US1395458A - Typewriting-machine - Google Patents

Description

B. C. STICKNEY.

TYPEWRITING MACHINE.

APPLICATION FILED 0m30.191s.

Patented Nov. 1, 1921.

3 SHEETSVSHEET 1.

B. C, STICKNEY.

TYPEWRITING MACHINE.

APPLICATION FILED pcT.3o,191s.

Patented Nov. 1, 1921.

SSHEETSv-SHEET Z.

B. C. STICKNEY.

TYPEWRITNG MACHINE.

APPLICATION FILED OCT. 30, i919.

UNITED STATES PATENT OFFICE.

BURNHAM C. STICKNEY, 0F ELIZABETH, NEW JERSEY, ASSIGNOR T0 UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

p TYPEWRITING-MACHNE.

Specification of Letters Patent.

Patented N ov. 1, 1921.

Application led October 30, 1919. Serial No. 334,426.

To allwkom it may concern:

Be it known that I, BURNHAM C. STICK- NEY, a citizen of the United States, residing in Elizabeth, in the county of Union and State o f New Jersey, have invented cert-ain` new and useful Improvements in Typewriting-Machines, of 4which the following is a specification.

This invention relates to typewritingmachines, and more particularly to work-sheetfeeding and controlling mechanism for such machines.

In usin a typewriter to `write individual bills or orms on separate sheets, and to write ledger accounts or classified totals on another sheet, it is necessary to alternate the writing on one sheet with that on another or others. With a typewriter of the ordinary form, work of this nature would require insertion of thel same sheet in the machine each time that writing is to be effected thereon, thereby incurring waste of labor and time and liability of error.

According to the present invention, simple and efficient means have been provided, whereby Work of this nature may be effected by simple mechanism.`

The unitary laten may be and preferably is of considera le length, so as to accommodate a wide sheet, or two sheets of ordinary width side'by side. The platen may be actuated by finger-wheels onits axle, or by a suitable line-spacing mechanism, including a ratchet-Wheel mounted on the axle.

In the preferred manner of carrying out the invention, the feed-rolls opposite the left-hand half of the platen and those opposite the right-hand half of the platen are mounted independently of each other.

Provision may be made of means to release the feed-rolls from either half of the platen independently of the others. To this end, a feedJ-roll-relea'se shaft may be Vposltioned `below each of the halves of the unitary platen, so as to coperate with the springpressed arms supporting the feed-rolls, to release the feed-rolls when desired. Preferably, the feed-roll-release shafts are in alinement.

To enable the insertion or withdrawal of a single wide sheet, or of two narrow sheets` simultaneously, provision may be made of a finger-piece and means controlled thereby, whereby all of the feed-rolls may be renarrow sheets, side by side,

leased or permitted to return to their effective positions simultaneously.

Finger-pieces, individual to the feed-rollrelease shafts underlying the opposite portions of the platen, may be provided, as well as suitable means through which the fingerieces may actuate the corresponding shafts.

his feature is of particular value in placing on the platen, in that the sets of rolls may be released by the finger-pieces and that each set of rolls may be restored to normal position as soon as the corresponding work-sheet has been inserted. This feature may also beof value in connection with the adjustment of a sheet, already inserted, without affecting the adjustment of the other.

In case two work-sheets have been inserted so as to lie side by side on the platen, it may be desirable to feed both of said worksheets simultaneously, or either one independently of the other. For this purpose, provision may be made of a finger-piece movable to three positions, and means whereby said finger-piece, in one position, will be ineffective 'to release any of said feedrolls, but, when moved to either of the other positions, will effect release of the roll or rolls associated with the corresponding end of the platen. As herein disclosed, movement of the finger-piece' in one direction will effect rocking of the feed-roll-release shaft under one half of the platen, and movement of the finger-piece in the opposite direction will effect rocking of the other feed-roll-release shaft. Obviously, when the work-sheet opposite one end of the platen is released, actuation of the platen will be ineffective thereon, but may effect movement of the other work-sheet.

In order to prevent accidental displacement of a released work-sheet while the other is being fedby the platen, provision may be made ofv normally ineffective gripping or holding means, whereby movement of the three-position finger-piece to release one of said work-sheets will render the corresponding gripping or holding means effective to hold the released work-sheet against accidental displacement.

Suitable provisions for lost motion may also be made, so that, with the parts in their normal positions,v actuation of any of said fngerpieces may beeffected'without actuation of any of the others, thus avoiding unnecessary movement of parts.

Due to the use of a single or unitary platen, the, mechanism vis ,well adapted to feed wide sheets and fe'el simultaneously sheets placed side by side on said platen. This feature of construction also enables the use of a single line-spacing mechanism, instead of two line-space mechanisms, or of more complicated mechanism.

L )ther features and advantages will hereinafter appear.

` In the accompanying drawings,

Figure 1 is a front elevation of a platenframe of an Underwood front-strike typewritin machine, showing my invention applied t ereto.

' Fig. 2 is a plan view of the platen-frame in inverted position.

Fig. 3 is a sectional side elevation of the vstructure shown in Fig. 1, the parts being in their normal positions.

Fig. 4 is a View similar to Fig. .3, but

. showing'the left-hand feed-rolls released and the corresponding gripping device effective. Fig. 5 is a view similar to Fig. 3, showing the right-hand feed-rolls released and the corresponding gripping device effective.

Fig. 6 is a view similar to Fig. 3, showing the right-hand feed-rolls released by a fin er-piece individual thereto.

platen 1 of the usual type, preferably a wide platen, is rotatably mounted by means of an axle 2 in end frames I3 andi 4 of a; platen-frame, and may be rotated by means of iingerwvheels and 6, respectively, or by line-space mechanism including a ratchetwheel 7` mounted on said axle 2.

The work is held against the platen by means offrent feed-rolls 8 and rear feedrolls 9, which, inasmuch as the mechanism is intended for use in feeding two sheets side by side on the platen, are divided into two groups, one coperating with the lefthand portion, preferably half of the platen, and the other with the right-hand portion. The front and rear feed-rolls at either end of the platen are mounted on shafts 10 and 11, respectively, the shafts being carried. by levers 12, which are pressed upwardly by springs 13 secured to collars 14, fixed on shaft 15, on which said levers 12 are pivoted.

In order to release the right-hand and left-hand sets of feed-rolls independently, feed-rolllrelease shafts 16 are provided for each half of the platen, and are preferably in alinement. These release shafts may be formed in the usual manner by cutting away ortions on opposite sides thereof to form epressions 17 having flat bottoms against which the lower ends of the levers 12 rest when the parts are in normal position, as

. shown in Fig. 3e ,It will be noted that these depressions, which may or may not overlap, are herein disclosed as not` overlapping (Figs. 1 and 2), although the sections of shafts 16 are so taken that, in other figures (Fig. 5, for example), the appearance of overlapping is given.

In case two work-sheets are to be placed side by side on the laten, the feed-'rolls opposite either end o the platen may be released, a sheet Iinserted, and the feed-rolls returned to their normal positions. 'I'he second sheet may then be inserted in the same manner. In case the right-hand sheet is to be inserted, a finger-piece 18 is swung about its pivot from a position in contact with stop-pin 19 to a position in contact with stop-pinl 20. In this movement, a cam 21, connected to said finger-piece 18, is swung from the position shown in Fig. 2- to the position shown in Fig. 6. The cam 21 inA this movement acts against a hooked end 22 of link 23 to lift said link 23 and actuate an arm 24 connected therewith to swm the right-hand-release shaft 16 from the ig. 3 position to the Fi 5 position, thereby releasing the feed-ro 1s of the right-hand set, as shown-in Fig. 6. It will be noted (Fig.

sufficient to forcethe lower ends of the feedroll-supporting levers 12 from the flat hottoms of the depressions to the outer surface of the shaft, and that the springs 13 tend to return the rock-shaft to its normal position. Such return movement is prevented. howv9() 6) that the turning of the shaft 16 'is not ever, by the cam 21 which has assumed such a position that the pressure through link 23 1s exerted, directly against its;v pivot. In other words, the cam and link are substantially on a dead center, and the link is locked in its raised position. A pin 25, engaging in.

a slot 26 near the upper end of link 23,serves to hold the link in position to be actuated by said cam 2 1.

To insert a work-sheet for use on the left" hand art ofthe platen, a finger-piece 2i' at the le t of the platen-frame is depressed, and acts, through parts similar to those actuated by fin er-piece 18, to rock the left-hand release siaft 16 and thereby release the feedrolls of the left-hand set. It will be notedl that the finger-piece. 27, which is mounted inside the left-hand frame 3, is bentr forward midway of its length. The reason for this bending will be brought out hereinafter.

The release shafts 16, which are mounted at their outer ends in brackets 28 and at their inner ends ina common bracket 29, are provided near their inner ends with arms 30, having laterally-projecting pins 31, which constitute parts of the device for releasing both sets o rolls simultaneously. When this .result is desired, a finger-piece' 32A is moved from its Fig. 3 position, determined by a stop-pin 33, to a position determined by a stop-pm 34, and this motion is transmitted.

by means of a cam 35 in contact with the hooked upper end 36 of a link 37, to ysaid link, and, by means of an arm 38, fixed on shaft 39, to said shaft.

Mounted on said shaft 39 are two arms 40, which may be mounted on a sleeve fixed to the shaft, said arms, when swun downwardly, en aging pins 31 and there y rocking both s afts '16 and releasing all of the feed-rolls This mechanism, which enables the releaseof all of the feed-rolls by a single finger-piece, is of particular value whenever a wide sheet is to be inserted.4 I-t willv be seen thatwhen finger-piece 32 is in its actuated position, the end of cam 35 will engage the hooked end 36 of link 37 in suchva manner as to lock link 37 in raised position.

When it is desired to advance the ri hthand work-sheet without advancing the gifthand sheet, a finger-piece 41 isswung rearwardly to the Fig. 5 position from its normal position (Fig. 3), in which itis held by a pin 42, carried bya spring 43, mounted on the horizontal arm of finger-piece 41, engaging the middle one of three depressions 442 provided for this purpose. It will be evldent that when finger-piece 41 reaches its rearward position, pin 42 will snap into the lower depression 44 to maintain the fingerpiece 41 in this position. This actuation of finger-piece 41 will also serve to depress link u 45, to swing an arm 46 and thereby rock a shaft 47, 4to swing an arm 48, to which is pivoted a link 49, having an elongated slot, into kwhich projects a pin 50, carried by an arm 51 on the right-hand release shaft 16.

Said pin 50 is normally at the right-hand end of the elongated slot, as seen in Fig. 3, so that rearward movement of finger-piece 41, as described,will rock shaft 16 in counterclockwise direction and throw off or release the right-hand set of feed-rolls, as shown in Fig. 5.

When finger-piece 41 is swung to its forward position (Fig. 4), shaft 47 will be rocked in clockwise direction, and finger 52, at the left-hand end of shaft 47 lwill press downward on a pin 53, carried by any arm 54 on the left-hand release shaft, and actuate the same to release the corresponding feedrolls. Atthe same time, link 49 will be moved idly with reference to pin 50, andthe right-hand release shaft will remain in its normal position. It will be noted, in this connection, that when shaft 47 is turned in` i c'ounterclockwise direction, finger 52 is release shaft 16 is moved away from pin 53,.and the left-'hand permitted to remain in its normal position. H

Provision Ais 'also made ofi-means controlled by finger-piece 41 for gripping the work-sheet released by the operation' of said finger-piece in one direction or the other.. For this purpose, abar or plate 55, forming a clamp member, is` placed adjacent the platen, so that work-sheetsfmay pass thereover in leaving the, platen, andv is secured at ends to the end plates of the platenframe in any suitable manner.

Provision is also made of nested bails56 completely )across the platen-frame, 'it is necessary to bend finger-piece 27 4forwardly toavoid interferencey with the bails.l

The outer lbail 56 is.- urged to :ineffective gripping position by means of a spring 60, at the right of the machine, engaging a pin 61, carried by an arm 62,"which is or may be -part of the bail. At the left of the machine,

a spring 63 engages a pin 64 on an arm 65 of bail 57, and urges the same to effective position.

Control of bails 56 and 57 by finger-piece 41 is effected by means of a pinl 66, which overlies and cooperates with the upper edges of cam-arms 67 and 68 at the Iright-hand ends of bails 56 and 57, respectively. Camarm 67 is provided with a low portion 69 near its end, so that'it may rise under action of spring 60, during movement of fingerpiece 41, to its rearward position (Fig. 5), and with acurved highmiddle portion 70, so that substantially no movement of arm 67 and bail 56 will' occur during movement of the finger-piece from its middle (Fig. 3) to its forward position (Fig. 4), orvice versa.

Cam-arm 68 is provi-ded with a high end portion 71 and a low middle portion 72, so that movement of finger-piece41 from its middle position (Fig. 3) to its rearward position (Fig. 5), and viceversa. will have substantially no effect on the position of the inner bailv 57, butforward .movement of finger-piece 4 1 from its Fig-,3 .position to its Fig. 4 position will effect release of the inner bail 57, which will be moved to effective position by means of the spring 63.

It will bes-een that when both bails 56 and 57 are positioned as shown in Fig. 3, the high or elevated portions and 71 of camarms 67 and '68, respectively, are substantially concentric with ther pivot of fingerpiece 41.

When thevarious finger-pieces are in the positions shown in Fig. 3, rotation of the platen willefect simultaneous feeding ofl two work-sheets carried thereby. If, however, finger-piece 41 is moved to the rear (Fig. 5), the right-hand feed-rolls will be released and the spring-fingers '58 of the outer bail 56 will press the right-hand worksheet against the clamp bar 55, to prevent it being moved by the platen or otherwise displaced. lMovement of finger-piece 41 to its forward position (Fig. 4f) will releasethe left-hand work-sheet and cause the same to be held, by the spring-fingers 58 of the inner bail 57, against movement by the platen. This mechanism, therefore, provides means whereby either one of Vthe work-sheets may be fed by the platen and the other held against movement.

Variations may be resorted to Within the scope of the invention, and portions of the im rovements may be used without others. g aving thus described my invention, I claim:

1. In a typewriting machine, in combination, a .revoluble laten, two feed-rolls cooperating therewith, a finger-piece, and means whereby movement of said fingerpiece from its central position to either one of its limiting positions will effect the withdrawal of one or the other of said feed-rolls from the platen, in accordance with the direction of movement of said finger-piece.

2. In a typewriting machine, in combination, a revoluble platen, two feed-rolls coperating therewith, a finger-piece, means whereby movement of said finger-piece from its central position to either one of its limiting positions will effect Vthe withdrawal of one or the other of said feed-rolls from the platen, in accordance with the direction of movement of said finger-piece, and means for withdrawing said feed-rolls simultaneously,

3. In a typewriting machine, in combination, a revoluble platen, two feed-rolls cooperating'therewith, a finger-piece, means whereby movement of said finger-piece from its central position to either one of its limiting positions will effect the withdrawal of one or the other of said feed-rolls from the platen, a second finger-piece, and means whereby actuation of said second fingerpiece will effectconcomitant withdrawal of both of said feed-rolls.

4. In a typewriting machine, in combination, a revoluble platen, two feed-rolls cooperating with different parts of said platen longitudinally thereof, so that each may cooperate with one of two sheets placed side by side on said platen, a finger-piece, means controlled by tively releasing said rolls, a normally ineffective gripping device adjacent each of saidv feed-rolls adapted, when effective, to prevent movement of the gripped portions of said sheet, and means for rendering said gripping devices effective.

' tion, a revoluble 5. In a typewriting machine, in combinalaten, two feed-rolls cooperatin with di erent parts of said platen 'longitudinally thereof, so that each may cosaid finger-piece for selec-' operate with one of two sheets placed side by side on said platen, a finger-piece, means sheet, and means whereby movement of said.

finger-piece to release either of said feedrolls will render effective the gripping device adjacent the roll released.

` 6. In a typewriting machine, in combina-v v tion, a revoluble laten, two feed-rolls cooperating with di erent parts of said platen longitudinally thereof, so that each may cooperate with one of two sheets'placedside by side on said platen, a finger-piece, means controlled by said'finger-piece for selectively releasing said rolls, a normally ineffective gripping device adjacent each of said feedrolls adapted, when effective, to prevent movement of the gripped portions of said sheet, means for rendering said gripping devices effective, finger-pieces individual vto said feed-rolls, and means whereby actuation of each of said individual fin er-pieces willl effect release of the correspon ing feedrol 7. In a typewriting machine, in combination, a revoluble platen, two feed-rolls cooperatin with different parts of said platen longitudlnally thereof, a. releasing device including a finger-piece for each of said feedrolls, a work-sheet gripping device adjacent' each of said rolls, a. third finger-piece, 'and means controlled by said third finger-piece for selectively rendering said gripping devices effective. i

8. In a typewriting machine, in combination, a unitary revoluble platen, a set of feed-rolls yieldingly pressed aga-inst the right-hand end portion of said platen, a second set yieldingly pressed against the'lefthand end portion of saidl platen, means iiicluding a finger-piece to release said firstmentioned set, means including a second finger-piece to release the second set, means including a third finger-piece to release either the one or the. other set of feed-rolls in accordance with the direction in which said third finger-piece is moved, and means including a fourth fingeriece for withdrawing both sets of fee -rolls simultaneously.

9. In a typewriting machine, in combination, a revoluble laten adapted' to receive two work-sheets side by side, a set of feedrolls to coperate with each of said sheets, means to release either set of said feed-rolls at will, sheet-clamping means, and means whereby actuation of said releasing means to release one set of feed-rolls will actuate the clamping means associated with that set to clamp the sheet released, against movement when the platen is advanced.

I 'p Leonesa 10. In a typewriting machine, in combination, a revo uble platen, a clamp' member adjacent the surface of said platen and exl tending longitudinally thereof, two co-axial bails extending longitudinally of the and clampin fingers on said bails a apted toibo presse against said member in accordance with the bail actuated.

glaten 11. In a `typewriting machine, in combination, avunitary revoluble platen, feed-rolls arranged longitudinally thereof, means including pivoted arms for supporting said feed-rolls in co rative relation with the platen, two cam' afts longitudinally of the platen constructed and arranged so that rocking of either of said shafts will actuate the arms corresponding to certain of said feed-rolls to release the same, a manually movable member, and means effective when said member is moved 'in one direction' to .l rock only one of said cam shafts and effective whensaid member is moved in the opposite direction to rock only the other cam shaft.

12. In a typewriting machine, in combinal tion, a platen, two sets of feed-rolls arranged to engage diil'erent sections longitudinally thereof, means to release each set of feedrolls -including a camshaft for each of said sets, said cam shafts being alined with each other, a finger-piece, and means whereby the feed-rolls opposite either section may be released in accordance with the direction in which said Vfinger-piece is moved.

13. In -a typewriting machine, in combilation, a'revoluble platen, a .clamp member adjacent the surface of said platen and extending longitudinally thereof, two co-axial bails extending longitudinally of the platen, a clamping finger on each of said bails to co erate with said member, means ur ing eac of said bails to press the correspon ing clamping finger against said member, and controlling means for said bails, comprising a linger-piece and a cam member on each of said bails co-acting with said finger-piece,

said cam members being so formed that both.

of said bails will be in ineffective position, or either' one in eifective and the other in ineiieetive position, dependent upon the position of said linger-piece.

14. In a t pewriting machine, in combinaliible platen, feed-rolls arranged i p pivotedl arms, for supporting said feedro ls in coperative relation two cam shafts'in alinement longitu inally of said platen constructed and arranged so that rocking of either of said shafts will actuate the arms corresponding to certain of said rolls to release the same, an arm mounted on each of said cam shaftsa rockable member, and means whereby movement in either direction of said rockable member from its normal position will actuate one of with said laten,

said arms and' the corresponding shaft without actuating the other with the direction able member.

l5. In a typewriting machine, in combination, a revoluble platen, feed-rolls arranged longitudinally thereof, means including pivoted arms, for supporting saidvfeed-rolls in coperative relation with said platen, two cam shafts' in alinement` longitudinally of said platen constructed and arranged so that rocking of either of said shafts will actuate the arms corresponding to certain of said rolls to release the same, a rockable member, and means ei'ective when said member is rocked in one-direction to rock only one of said cam shafts, and effective when said member is rocked in the opposite direction to rock the other cam shaft 1n the same direction as the first cam shaft.

3. In a typewriting machine, in combination, a revoluble platen, two set 0f feedrolls yieldingly pressed against said platen, a cam shaft for controlling each set ofv said feed-rolls, means whereby actuation of eachl of said cam shafts will effect release of the corresponding feed-rolls, a y finger-piece, and means controlled by said finger-piece whereby movement ofy said finger-piece in one direction will rock one of said' shafts in one direction andrelease the corres nding set of rolls, and movement of said arm m accordance ofv movement of said rock- ,i

plece in the opposite direction will rock the,

other shaft and of rolls.

1:7. In a typewritingmachine, in combiplaten, a clamp member release the corresponding set said bails will be held in ineii'ective positionV when said lfinger-piece is in its normal position, and that movement Aof the finger-piece to a second position will render one of said bails effective, and that movement of the finger-piece to a third position will render the second bail effective and the first bail ineii'ective.

18. In a typewriting machine, in combination, a unitary platen, feed-rolls arranged lin two sets, so that each set may coperate with one of two work-sheets, placed side by side, on said platen, to enable simultaneous feedplaten and extendlng longiv ing of said work-sheets, and means for re- A leasing either set of feed-rolls and holding the corresponding work-sheet against movement whereby either work-sheet may be fed with the platen independently of the other.

$19.. In a typewriting machine, in combination, 'a unitary platen, means for maintaining two work-sheets, placed side by'v side, on said platen in coperatiye relation with said platen, to be fed thereby, and means for releasing either of said work-sheets from said maintaining means and holding the released sheet to 'prevent movement thereof when the platen is rotated.

20; In a typewriting machine, in combination, al unitary revoluble platen, means for maintaining a pluralityof sheets, placed side by side, in coperative relation with said platen, and vmeans for selectively releasing said sheets from said maintaining means and `holding said selected sheets against movement withrthe platen when the latter is rotated.

21. In a typewriting machine, in combination, a unitary platen, means for maintaining a plurality of work-sheets, placed side by side, Ain cooperative relation with said platen, work-sheet gripping devices ad- 'jacent said platen, means or selectively remi` leasing said work-sheets'from said maintaining means, and means whereby operation of said releasing means, to release a worksheet, will render one of said ripping devices ei'ective on the released s eet.

22. In a typewriting machine, in combination, a revoluble platen, a plurality of sets of feed-rolls urged against different portions of said platen longitudinally thereof to support a plurality of work-sheets side byv side on saidplaten, a work-sheet gripping device opposite each of said sets, a fingerpiece, means actuated by said finger-piece for selectively releasing said sets of feedrolls and concomitantly rendering the corresponding gripping devices effective, finger-pieces individual to said sets of feedrolls, means actuated by said individual {inger-pieces for releasing the corresponding sets, an additional finger-piece, and means actuated by said additional finger-piece for releasing all of said sets. simultaneously. i

23, I n a typewriting machine, in combination, a revoluble platen, two setsv of feedro`l1s' yieldingly pressed against different portions of said platen longitudinally thereof, gripping devices mounted adjacent said platen, a finger-piece, means controlled by said finger-piece when moved to one position to release one set of rolls and render the corresponding gripping device efective, and when moved to another position to release the other set of feed-rolls and render the corresponding gripping device effective, finger- -pieces individual to said sets of feed-rolls, and means whereby actuation of either of said individual fing'erieces will effect release of the correspon ing set of feed-rolls.

24. In a typewriting machine, in combination, a revoluble platen, a front set and 65 a rear set of feed-rolls, means to support said sets of feed-rolls, comprising a pair of pivoted levers for each of said sets, and means to release Vsaid rolls, comprising a feed-roll-release shaft, an arm at one end of said shaft, a link pivoted to said arm, and a cam for actuating said link, the contact between the link and the cam being carried to a dead-center position with reference to said cam, so that the latter will lock the link in operated position.

25. In a typewriting machine, in combination, a revoluble platen, a set of feedrolls yieldingly supported against each half of the platen to maintain a work-sheet thereagainst, a gripping device adjacent each half'of the platen to receive a worksheet advanced therefrom, a finger-piece, means operable by said finger-piece' to release one or the other of said feed-roll sets in accordance with the direction of'movement of said finger-piece, and means operated by said finger-piece for controllingv said gripping devices, comprising av pin on said finger-piece, a cam-arm connected to each of said gripping devices,-and means urging each of said cam-arms in a'direction to render the corresponding gripping device efective, said cam-arms being provided with elevations and depressions to co`- operate with said pin in determining the effectiveness of said gripping devices for different positions of the finger-piece.

26. In a typewriting machine, in combination, a revoluble platen, a set of Vfeed-rolls to coperate with each end of the platen, 100 and means for releasing each set of feedrollsindependently of the other, including a feed-roll-release shaft adjacent each end of the platen, an arm on each shaft, an opera'ting shaft parallel to said release 105 shafts, a finger onv said operating shaft to engage the arm on one of said release' shafts, an arm on said operating shaft, and a link pivoted to said last-mentioned arm and having av pin-and-slot connection with the 110 arm on the other of said release shafts, whereby movement of said operating shaft in one ldirection will turn one of said release Shafts in a certain direction, and movement of said operating shaft in the 115 opposite direction will cause a movement of the other release shaft in the same direction as the frst was moved by rotation of the operating shaft in the opposite direction.

2.7. In a typewriting machine,y in combi- 120 nation, a revoluble platen, a bar positioned adgacent said platen to receive work fed therefrom, a bail pivoted -to swing about an axls parallel'to that of the platen, springfingers on sald bail to engage a work-sheet 12b and press the same against said bar, and means yieldlngly urging said bail to a position to` cause said fingers to coperate with said bar.

28. In a typewriting machine, in combi- 130 nation, a unitary cylindrical platen adapted to receive two work-sheets, side by slde thereon, means, associated with said platen,

to enable said work-sheets to be fed thereby, means for selectively determining,r Whether one or both of said sheets is to be. fed by said platen, and means to prevent accidental movement of the sheet which is not to be fed.

29. In a typewriting machine, in combination, a unitary cylindrical platen adapted to receive two Work-sheets, side by side thereon, means, associated with said platen, to enable said work-Sheets to be fed thereby, a finger-piece, and means whereby the feeding of one or both of said sheets by the platen may be selectively determined by said linger-piece.

30. In a tvnewriting' machine, in combination, a unitary revoluble platen,l a set of feed-rolls yieldingly pressed against the right-hand end portion of said platen, a second set of feed-rolls yieldingly pressed against the left-hand end port1on of said platen, means including a finger-piece to release said right-hand set of feed-rolls, means including a second finger-piece to release said left-hand set of feed-rolls, and means including a third finger-piece to release either the one or the other set of feed-rolls in accordance With the direction in which said third finger-piece is moved.

BURNHAM C. STICKNEY.

Witnesses:

EDITH B. LIBBEY, JENNIE P. THORNE.

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