US1554253A - Typewriting machine - Google Patents

Description

' se pzz, 1925.

. 1,554,253 J. A. B. SMITH TYPEWRI'PING MACHINE Filed July 6, 1922 2 Sheets-Sheet 1 sept- 22, 1925.

J. A. B. SMITH TYPEWRITI NG MACHI NE Filed July 6, 1922 2 Sheets-Sheet 2 Patented Sept. 22, 1925,

UNITED srares PATENT OFFICE.

JESSE A. B. SMITH, OF STAMFORD, CONNECTICUT, .ASSIGNOR T UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. 'Y., A COBLPORATION OF DELAWARE.

TYIEWRI'IING MACHINE.

Application and July 6,

- To all whom it may concern Be it known that {1, JEssnA. B, "SMITH, the toothed bands.

a citizen of the United States, .residing in Stamford, in the countyof Fairfield and State of Gonnecticut,'have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

The present invention relates to means, in combination with the rotary platen of. a

i typewriting machine, for facilitating and rendering more accurate and expeditious the. operations lnvolved 1n the stencilmg or printing of cards, such, for instance, as stencil address cards. 'More particularly, the invention relates to means, of the character mentioned, for usein a front-strike machine, and which provide for introduc tion of the cards downward, bottom end first,at the front of the platen, to printing or stenciling position, and for a line-spacing and ejecting movement of the cards with the platen in the usual direction.

A stencil card usuallyconsists of a small piece of stencil paper having a frame or border which consists of cardboard, and this frame is usually of such material that it is not desired to bend the'stencil card around the platen. Another difficulty that'has been experienced inihandling these cards is that they are not easily controlled bythe platen and the feeding devices co-operating therewith, so that the cards are liable to skew 'at the line-feeding operations; It has been proposed to place the card in a frame and to gear the frame to the platen, so as to effect positive line-feeding of the card, but this requires expensive and bulky mechanism for which there is usually no room in a front-strike typewriting machine. a

(For preventing skewing of the cards in the feed of the same, while avoiding the use of all. such special frames; it has been proposed to equip the platenwith bands of fine teeth, for indenting the margins of the cards, and to provide spring-fingers for holding the mar ins of the cards to the toothed bandsvvi a pressuresuificient to eftect such trailer ting, when, by rotation of 1922. Serial No. 573,141.

the platen, themargins of the cards are introduced between the spring-fingers and platen. In this connection, a feature of the invention is the provision of means whereby the fingers, which co-operate with the bands, may be adjusted lengthwise of the platen, with respect to the bands, according to the width or desired position of the card to be used.

A further object of the invention is the provision of a platen having a plurality of stenciling or printing fields thereon, one in advance of the other, and preferably represented by separate, replaceable strips or piecesof celluloid or other suitable material; either of which fields may be selected and used for the stenciling of addresses, or inscriptions of a few lines, on the cards; and

one of which fields may be substituted for another, by turning the platen to a new setting, when the celluloid or backing on a field becomesworn. In the use of such a platen,

the delays and inconvenience incident to replacements or readjustments of the celluloid or other backs are reduced to a minimum.

A further object of the invention is the provision of means for. efiecting and determining, as to any selected one of the stenciling fields, a movement of the card with the platen, downward bottom end first, at the frontof the platen, to stenciling or printing position, and linesspacing and card-ejecting movements 9?? the, a i h the platen in opposite direction; and for releasing the means which determine the movements of the platen for a given stenciling field, so that the platen may be set for another of the fields, and the controls again set for that field.

Another feature of the invention is the provision of a stop-device to which the platen may be connected to have movement therewithbetween normally fixed stops, but with respect to which the platen may also have a differential movement; thus providing for ample throw of the platen, while permitting the fixed stops andthe carrier therefor to be set, and to be movable betweenelfective and ineffective positions, in a small space, unobstructed .by other parts.

A feature of the invention is a construction of the fingers for holding the cards to the toothed bands; which construction, as to each finger, maycombine with the fii'igerproper, in a single, cheaply made, sheetmetal piece, a .chute, various aligning means for the cards, andastop for determining the position forprintingon the top margins of the cards; and which, as a unitary and separately manufactured article, may be quickly and easily attached to or replaced in the machine.

Other features and advantages will here inafter appear.

In the accompanying drawings,

Figure 1 is=a top plan view .of the carriage of a typewriting machineequipped with the devices ofthe present invention.

Figure 2,is a front view of :the apparatus shown in Figure l.

Figure .8 isxa view-in side elevation, partly in cross-section, taken on the line 3-3 of Figure 1'; the parts, withga stencil-card in place, being shown in position preliminary to reverse movement of the platen to bring the .card .down .to the printing position.

Figure 4 1.8 ,a view similar to Figure 3,

except that the parts are shown .as having beenmoved to position .to print upon the top margin of the .card; the stop-device being also shown in dotted line or iii-ineffective position.

Figure 5 is a view, incross-section, through the platen on the line 55 of Figure 1.

Figure 6 is a front viewuof the platen indicatin g the use of cards of different d i niensions in connection with the toothed bands.

Figure 7 is a viewin perspective of the right-hand end of the platen.

Figure 8 is a perspective view of the stopdisk for the rightshand end of the platen, be'ingshown as spread away from the Figure 7' view of theplateinmore clearly to show; the details in their proper relations.

Fig. 9 is a top plan view of the front of one of the bands; the pressure-finger being shown in cross-section in its relation to the band.

Figure 10 is a View similar to Figure 9, except that the card is shown as having been inserted between the band and the finger.

The invention is shown as applied to an Underwood typewriting machine. The drawings show the platen-frame found in such a-machine. This frame comprises side plates 10, having laterally-offset portions or flanges 11 on their upper edges. 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 18 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 paper-finger-rod.

For making card-stencils, a short platen isordinarily employed. The short platen 16, in the present instance, however, is carried, and in part formed, by a longer metal cylinder 17, having heads 18 secured in the ends thereof, by screws 19, and having end plates 20 in which is centered the shaft 21, on which the cylinder is rcvolubly mounted in the end plates 10 of the casing. The shaft 21 passes through the plates 10, and, on its ends, carries the usual hand wheels or knobs 22, by which the platen may be rotated. Also, on the shaft ,21, at the left of the platen-frame, isthe usual ratchet or line-space wheel 23, in which runs a detent-roll 24, mounted on a springpressed arm 25, forming part of the linespacing mechanism. The latter mechanism also includes a handle 26 which returns the carriage-frame and carriage to the beginning of a new line; this handle usually having an arm 27, to press-back slide 28, andthere by operate apawl 29, which engages the ratchet-wheel '23.

The platen proper is shown as centrally located on the metal cylinder 17. It (0111- prises a rubber-sleeve 30, closely fitted onto the cylinder 17. Secured by screws 31 to the cylinder 17, at each end of the rubber-sleeve 30, is a metal ring or band The rings or hands 32 have their surface. toothed, as shown at 33, to grip the side bonders 34 of the stenciLCard. The bands 32 are preferablyof such width as to grip. cards of different widths, or to permit lateral adjustment of the cards on the platen, while presenting an effective gripping surface. To accommodate themselves to cards of different widths, the rings 32 are flat, and the teeth thereof extend laterally across the same,=from edge toedge. Effectively to grip the cards, only a slight indentation of the margins 34 thereof, by the teeth 33, when the cards are pressed against the bands by means-presently to be described, is necessary, Consequently, the teeth may be quite fine, andneed project but very slightly'be yond the stenciling surface of the platen. The teeth 33 are shown as continued entirely around the bands 32, although, as will hereinafter appear, the teeth at certain parts of the periphery of the bands are not utilized, and might, therefore, be omitted. v p The, stenciling is effected against one or another of a plurality of strips 35,. of celluloid, held to the face of the rubber-sleeve 30, by plates 36.' The plates 36 extend'lon itudinallyi of the platen, from one to tie other of the. bandsorring's 32, and are secured tothe platen byscrews 37, which pass through the plates and through the rubbersleeve 30, and thread into the metal cylinder 17 Two of these plates are shown, on

, opposite sides'of the platen. The forward and rearedges of the plates are undercut,

= as shown at38, to receive and holdtfhe edges ofthe celluloid pieces 35. .Each plate 36 holds. the front edge of one celluloid piece and the rear edge of the other celluloid piece. The Wallsorl ledges which determine the undercuts 38 serve as gages for positioningand aligning the celluloid facingshrThe strips of celluloid may be slightly bent to be sprung into the undercuts in the plates 36-, and, when worn, may be pulled. out. More easily to permit the removal of a pieceof celluloid, the plates 36 are, shown ,as each having recess 39, in one edge thereof, to

allow insertion of a finger beyond the edge of the celluloid.

,.l*or guiding the stencil-cards onto the platen, and for holding'the same with av grippingpressure against the toothed rings or hands 32, sheet-metal fingers 40 are pro-' vided. These fingers. have ears 41, to receive screws 42, for supporting the fingers on offsets or flanges 43 on the forward ends of. arms 44. There are two arms 44, one

forsupporting each of the fingers, and these arms, attheir rear ends, connect to a rod 45,, .which. extends from one to another of the platen-frame end pieces 10, and is flattened at its ends, to receive screws 46, by means of which. it is secured to the platenframe. The arms 44'are recessed intermediate their length, to. receive the rod 15, which assists in supporting the arms, and which prevents rotary movement of the same on the shaft 45. Set-screws or thumbscrews 47 fix the position of the arms 44, to setthefingers 40 in proper position with respect to the toothed wheels. Preferably the arms 44, together with .the fingers 40, areadjusta'ble, lengthwise of the platen, for cardsof difi'erent widths.

At their upper ends, the. fingers are indined, a 4 from a p s ion a ve the cards down into position.

card, as shown in Figure 4.

platen, downward and forward toward, the

front surface of the platen, to guide the The inclined portions 48 of the fingers are also provided with forwardly-offset flanges 49, to serve as gages for the side margins of the stencilcards. The incline 48 on each finger ter- 'minates in a lateral cut 50in the finger;

the finger being bent out at 51, below the cut 50, across the path of the card being pushed down the incline. The lower margin of the card, as the latter is fed down into position, strikes the offsets 51, and is thereby guided to a ledge 52 formed upon the upper edge of the forward plate 36.

This ledge 52 serves as a gage properly to align the lower edge of the card. Below the offsets 51', the fingers 40 are extended,

so grippedas to prevent slipping and skewing as the card is brought to printing position. Engagement of the lower edge of the-card with the ledges 54,, at the lower ends ofthe fingers, may-determine the position for writing on the top margin of the As shown at 51*, in Figure 1, the card-gripping portions of the fingers are inclined laterally toward the..toothed bands. The slit 51", which allowsfor the offset 51, also weakens the con nection of the finger-proper toits support ing ear 41; so that the finger-proper may yield laterally with respect to the ear, as wellv as, as a whole, forward. Slits 49 permit'the forward ends of the ears or side gages 49 on the chute 48 to be turned out laterally, as at 49 so that, if the top margin of'the card, is fed beyond the ears 49 in the movement to printing position, the

card will again enterthe chute without obstruction on movement of the platen in linespace or ejecting direction.

rality of stenciling surfaces on the platen, as is exemplified by the use of the two strips of celluloid to serve as backsagainst which the stenciling-is done. One of these celluloid surfaces may be used until worn, and

then, without immediately replacing the same, the plate-n may be turned to bring the other celluloid surface into use, Provision is, therefore, made for two different rotary movements of the platen, ,to'wit, a, i movement between certain limits for the positioning andstenciling of the card in one of, the celluloid fields, and another move ment toset the platen for use of the other celluloid field when the first is worn or is to. be discontinued. These movements of th platen are effected and determined as follows.

Journaled on the plateirsl aft, at the right-hand side, to have limited rotary movement of the shaft, with respect to the platen, is a. disk The movement of the disk-55, relative to the platen, is, provided for, and determined, by arcuate slots 56 in the disk, through which slots pass shouldered screws 57, threading into the head of the platen, In feeding the cardfrom its initial, Figure 3, position (after its lower margin has been brought to rest on the ledge 52), to printing position, the platen may have a limited movement, independent of the disk 55,. until the screw 57 reaches theend of the slot 56, whereupon the. platen willpick up the disk and carry the same until the disk is arrested bymeans presently to be described; or, if friction causesthe disk to participate in the initial movement of the platen, then, after the disk is arrested, the movement of the platen may be continued until the screw 57 has traversed the leiig'th of the slot 56. In this manner, in bringingthe card to printing position, provision is made for a greater movement of the platen. than ofthe disk; and the stops which control the movement of the diskmay be set closer togetherthan might otherwise be practicable.

The stops, which control the movement of the disk in each celluloid stenciling field, consist of a pin 58, fast to, and projecting outward to .the right from, the disk, and two normally stationary fingers 59-and so. between which the pin 58 has play. In Figure 3, when the card is-set on the ledge 52, preparatory to movement of the same w th the platen to printing position the pin .58-is shown as in COIltitCir with. the finger hen the disk is picked. up by the screw 57, upon rotation of the platen, the pin: is carried in the direction of the arrow to the finger 60, by means of which finger it is arrested. and, when so arrested, the disk, in turn, arrestsand determines the movement. of the. platen to card-stenciling position. On contact of the screw 57 with therightdiand end of theslot 56, as thelinespace mechanism is-actuated in the stenciling operation. th platen has movementin the opposite direction, first. relatively tothe disk (unless friction causes the disk to move with the platen), and then with the disk until the pin .58 on the disk is arrested by the finger and the screw 5.? on the platen is, arrested by engagement with the left-hand end of the slot 56.; the. parts being thus m ved ba k; tram Fig-lire e. rarities t0 Ei ure 3 position, It will be understood that the operation thus described'involves sten:

.the disk 55, to bring the. other pin .58. on

the disk into the field previously occupied by the pin 58, To permit the fingers 59iand 60 thus to be lifted, the same are formed on a plate 61. pivoted at 62, one shouldered screw, threaded into a bracket 63. The bracket 63 sits astride the -lefthand framemember 10, and is secured thereto by a screw hen the plate 61 is swung around its pivot .62, the fingers 59. and 60 are lifted out of the path of the pins 58 and 58; and, for efiiecting this movement of the plate 61, the same is provided with a finger-piece 6.5, A spring 66, secured at one end to the plate .61, and at its other end to thebracket .63, normally holds the plate 61 with the fingers .59 and 60 in effective, Figure 3., position, and returns the same to suchposit-ion. when the fingerepiece 6.5 is released, Theplate 61 has an arcuate. groove therein, to.,perrnit the same to straddle, and be. moved with respect to, the rod 15, connecting; the. frame-members 10. I

hen the plate 61 is lifted to dotted line, Figure 4, position, the platenis free to be turned by the hand-wheels. or, by the. linespacing mechanism. until the. pin 58 isin the field previously occupied by the pin 58, and one celluloid piece occupies the position previously occupied by the other, Thereupon the plate 1 is released tov the action of the sprint 66. to set the stops so and 60.:t'or, the pin. 58 Thereafter the movements-of the platen and of the disk .are as heretofore noted, except that these .movements are controlled by the pin 58,

instead of by the pin 58. Two p.in-and.- slot connections 5657v are shown between the disk55 and the platen, but these act'as .connectionof the disk to the platen, however, permits the stop mechanism to be condensed in a small space, and to be set well clear ofv suchstandard structural features as might otherwise interfer with the same.

Certain features herein disclosed are madev the SIIli lQCt-matter of the application of Burnh am C. Stickney, Serial No. 532,188. filed January 27, 1922, uponwhich thepresea inven -ion. a i provem n Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: p p

l. The combination witha-rotary platen having sharp teeth, set around the periphery thereof, for indenting, and thus gripping, work-pieces by their margins, of a springfinger for holding the margins of the workpieces against the teeth with pressure sufficient to cause the teeth to indent the margins; saidfinger depending across the printing line at the front of the platen and being inclined downward and rearward above the gins; said finger depending across the printing line at the front of the platen and being inclined downward and rearward above the printing line to form with the toothed band a throat for guiding the margins of'the work-pieces into contact with the teeth, a

chute forming a part of the spring for guiding the workpieces forward and downward intocontact with said downward and rearward incline, and anear ofi'set forward from the chute portion of the spring to serve as a gage for the side margin of the work-piece. 3. The combination with a rotary platen having sharp teeth, set around the periphery thereof, for indenting, and thus gripping,

workpieces by their margins, of a spring- .finger for holding the margins of the workvpieces against the teeth with pressure suffi-' cientto cause the teeth to indent the margins; said finger depending across the printing line at the front of the platen and being inclined downward and rearward above the printing line to form with thetoothed band a throat for guiding the margins of the work-pieces into contact with the teeth, and

a chute for guiding the work-pieces forward and downward into'contact with said down- .ward and rearward incline; the chute and the throat portions of the, springlbeing in alignment, and the spring being slit between these parts thereof to permit passage of the work-piece from the front of the chute to ,therear of the throat part.

4c. The combination with a rotary platen having sharp teeth, set around the periphery thereof, for indenting, and thus gripping, work-pieces by their margins, of a springfinger for holding thev margins of the workpieces against the teeth with pressure suflicient to cause the teeth to indent the margins; said finger depending across the print- .ing line at the front of the'platen and being inclined downward and rearward above the printing line to form with the toothed band a throat for guiding the margins of the work-pieces into contact with the teeth, means for guiding the work-pieces forward and downward into contact with said downward and rearward incline, and a gage on the platen for movement with the platen to the apex of the throat, to receive and position the lower margin of the workpiece preliminary to movement of the platen with the work-piece to printing position. e

5. The combination with a rotary platen having sharp teeth, set around the periphery thereof, for indenting, and thus gripping, work-pieces by their margins, of a springfinger for holding the margins of the work pieces against the teeth with pressure sufiicient to cause the teeth to indent-themargins; said finger depending across the printing line at the front of the platen and being inclined downward and rearward above the printing line to form with the toothed band i a throat for guidingthe margins of the work-pieces into contact withthe teeth, and a gage on the platen for movement with the platen to the apex of the throat, to receive and position the lower margin of the workpiece preliminary to movement of the platen with the Work-piece to printing position.

6. The combination with a rotary platen having sharp teeth, set around the periphery thereof, forindenting, and thus gripping,

workpieces by their margins, of a springfinger for holding the margins of the w0rkpieces against the teeth with pressure sufficient to cause the teeth to indent the margins; said finger depending across the printing line at the front of the platen and being inclined downward and rearward above the printing line to form with the toothed band a throat for guiding the margins of the work-pieces into contact with the teeth, and a gage formed on the spring below the printi11 line to determine the downward throw of the work-piece.

' 7. The combination with a rotary platen having sharp teeth, set around the periphery thereof, for indenting, and thus gripping,

work-pieces by their margins, of a springfinger for holding the margins of the workpieces against the teeth with pressure sufiicient to cause the teeth to indent the margins; said finger depending across the printing line at the front of the platen and be ing inclined downward and rearward above the printing line to form with the toothed band a throat for guiding the margins of the work-pieces into contact with theteeth,

and being also inclined laterally to bite the side margin of the work-piece along a certain line thereof.

,8! The combination with a rotary platen having sharp teeth,- set around the periphery thereof, f for indenting, and thus gripping, ivorlnpiecesibytheir margins, of-a springfinger for holding the margins of the Workpieces against the teeth with pressure sufiicient, to cause theteeth to' indent the margins; said finger being rigidly supported above the printing line, outside of the field of the toothed-band, and being laterally ofiset to overlie such field; the finger being slit part-way along, the, line of its"lateral ofi set,

"the field of. the toothed band, and being laterally offset to overlie such field;'the finger being. slit. part-way along the line of its lateral oil'set, for'flexihility of such offset, and being offset forward and upward, along the line of the Sllt,,t0 form, with the toothed band, athroat ionguiding the work-pieces to gripping position. I

10. The combination with a rotary platen having sharpteeth, set aroundthe periphery thereof, for indenting, and thus gripping, workepieces 'by their margins, of 2a spring-finger for holding the margins of the work-pieces against, the teeth with pressure'su-iiicient to cause theteeth toindent the margins; said finger depending across the printing line .at the front of the platen and being inclined downward and rearward; abovethe printing line to ft'orm with thetoothcd'band a throat'for guiding'the margins of the work-pieces into contact with the-teeth, a chuteforming a; part of the spring for guiding the work-pieces ,i'orward and downwardinto contact with said downward and rearward incline, and an ear offset forward from the chute portion of the spring to serve as -a,gage for the side margin otthe Work-piece; the lower end of the earbeing turned out laterally to assure thatvthe top margin ota work-piece, which may have been fed beyondthe same in moving with the platcnto printing position, may passbaclninto the chute on movement of the platen in the opposite direction.

l'l/The combination with a platen, of means for determining a limited rotary movement thereof, comprising a plate having an axis around which it is movable, a stop for ,arresting such movement of the plate, and a loose connection between the plate and the platen; whereby the plate and wvhercby the plate and; platen may be turned together, in eitherdirectlon, untilthegplate is arrested by one of its stops, and'theplaten thereafterturned further in the same "directtion an extent ideterminedbythelooseness of the connection ofthe saine totherplate.

'13. The combination vwith aplaten, of means for determining .a rotary movement thereof, comprising aplate 'having'an: axis around which it isinovable, astopitor arresting such movement of the, plate, aloose connection between the plate and the platen; whereby the plate and platen'may be turned together untilthe plate'is arrested-by its stop, and the platenthereafterturned-Turther in the same direction an extent ideter- =mined by'the looseness o'fthe connection'of the same to the plate and.meansforrendering. the plate stop' ineffective, atwill.

14. The combination 'with a platen, of

means for determining a limited rotary .movement' thereof, comprising 1a--plate'*revoluble on the axis of the platen, a tooth -on 'theplate, a pair of stops, one'toqea chside of the tootli,for arresting"rotation'ot-the "plate-after a predetermined movement thereotin either direction, .a -pin-a-n-d's-lot -co-n- -nection between the platea-nd the platen whereby the plate and the-platen Vinayibe turned together, in either direction, ;until the tooth onthe plate strikes -onerof the stops, and thelalaten thereafterxturned further in the same direction an" extent-determined by the length ofthe slot,1a' carrier for the plate-stops, :an'dlmea-ns for moving the '15. The combination'with a plate-11' having two stenciling fields thereon, one iniad'vance of the other, of meansitor. determining't-he rotary movement of the platen, for stenciling in either field, and for bringing either field thereof into use, comprising-aplate having an axis around which'it ismova-ble, a: tooth on the plate, a; pair of stopsyonetto each side of thetoot-hftor arrestingrotation of the plate after a predetermined movement Y thereof in either direction, a: loose'connection between the plate and'the alaten,"whereby the plate and, platen maybe turned together,

in either. direction, in tone stenciling (held,

and the platen thereafter'turned"further in the same direction in such field an extent determined by the looseness of the connection of the platen to the plate, a carrier for the plate-stops, means for moving the carrier wit-h the stops to ineffective position to permit the platen to be turned to bring the other stenciling field into use, and another tooth on the plate adapted to co-operate with the stops on the carrier when the latter is again moved to effective position after interchange of stenciling fields.

16. The combination with a platen having two stencilling fields thereon, one in advance of the other, of means for determining the rotary movement of the platen, for stencilling in either field, and for bringing either field thereof into use, comprising a pair of detents connected to the platen, one for each stencilling field, a pair of stops, one on each side of the detent for the field in use for arresting the movement of the platen in either direction in such field, a carrier for the stops, and means for moving the carrier with the stops to ineffective position, to permit the platen to be turned to bring the detent for the other field into position for co-operation with the stops on the carrier.

17. In a typewriting machine, a. rotary platen, a plurality of strips of celluloid, or other material suitable as a stencilling ground, on the surface of the platen, and plates secured to the platen to hold the strips in place, and serving as gages for aligning the margins of the stencil cards when engaged thereby.

18. In a typevvriting machine, a rotary platen, a plurality of strips of celluloid, or other material suitable as a stencilling ground, on the surface of the platen, one in advance of the other, and plates secured to the platen between such strips and overlapping the edges of the strips to hold the latter to the platen.

19. In a typewriting machine, a rotary platen, a plurality of strips of'celluloid, or other material suitable as a stencilling ground, on the surface of the platen, one in advance of the other, and plates secured to the platen between such strips and at-opposite edges to overlap the edges of the strips to hold the latter to theplaten;

20. In a typewriting machine, a rotary platen, a strip of celluloid, or other material suitcble as a stencilling ground, on the surface of the platen, and a plate secured to the platen, extending longitudinally thereof and overlapping the edge of the strip to hold the latter to the platen; the edge of the plate being recessed to permit engagement of the edge of the strip by the operators finger for removal of the strip.

21. In a typewriting machine, a rotary platen, a plurality of strips of celluloid, or other material suitable as a stencilling ground, on the surface of the platen, one

in advance of the other, plate-s secured to the platen between such strips and overlapping the edges of the strips to hold the latter to the platen, sharp teeth, set in bands around the periphery of the platen at the ends of the strips and plates, for indenting andthus gripping the stencil cards by the side margins thereof, and spring fingers for holding the margins of the cards against the toothed bands with pressure sufficient to cause the teeth to indent the margins.

22. In a typewriting machine, a platen frame, a platen cylinder journaled in and extending substantially from one to the other of the side pieces of the platen frame,

and a short platen telescoped by the oylinder at an intermediate part of the latter.

23. In a typewriting machine, a platen frame, a platen cylinder journaled in and extending substantially from one to the other of the side pieces of the platen frame,

tudinally thereof, for engaging an edge of a a work-piece to assure proper positioning thereof preparatory to feeding the same into typing position and indenting the margins thereof.

25. In a typewriting machine, the combination with a revoluble platen having intermediate its ends two rings of teeth for indenting and thus gripping work-pieces by their marglns, of means to press the workpieces against such toothed rings, to cause such indenting, and a longitudinal gage on said platen to assure alignment of said workpieces preparatory to indentation while permitting adjustment thereof longitudinally of the platen. I I

26. In a typewriter, the combination of a rotary platen provided attwo portio-nson opposite sides of the middle with a wide zone or band composed of sharp teeth, which zones are spaced to engage the end portions of the usual stencil-member and which zones are each of a width to permit engagement of different widths of stencil-members within a relatively wide range of sizes, and a pair of spring fingers each arranged to press the end portion of the stencil against the toothed bands to emboss the work and cause interengagement, thereby to prevent slip of the stencil on turning the platen.

27. In a typewriter, the combination of a? rotary platen piovided at two portions on opposite Sides of the middle with a wide Zone or band composed of sharp teeth which zones are spaced to engage the end portions of the usual stencil-member and which zones are of a width to permit engagement of diffei'ent widths of stencil-men'ibeis within the relatively wide range of sizes, and a pair of spring fingers each arranged to" press the end. portions of work-pieces against the 10 toothed bands to einboss the workand cause interen gag'einent, thereby preventing slip of the stencils on turning the platen, said fingers being shiftabl'e along; said bands for engagement with the margins of different widths of stencil-members.

JESSE A. B. SMITH.

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