m re i theini ention I i 'fh p rqvlelpn" V pf insane I whereby the dviee Wh Qhi d inii es he i ft 'fy :th dw b the amt lil ieb ti the tep 1 p at n in eithendi-retion, ma apw 11;, e

s uchljiyritfingjis fisiredf of a positive feed, with all possibility of skewing eliminated.

Other features of the invention, in the preferred embodiment thereof, are: the provision of means for releasing the rollers, for insertion and removal of the cards; the provision of a novel form of chute for guiding the cards to position for engagement by the rollers and bands; a novel support common to the rollers and chute; means for adjusting such support for proper positioning of the chute and rollers with respect to the platen; and av novel means for locking the'support in adjusted position.

' Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a top plan view of the carriage of a typewriting machine equipped with the devices of the present invention.

Figure 2 is a front View of the apparatus shown in Figure 1.

Figure 3 is a view, in side elevation, partly cross-sectional, taken on the line 33 of Figure 1; the parts, with a stencil-card in v place, being shown in position preliminary to reverse movement of the platen to bring the card down to printing position.

Figure 4 is a view, in side elevation, partly cross-sectional, showing the card and cardholding devices, with the card in position for printing upon the upper margin thereof.

an Underwood typewriting machine.

' A bar 12 connects and holds the plates 10 together at the rear, and, at the front and below the platen, the plates are connected by'a rod 13. The rod 13 normally serves as a support for the levers which carry the front and rear pressure rolls (not shown). A rod 14, revolubly supported below the rod 13, serves to throw the pressure rolls. The plates 10 are also connected by a rod 15, which commonly serves as'a paperfinger rod. A bracket 16 on the platenframe carries a roller 17, by means of which the platen frame is supported for its movements in letterfeed and return directions on a rail 18 on a shift-frame 19. The frame 19 is rocked in a well-known manner to lift the main frame at 21, at their forward ends engage bosses or bushings 22 secured to the side plates 10 of the platen-frame, assist in lifting the platen-frame, and guide the same in its movements between case positions.

For making card-stencils a short platen is ordinarily employed. The short platen 23, in the present instance, is merely the curtailment or shortening of the rubber sleeve 24 of the ordinary platen; the wooden core 25, on which the rubber sleeve 24 is fitted, eX- tending to the normal full length of the platen, on both sides of the sleeve 24. The wooden core is provided at both ends with the usual metal heads 26, which set partly into the hollow of the core, and which have flat circular flanges 28 set against the ends of the core and secured to the core by wood screws 29. The heads 26 have bosses 30 by means of which the platen has bearing upon an axle 31, journaled in the side plates 10 of the platen-frame. To each end of the aXle 31 may be secured the usual hand wheel or knob 32 for rotating the platen. Also, on the axle or shaft 31, at the left of the platenframe, is the usual ratchet or line-space wheel 33, on which runs a detent-roll 34, mounted on a spring-pressed arm 35, forming part of the line-spacing mechanism. The latter also includes a handle 36, which returns the carriage frame and platen to the beginning of a new line; this handle usually having an arm 37 to press back a slide 38, and thereby to operate a pawl 39, which engages the ratchet-wheel.

According to the present invention, full rotation of the platen is unnecessary; there usually being but two 01' three lines of stenciling desired on any card, and a writing (which may or may not be desired) on the top margin of the card. WVhere the writing on the top margin of the card is desired, a greater rotary line-feed movement of the platen is required than where such marginal writing is not wanted. The following provision is made for a shorter rotary movement of the platen, where no top marginal writing is desired, and for a longer rotary movement of the platen when such writing is desired. A cap or cup 40 is snugly set over the right-hand end of the wooden core 25. It is secured by machine screws 41 to the head 26, and by wood screws 42 to the face of the platen beyond the head. The

cap 40 has an arcuate slot 43 therein concentric with the axis 31. A pin 44, which holds the boss or bushing 22 to the righthand end plate 10, is continued beyond the inner face of the plate 10 in line with, and so that, its inner end 45 projects into the slot 43 in the cap 40. The pin 44, therefore, by engagement with the end walls of the slot 43 in the cap, limits and determines the rotary movement of the platen. The slot 43 is of such length as to permit not only of the several lines; ofsteneilingjon the card proper, but also topermi-t of movement of the platen sufficient 'to' bring the top; margin of the stenciling' card' to the printing line for printing thereon Whereprintihg onthe top margin of the card is not desired, the 'rotary movementor play ofthe platen may be shortened, to the amount required for thestenciling onthe body of" the card, byineans' of a filler or block- 46 ('see'Figures 5 and 6): Thisiss'hown'ais a'fiat piece, of arouateshape, adapted to be laid over the lowerorrear portion of the-slot 43' to close such portion of the latter. It has a hole 47 at one end toreceive a screw 48 for securing it to the outer face of the cap 40. Its other end is recessed at 49 to receiveandserve as an abutment for the pin 44; when,"by the reverse or card-positioningmovement of the platen, thepin 44 isbrou-ght thereto. For holding the block or filler 46- against lateral or pivotal movements on" its screw 48, it is indented or ofi'set, as at 50, to enter the slot.

Secured by screws5l tothe wooden cylinder 25-, at each endof the rubber sleeve, or platen proper, 24-, is a metal ring or band 52. The rings or hands 52- have their surfaces serratedto grip' the side borders 53 of the stencil-card The bands '52 are preferably of such width as to" grip cards of different widths, and to permitlatera-l ad= j ustinentof the cards on the platenj Effectively to-grip' the cards, only ;a slightindentation of the margins thereof, by the bands, when thecar'ds are pressed against the bands bymeans presently-to be described, is necessary. -Gonsequentl'y, the teeth may be quite fine, andneed project but slightly beyond the stenciling surface of the platen; The

toothed bands are shown 'ascontinued entirely around the platen, but need be only of a length commensurate witht' lengtficof movement required torfee'cl the card'to print- 7 ing position;

v The stencrling isefiected against a strip 54 of celluloid, held to the face of the rub ber sleeve 24 by, a 'plate'55. The plate, 55 extends lo-ngitridinall-y of the platen, from one to the other of the bands or rings 52, and is secured to the platen by screws 56-,

which pass'throu'gh the plate and through the rubber sleeve 24, and thread, into the wooden core 25. The forward and rear edges of the plate are undercut, as' shown at u 57, to receive and hold the front and rear.

edges of the celluloid piece 54." "The walls or ledges which determine the undercuts 57 serve as gages for positioningand aligning V the celluloid faclng-pleces.

maybe slightly bentyto be sprunginto the undercuts in the plates 55, and, when worn, may be pulled out: forreplacement. 7

For holding the margins of the cards 5 with I a gripping" pressure .agai-nst the toothed ringsor-bands52; there are provided, one'for' the bracket 'arms guided in this movementby ears l'i, which are offset 'overthe= upper edges of the bracket-arms 65. Upon loosening the screw.- 75,- the corresponding platemay be. moved to The celluloid" end ofa brapket'orarm 65/ The brackets-ora-rms 6'5;are"'rnade fast, at their rear ends, to a, shaft 66, which passesthrough-bosses-GT on the bracket-arms; and which crosses from one to-the other side piece 10 of the platenframe; 'The-ends of the shaft 66- are-flattenedat 68, and screws 69 secure-the same to thefl anges 11 of'the side pieces;- Set-screws 70j secure thebra ckets 65 to the shaft 766 but these 'set-screws'may'be loosened to permit of lateral adjustment of the arms 65, as, for in stance, when cards of'diifer'ent widths are employed. x

The roll-carrying arms 60 have extensions: or tailsZI behind their pivot-points-62. The tail 71: of each arm 60 has secured thereto oneend of a coil-spring 72, the other end of whichcoil -spring 72is connected to an ear 73 one plate 74- set' ontheupper rear portionof the corresponding bracket-arm'65'and secured to thebracket-arm bya screw' 75*. I The springsf72, by drawing-upward onthe tails 71 0f the arms 60', maintain an elastic pres sure on the rollers 58 on thesi de 'Inargins'of any card-which may beset between theroljliers 58Iand the serrated bands 52L- To adjust the tension of the springs 7 2"; and-consequently of the rollers on theca-rds', the anchoring plates 74 for thesprings'7 2"are slotk ted, as at 76, to= -receive the sorews'zeysothat the plates: may be moved back' and forth on vary thetension-"ot the springgand', when the screw is again tightened, the head thereo will hold the ancl'ior-pl'ate V in fi xed position. s

The machineillustrated'is front-strike machine; one o-ft-hetype-bars 80 being shown inFi'gure4 opposite the printing point. The pressure-rolls 58 are at the front of I the r platenadjacent "the printing li ne; The cards or work-pieces are inserted, botare 7 fed" down to initial printing-position by a reverse rotary movement ef'theplaten: In

the line spa'cing 'and 'ca1 d-ejeCting move-- men-ts of the platen," the-cards are fed up ward without bending, and are removed' at thefron-t of the machine f v The plates 74 are toni end first, at the "front of the platen, and

and ejecting direction. The front wall of this chute is comprised of right and left hand plates 81, preferably of resilient sheetmaterial, secured, near their upper ends, by screws 82 to the forward lateral offsets of the bracket plates or arms 65. The plates or fingers 81, forming the front of the chute, have openings 83 therein, to accommodate the pressure-rolls 58, and have slits 84 extending upward from the openings 83, to accommodate the arms 60, which carry the pressure-rolls. The fingers 81 are extended below the printing-line, at a rearward incline, and, at their lower ends 85, bear against the shaft 14. The rear Wall of the chute is comprised of a pair of sheet-metal plates or fingers 86, having ears 87 offset laterally therefrom, over the front lateral offsets of the bracket-plate 65, between the latter and the fingers 81, and secured to the bracket-arms 65 by the same screws 82 which hold the fingers 81 thereto. Rearward offsets 88 on the fingers 86 provide space between the front and rear walls of the chute for easy movement of the cards therein. At their upper ends, as at 89, the fingers 81 and 86 are turned and bent away from each other, to provide a better mouth for insertion of the cards.

With the platen in the position shown in Figure 3, as determined by the pin-and-slot connection 4345, of the platen with the side plate of the platen-frame, the card 90 is dropped down the chute until, as shown in Figure 3, its bottom margin comes to rest on a ledge 91, formed on the forward edge of the celluloid holding plate 55, with the side margins of the card between the ser-' rated bands 52 and the pressure-rolls 58. At this time, as will presently be described,

the pressure of the rolls 58 is relaxed, per

mitting of free movement of the card between the same and the bands. The ledge 91 serves as a gage to align the card. The card being thus positioned and aligned, the rolls are released to cause the card to be pressed against, and gripped by, the bands. The platen is then rotated until arrested by engagement of the pin 45 with the rear or upper end of the slot 43 in the end cappiece 40 on the platen. This rotation of the platen, if the filler 46 (see Figure 5) is absent, brings the card to Figure 4 position, with the upper margin thereof at the printing-line opposite the type 80. If, however,

the filler 46 is present, rotation of the platen is arrested, with the card in initial position for stenciling at some point below the upper margin thereof. Movement of the card from Figure 4 position upward to stenciling position below the upper margin thereof may be effected by one of the hand-knobs 32 or by the line-space mechanism. The line-space movement of the card for stenciling on the body thereof is effected in the usual manner by the line-space mechanism. After stenciling has been completed, rotation of the platen is continued in line-space direction until arrested by the pin 45 at the other end of the slot 43. The pressure-rolls 58 may then be released, and the card seized by the upper margin thereof and withdrawn.

The pressure-rolls are released and reapplied by the following device. J ournaled in the bracket plates or arms 65 is a shaft 92, having fast thereto, near either end, against. the outer side faces of each arm 65, a cam-piece 93, having a cam 94 thereon, against which the tail 71 of the corresponding roller-arm 60 is held by its spring 72. When the shaft and cam-pieces 93 thereon are in normal position, the springs 72 hold the pressure-rolls to the bands 52, or to the margins of the cards interposed between the rolls and the bands. lVhen, however, the shaft 92, by means of a handle 95 thereon,

is rocked to Figure 3 position, the cams 94 depress the tail-pieces 71, and thereby rock the arms 60 to release the rolls. The normal and roll-releasing positions of the campieces 93 are determined by teeth 96 and 97, respectively, on the cam-pieces, in cooperation with pins 98 projecting from the corresponding bracket-arms 65. Lateral displacement of the shaft 92 is prevented by a collar 99, pinned to the shaft at the left-hand end, and by a similar collar 100 at the righthand end, which latter, however, is provided with a spline fitting in a groove or slot 102 in the shaft 92, and is held by a set-screw 101. When the set-screw is loosened, the collar 100 may be shifted along the slot, to allow for adjustment of the bracket-arms 65 on the shaft 66, when variation in. the

setting is desired to accommodate cards of different widths.

It is the usual practice to set the handle 95 to the Figure 3 position before inserting a card. After the card has been pressed down between the fingers 81 and 86 to meet the ledge 91 of the platen, the hand of the typist comes in contact with the inclined face of the handle 95 and effects a rearward movement thereof to release the rolls 58 for pressure against the platen. The card may then be run down to the printing field by rotating the knob 32.

The bracket-arms 65 are not only supported by the shaft 66, but are also supported by the shaft 15, which passes through openings 104 in the bracket-arms. The openings 104 are of greater diameter than the shaft 15, so as to permit of angular adjustment of the bracket-arms around the shaft 66, for adjustment of the position of the pressurerolls 58 and of the paper-fingers, forming the chute at the front of the platen, with respect. to the platen. For steadying the bracket-arms 65 on the shaft 15, and for locking the bracket-armsin desiredposition,

with .the shaft :92 horizontal, and with-the rolls. and chute in proper position, thereis, on each bracket-armfl65, .a triangular.. .l'ate 106. Eachplate106 has a boss 1'07 tted snugly over the-shaft .15, .andset-screws 108 are provided lfor lockinglthe platesl106 to bracket-arms 65. The holes in the plates .firnilyiheld in place.

1:06 for the screws .109 and 110., however, are larger than thescrew s,so that, by virtue of the excesssize of these'holes and of theholes .104 .inlthe .bracketearrns which receive the shaft .15, 'a ,pla-y'is allowed between the plates 106 and the bracketearms 65,, when I. the screws 1019 and 110 are loose, thus' permitting .of t'he adjustment, referred to,leitthe bracket-arms. Proper ;adji1stment0fthe bracket-arms having been obtained,; the screws .are tightened, and the bracket-arms, with theshaft 92 in the properlongitud inal position and with the; rolls and the chute in proper relation .to the platen, are thus One .of 'the functions of. the cap isto relieve the screws 29 of shockswhich would tend to work. the same loose inthe wooden :core. Where the cap is absent and i the stops,which determine the rotary throw of the platen, are direct-ly .onthe head, it has been found the screws '29 have a tendency to lwor'k-jloose, and, in working loose, disturb the accuracy 'of Ifeedl of the platen. the present il1stance,. as heretoioreqnoted, theicap, while secured to the head by machine-screws,..is also secured to the tore by the screws .42, which arexdireclled into the cylindrical .-face thereof; The snug fitting f t'he' cap on" .the core and thev'further anchoring of the cap to the corghby the screws 452,".rlieve' the screws 29-iofl such shocks :as would tend .to loosen" the; headplate. 'Variations may heresorlt'edto withinfthe scope of the invention, porticns loffthe improvements may he: used without iolthers. .1; Having thus 'desclfihedmy invention, '1 ms,

front-strike ty pewritin g the combination with a rotary; platen of rollers, arms on whi'eHtherOllersIare mount- :ed, snpportingplates-to which the roll-hear .ing arms are pivoted, springs connected to the rellrbearing arms for causing the-rollers to. press :against' the platen, ,,amd slides adjnstahle .on thexsupporting plates fora-nchoring and 1 varying .the tension of the springs; saidslides .havingioifsets,whiehride on the edges of their supperting plaltes, and pin zand slot connections with saidsupporting plates, :wherebysaid slides are, guided their movements ioradjustment if the tension of thesprings; 1

a-Irdmemovedutherefromat will.

work p iecesihottom end first to printing pp.- sition, ar-ms or plates on which the-chute is platen mounted,.aisupportat the rearezffthe re {0J1 whiehith'e arms or plates-are Pinotal iju stahlefga. redepassing. throughl ajllarger opening in at he arms or plates, .leeli plates fast toIsaid-rod and setiagaiinst the clmte- 1 supporting arms or -p:lates,.;and headed screws passing through larger openin :in the lee k pla-tesiandthreaded into the c utesupportinig plates Q; whereby, when the screw s reason of the size-of said rod holes therein,

and i reason 10f the size of th Screw holes in the lock ,plates, mayhavea limited angu laruadjustment, and, when the screws Iare tightened, theachute-supporting plates are locked in adjusted position. 1, V 4. 111.. a itypewritin gymachine, a rotary r e i i h ving. n m t qt and =the1enf;eoncentric with its axis, {a 1 in h ha e is i na Pin smii d l y Waite-me proj n r ver vate slot rte flimit I the ,.rotary movement --o-:t the we e th l ngths ts and .xferteningthe slot to .prescribetagshonter rotary movement of theplaten. k In. e tr e r ns m e, r0 :Pht wir'fi e ers s e p a n: t e zr at n i j nw dy an m s ot in re ewi wprn i g i i sl fi eidie emmt concentric'with the platenaxi-s a -pin carried Mem e h K iei -eh n ..p ejectfing irate the arcuate slot to -lim i-tthe rotary .mewement ofthefplaten :to' the length of ;the islet-,md; means iior shortening the slot .to

prescribe ashonter rotary movement to the platen, said slot+shentening+ means I com-prising-a filleradapted'to beset into the slot platen, a; gframe i'having' side plates which the .platen is journaled, anarcuate *slot in one of the: bpposingfaces of said -elen'1ent-s are 1o0se,'the chute-supporting plates, by :99

concentric withzthej platen axis,; a :pm carl d y. he ether o aid eme s n 1p .jecting-ieto the-.arcnate 'slot to limit the-,.-ro-

.tagry movement of the platen to the-length -ef .the slptz.,.';and.-me a'ns for shortening. the slot toprescribe a shorter rotary movement to the Qplaten, said, slot-shortening means comprising.&& filler inthe .form of a" plate adapted to be set against and secured to the slotted element, and having an offset which projects into the slot when the filler is in place.

7 In a typewriting machine, a rotary platen, a frame having side plates in which the platen is journaled, an arcuate slot in one of the opposing faces of said elements concentric with the platen axis, a pin carried by the other of said elements and projecting into the arcuate slot to limit the rotary movement of the platen to the length of the slot, and means for shortening the slot to prescribe a shorter rotary movement to the platen, said slot-shortening means comprising a filler in the form of a plate adapted to be set against and secured to the slotted element, and having an arcuate offset of the curvature of the slot, which oflset projects into the slot when the filler is in place.

8. In a typewriting machine, a rotary platen, a frame on which the platen is journaled, a member having an arcuate slot therein associated with the end of the platen, a pin carried by the frame engaging said slot for limiting the rotary movement of the platen to the extent required for writing a given number of lines on a workpiece, and means for enlarging such limit to permit of a greater restricted rotary move ment of the platen.

9. In a typewriting machine, a rotary platen, a frame on which the platen is journaled, a plate having an arcuate slot therein carriedby the end of the platen, a pin pro-' jecting into said slot from said frame for limiting the rotary movement of the platen in counter line-space direction to determine the initial printing position of a work-piece fed bottom end first, ,atthe front of the platen, to such printing position, and means for enlarging such limit to permit of a greater rotary movement in said direction, for printing at a higher initial position on the work-piece.

10. In a typewriting machine, a rotary platen comprising a core of wood or other fibrous material, a head-piece secured to the core by screws or pins passing into the end face of the core,'a cup set over the headpiece and over thefend of the core and having its side wall secured to the core by screws or pins, and its bottom screwed or pinned to the head-piece, a frame in which the platen is journaled, and a pin on the frame project ing into an arcuate slot in the cup concentric with the axis of the platen to limit the rotary movement of the latter.

11. In a typewriting machine, thecombination with a revoluble platen, of work-introducing means comprising guides at the front of the platen adjacent each end thereof and arranged to receive the side edges of a work-piece to guide the same, downwardly to the printing line, the lower por rearwardly whereby to aid in preventing slippage thereof, and a pair of rolls 00- operating with said guides to hold the work- I piece, the rolls pressing the upper edge of the work-piece against the platen at a point immediately above the printing line, whereby shadowing of the upper-case type is prevented and the work-piece is in position to receive typing closely adjacent its upper edge.

12. In a typewriting machine, the combination with a revoluble platen, of work-introducing means including a frame dis osed above the platen, guides carried by the frame adjacent each end of the platen and arranged to receive the side edges of a workpiece to guide the same downwardly to the printing line, the lower portion of the guides flexing the work-piece rearwardly whereby to aid in preventing slippage thereof, and a pair of rolls pivotally secured to the frame and co-operating with said guides to hold the work-piece, said rolls pressing the upper edge of the work-piece against the platen at a point immediately above the printing line of the platen, whereby shadowing of the upper-case type is prevented and the work-piece is in position to receive typing closely adja ent its upper edge, said frame being movable to adjust the position of said rolls relative to the printing line.

13. In a typewriting machine, the combination with a revoluble platen, of means for introducing a Work-piece bottom edge downwardly at the front of said platen comprising two substantially vertically-arranged guides spaced one in front of the other adjacent each end of the platen whereby to provide a pair of oppositely-disposed guiding channels for the side edges of the work-piece, the rear guide being tangential to the platen and having its lower edge terminating thereabove to provide clearance for the. platen, and the front guide extending below the printing line. to guide the work-piece as it is moved downwardly to typing position at the front of the platen.

14:. In a typewriting machine, a revoluble platen, a pivoted frame mounted above the platen, work-piece introducing guides fixed to the frame adjacent the front of the platen, and feed-rolls carried by said frame for pressing against the platen to aid said guides in holding a work-piece during typing thereof, the frame being bodily swingable about its pivot to ad ust said frame to different heights whereby to change the position of the. feed-rolls relative to the printing line of the platen.

15. A typewriting machine having a revoluble platen and releasable feed-rolls to run upon the front thereof to hold a card against the front of the platen, work-introduclng means comprising a chute ad acent said feed-rolls and extending up from the front of the platen to guide the card doWnwardly between the feed-rolls and the platen, the rolls normally pressing against the platen, and a releasable device settable for holding the rolls away from the platen during card-insertion, said device being over the platen and in rear of the chute and adjacent thereto at aheight to. be engaged and operated by the hand after the 7 card has been pressed down into said chute, said device being so placed that it is operated to release the rolls for pressure against the platen as the bottom edge of the card is presented to the bite of the rolls of the platen. Y

16. In a typewriting machine, the combination of a rotatable platen having serrated sections at the ends thereof, releasable serrated rolls supported at the front of said platen and co-operating with said serrated sections to line-feed a stencil-card, a pair of gages mounted upon said platen for gaging the stencil-card at the first printing line, and means for automatically limiting the backward movement of said platen.

ALFRED G. F. KUROWSKI.

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