US945893A

US945893A - Type-writing machine.

Info

Publication number: US945893A
Application number: US40481407A
Authority: US
Inventors: Oscar Woodward
Original assignee: Wyckoff Seamans & Benedict
Current assignee: Wyckoff Seamans & Benedict
Priority date: 1907-12-02
Filing date: 1907-12-02
Publication date: 1910-01-11
Anticipated expiration: 1927-01-11

Description

0. WOODWARD. TYPE WRITING MACHINE. APPLICATION FILED mm. 2, 1907.

n 1 9 1 L 1 m. J 0 m. M a P 1 T E E H s s T B E H s 4 'Ili lllllllll |NVENTUR= 1-15 ATTORNEY WITNESSES:

0. woonwim). TYPE WRITING MACHINE.

m m. mm 9M N N L mm W w m E m 8 m H O. WOODWARD.

TYPE WRITING MACHINE.

APPLICATION FILED D20. 2, 1901.

Patented Jan. 11,1910.

4 SHEETSBHEET 3.

' WITNESEEE': NVENTEIR 0. W'OODWARD.

TYPE WRITING MACHINE.

APPLICATION FILED DBO. 2,1907.

Patented Jan. 11,1910.

SHEETS-$3321 4.

' NrrED STATES Ariana onion.

OSCAR woonwaan, oi MONTGLAIR, NEW JERSEY, ASSIGNOR, TO wYcKorF, SEAMANS & BENEDICT, or ILION, NEW YORK, A conroaarron or new YORK.

TYPE-WRITING MACHINE.

1 Specification of Letters Patent.

Patented Jan. 11, 1910.

To all whom it may concern."

Be it known that I, OSCAR WooDWARD, a citizen of the United States, and resident of Montclair, in the county of Essex and State of New'Jersey, have invented certalnnew and useful Improvements in Type-Writing Machines, of which the following is a spamfication.

My invention relates to typewrlting machines and more particularly to paper feeding and controlling devices and the ob ect of said invention isto provide improved and efficient means of the character specified.

To the above and. other ends which will hereinafter appear, my invention consists of the features of construction, arrangements of parts and combinations of devices to be hereinafter set forth and particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate corresponding parts in the various views, Figure 1 is a front elevation of the platen and platen frame equipped with the devices of my invention. Fig. 2 is a top plan view of the sa-me. Fig. 3 is an enlarged detail rear elevation showing one end portion of the platen and its associated parts. Fig. 4 is an enlarged transverse sectional view of the construction. Fig. 5 is a view corresponding to Fig. =1 except that the parts are shown differently disposed. Fig. 6 is a detail detached view partly in section showing the joint between the feed roll hanger and its support.

I have shown my invention embodied in a front-strike typewriting machine in which the types strike against the front face of the platen on a dotted line 00, though it should be understood that from certain aspects of the invention the'devices may be embodied in various styles of typewriting machines.

The platen frame comprises end plates 1 connected by a cross bar 2 and a connecting rod 3. The end plates areprovided with bearing openings for ashaft 4 on which a rotative platen 5 is mounted. -A paper table 6 is supported on bracket arms 7 turned at their lower ends as indicated at 8 around the cross .rod 3. A supporting rod or bar 9 has cylindrical bearings 10 at the ends thereof which are received in bearingnopenings in the end plates 1, the rod being supported above the platen near the rear side thereof and in a position where the paper may be directed by the margin feed rollers and paper fingers (to be hereinafter described) over the bar after the paper leaves the print-.

ing line. The supporting rod is angular in cross section and has supports 11 mounted thereon. These supports are apertured' to conform to the cross section of the supporting rod on three sides as shown in Figs. 4 and 5 and a pin 12 extends across the opening between the side walls thereof in order to prevent the removal of the supports from the supporting rod. This pin 12 co-acts with a looped or recessed ortion 13 (Fig. 3) of a flat spring which cars at its free ends 14 against the bottom face or side of the supporting rod in order to form a frictional means for retaining the support in the position to which it may be adjusted along the supporting rod. There are two of these supports provided, one for'use near each end of the platen but as they are the same in construction the description of one applies for both and but one will be described. The support is-provided with a finger piece 15 by which it may be adjusted along the supporting rod and a forwardly extending arm 16 projects from the support.

This arm is recessed at one side thereof as indicated at 17 in Fig. 6 for cooperation with the corresponding recessed portion 18 of a hanger 19. The arm 16 at the recessed portion thereof is provided with a projection 20 which is received in a recess 21 in the hanger 19 (see Figs. 4, 5 and 6). A shouldered screw pivot 22 connects the hanger to the supporting arm 16 and the construction is such as to afford a limited pivotal movement of the hanger 19 on the supporting arm'16. A leaf spring 23 is secured at one end to the support by the finger piece 15, the opposite or free end of the spring bearing against the upper edge of the hanger 19 and forcin the free end thereof toward the platen. The forwardly extending end of the hanger is formed with an inwardly extending off-set projection 24;

formed at its inner ends witha rearwardly extending portion 25 anda forwardly extending portion 26. A-pivot 27 extends between the hanger 19 and the forwardly extending projection 26 and constitutes a bearing for a margin feed roller 28 maintained against axial movement on its pivot by spacing sleeves.29. The rearwardly extending projection 25 with the arm of the hanger 19 forms a support fora pivot 30 for a sheet the platen frame.

the cam slot and the parts is such that when shown in Fig. 4 the supporting rod 9 is dependent movement between the parts is move the supports 11 to the position shown pressure against the platen. An independmetal paper finger 31 which extends forwardly and downwardly beneath the margin feed roller and receives an independent spring pressure against the platen .by a coiled spring 32 connected at one end to the off-set 24 and bearing at its opposite end. against the paper finger as shown in Fig. 4. The paper finger 1s apertured at 33 to receive the margin feed roller and enable it to bear against the platen or the paper thereon. The lower end of the paper finger extends in front of and overlaps a platenscale 34. t v

The right-hand end ofthe supporting rod 9 has a rearwardly extending crank arm 35 (see Figs. 4 and 5 secured thereto by crews 36. The rear en of this crank arin carries a shouldered screw or in 37 which projects laterally therefrom and is received-in a cam slot 38 in a device 39 pivoted' on a shouldered screw 40 to the right-handend plate 1 of .lhe' ivcte'd device 39 is,

provided at its u per en with a finger piece 41 by which the evice may be turned on its pivot. Each end of the cam slot 38 is ormed with a slight depression 42 for cooperation with the pin or screw 37 when the device 39 is moved to the limit ofits movement either forwardly or rearwardly as shown in Figs. 4 and 5. The disposition of the device 39 is in the forward position turned on its longitudinal axis so as to in said figure and the margin feed rollers 28 are maintained against the platen or the paper thereon; the springs 23 at this time exertin a pressure a ainst the hangers to maintain the margin eed rollers by spring ent spring pressure is at this time applied by the springs 32 to the paper fingers to maintain them incontact with theplaten or the paper thereon. By reason of the fact that the pin or screw 37 is' seated in the rearmost depression 42 when the parts are disposed as shown in Fig. 4, the sup orting rod 9 and the supports 11 will be loc ed'or maintained against rotative movement.-, \Vhen the finger piece 41 is moved to the rearmost position shown in Fig. 5 the supporting rod will be turned on its longitudinal axis tocarry both ofthe ban ers and the margin feed rollers carried t ereby together with the upper ends of the paper fingers away from or out of 005 'erative relation with the platen, the limited independent movementof the hangers relatively to the supporting arm 16 being effective to cause the hangers to move with the supports after a slight intaken up. This movement of the parts relieves-or releases the pressure of the margin feed' rollers and paper fingers on the face i hanger arms 55 is a eased position shown in Fi 5 by the en-, I

gagement of the pin 37 in pression 42 of the cam'slot.

Angular brackets .43 are securedto or form dpart of the cross bar 2, each bracket exten i a release or rock shaft 45 mounted at its ends in bearing openings in the end lates 1 of the platen frame. One of these rackets is locatedneareach end of the platen and an ofi-set portion 46 (see Fi arm 47 is secured to each bracket-by s rews 48. Each arm 47 extends forwardly beneath the platen and is curved at around .a pin 49 (Fig. 4) projectin between ears 50 secured to the bottom of a paper apron .51. The-spring arms 47 thus constitute a-resilient support for the paper apron near each end'thereof, the arms tending to force the forward end portion of the aper apron into contact with the platen as s -nwn in Fig. 4. Pivoted to the corner of each of 'the angular brackets 43 by a shouldered scre pivot 52 is a three-arm levercomprising an upwardly extending arm 53, a downwardly extending arm 54 and a -forwardly extending hanger arm 55. These arms may be formedxof a single piece. or the arm 54 of each three-arm or angular lever may be formed of a separate piece secured to the arm 53 by a screw 56. The forward end of each arm55' is pivoted at 57 to a rigid arm or one iece feed roll carrier or yoke piece 58., T ese yoke pieces extend transversel of the platen and fore and aft of the mac ine'and are formed at their forward and rear endswith bearings for shafts 59 and 60 respectively of the forward and rear feed ,

lOllers

61 and 62 respectively. The parallel shafts 59..and 60 are situated one near the front of the platen and the other for the main. aper feed'rollersS'zZ near the rear side oft e. platen where the paper is introduced into the machine. Thepaper apron is apertured at 63 to permit the feed rollers 61 to extend therethrough and bear against the platen. or the paper thereon. In

t e forward de-' rearwardly from the cross bar and then upwardlyto form a bearing 44 for.

3) of a spring its forward end a like manner the rear portion of the paper apron is apertured at 64 to enable the rear set of feed rollers 62 to extend therethrough and into contact with the platen.

It; will be seen that the pivots 57 which unite the hanger arms 55 with the yoke pieces 58 are located about centrally between the two sets of feedrollers or about centrally in'the lengths of the yoke pieces and that spring pressure Yap l ied indirectly to the but equally distributed on both sets of feedrollers. Pressure is applied to the angular levers 5354 55 by *springs 65, eachconnected at one end to the lower arm 54- 'of the associated lever by a screw 66 and at the opposite end to a bracket 67 attached to the associated angular bracket 43 by a screw 68. The tensionof the springs 65 is thus exerted through the angular three arm levers to apply their pressure to the forward and rear sets of feed rollers. The upwardly extending arms 53 of the angular levers extend into the paths of projections or crank arms 69 on the release shaft 45, so that a forward movement of the projections 69'simultaneously turns both of the angular levers on their pivots 52, thereby moving them against the pressure of their springs 65 and moving both sets of feed rollers out of contact' with the platen.

From an inspection of Figs. 1, 4 and 5 it will be seen that the upper edge of the cross bar 2 of the platen frame is provided near each end thereof with a cut-out or depression 70. An adjustable plate 71 is secured to the front face of a cross bar 2 at each cut-out therein. Each plate is slotted vertically at 7 2 for the reception of a guide pin 73 which projects from the front face of the cross bar. The slot also receives a screw 74 which extends through the cross bar and cotiperates with anut 75 at the forward end thereof,

the nut bearing against the plate to secure it in the positlon to which it may be adjusted on the cross bar. The upper edge of each plate constitutes a contact against which the associated yoke piece 58 is adapted to bear when the feed rollers are released as shown in Fig. 5. In this figure it will be seen that the yoke. pieces bear against the adjustable contact plates forward of the pivotal connections 57 between the yoke pieces and their hanger arms 55 so that as the parts are moved to the positions shown in Fig. 5 the yoke pieces with both sets of feed rollers will move away from the platen until the yoke pieces bear against the contact plates or stops 71 when further movement of the forward set of feed rollers away from the platen is arrested though the rear set of feed rollers may continue its movement; the yoke pieces turning onthe pivots 57 during a further movement of the'parts.

The platen scale 34 hereinbefore referred to is provided at.its ends with downwardly extending arms 76 pivoted at their lower ends on pivot screws 77 carried in bearings on brackets 78 secure d by screws 79 to the front cross bar 2. Each of the screws 79 is received in an upright slot 80 in the foot' piece of the bracket as is a guide pin 81 which projects from the front face of the cross bar. A washer 82 is interposed between the head of the screw and the foot piece of the bracket in order to clamp the bracket in its adjusted position. By these means the brackets-78 may be lowered or elevated at will to adjust the bearinqs to effect an up and down adjustment of the platen scale. The pivot bearing screws 77 may be adjusted axially to effect a longitudinal adjustment of the platen scale. Each of the brackets 78 carries an inwardly projecting arm 83 to which one end of a leaf springs84 is-secured by rivets 85, the free end of each leaf spring bearing against'the bottom edge of the platen scale to force it toward the platen as shown in Figs. 1, 4 and 5. From this it will be seen that the platen scale is supported on the platen frame independently of the paper apron and that spring pressure is applied to the platen scale independently to the paper apron and that the

feed rollers

61 and 62 may be moved into and out of co- 0 erative relation with the platen without.

a ecting the slight spring pressure maintained on the paper apron and platen scale. The rock shaft 45 is provided at one end with a crank arm. 86 which terminates in a finger piece 87 and by means of which control of the rock shaft is afforded. A coiled spring 88 surrounds the rock shaft near one end thereof as shown in Fig. 3, one end of the spring being connected to the crank arm and the other end to the left-hand end plate 1 of the platen frame in order to restore the rock shaft 45 to normal position. A screw stop89 projects from the inner face of the associated end plate of the platen frame and cotiperates with an outwardly extending arm or stop 90 formed on the crank arm 86 in order to limit the movement of the crank arm and the rock shaft backto normal position.

From an inspection of Fig. 3 it will be seen that hanger arms 91 are provided with bearings 92 which loosely surround the rock shaft 45, one of these arms being provided near each of the projections 69. The hanger arms 91 extend downwardly and forwardly and they are riveted at 93 to a cross bar 94 apertured in the present instance at four points in the length thereof as indicated at 95. Spring members 96 are riveted centrally bar and each of these members is formed of resilient metal and is substantially U-shaped, the upwardly extending ends 98 thereof projecting through the cut-outs or apertures 95 in the cross bar and projecting toward the platen and constituting stops for cotiperation with the leading edge of the paper. It will be seen that these stops are situated beneath the main paper feed roller 62 and pass through openings 98 in the paper apron (Fig. 3) and when in cotiperative relation with the platen as shown in Fig.- 5 are adapted to co-act with the leading edge of the paper ato arrest and s uare it when the feed rollers are thrown o The bearings'92 for the hangers 91 of the leading edge stops are each provided with an outwardly extending pin 99 (Fig. 3) which projects into a slot or aperture 100-in the hub of that applied in the length thereof at 97 to the cross of the associated crank arm 69 fixed on the rock shaft 45. A coiled springlOl surrounds the rock shaft 45 near each of the hangers 91 and is connected at one end to the associated hanger 91 and at its opposite end to a screw 102 on the rock shaft. The pressure of the springs 101 is exerted to normally maintain a fixed relation between the hangers 91 and the rock shaft 45 and so that the pins 99 will bear against one wall of the slot 100 in which it is received as indicated in Fig. 3 but will, nevertheless, afiord a movement of the rock shaft independently of the hanger arms 91 when the leading edge stops 98 are thrown into contact with the platen. By this construction the first portion of the movement of the finger piece 87, from the position shown in Fig. 4 to that indicated in Fig. 5, is to move the leading edge stops into contact with the platen and this is effected prior to the engagement of the crank arms 69 with the lever arms 53, or in other words, the leading edge stops are moved into engagement with the platen before the feed rollers start to move away from the platen.

Durin the movement of the parts just described a fixed relation is maintained between the hanger arms 91 and the rock shaft. \Vhen, however, a further rearward movement is given to the finger piece 87 the angular levers 5354-55 will be turned on their pivots to move the feed rollers out of cooperative relation with the '-platen and during this movement of the parts the leading edge stops will be maintained in contact with the platen and the rock shaft 45 will move independently of the hanger arms 91 by reason of the pin and slot connection 99100 between the hanger arms and the rock shaft. When pressure is released on the finger piece 87 the feed rollers move back to en aging position or into contact with the platen or the paper thereon before the leadin edge stops are withdrawn from contact w1th the. platen so that there is no liability of the paper, which is supported by the leading edge stops, being displaced from its adjusted position. This retention of the leading edge stops in contact with the platen during the rengagement of the feed rollers is likewise due to the independent movement between the rock shaft 45 and the hangers 91 and also to the independent pressure of the springs 101 on the hangers. By reason of the spring or resiliency of the members 96, the leading edge stops will bear but lightly against the face' of the platen and any undue pressure of the cross bar 94 toward the platen will deflect the members 96 against their spring pressure.

One end of the rock shaft 45 has secured .thereto a detent 103, which, when the finger iece 87 is moved rearwardly, to release the eed rollers and interpose the leading edge stops into the path of the paper, the detent will be brought into cooperation with the teeth of the line spacing ratchet wheel 104 secured to one end of the platen. This not only limits the movements of the finger piece.

1. In a typewriting machine, the combination of a rotative platen, a supporting rod pivoted on its longitudinal axis and over which the paper is directed, a supporting arm adjustable along said sup orting rod, a rigid hanger pivoted to said supporting arm, means on said supporting arm and hanger for limiting the pivotal movement of the hanger on the supporting arm, a paper feeding device carried by said hanger, and hand controlled means for turning said rod to throw the paper feeding device into and out of cooperation with the platen and for holding the rod in either of such positions.

2. 'In a typewritin machine, the combination of a rotative pIaten, a supporting rod pivoted on its longitudinal axis and over which the paper is directed, a supporting arm adjustable along said supporting rod, a hanger pivoted to said supporting arm, a pager feeding device carried by said hanger, an a pivoted controlling device operatively connected to said rod to turn it and thereby to throw and maintain the paper feeding device in or out of cooperatlve relation with the platen.

3. In a typewritin machine, the combination of a rotative pl aten, a supporting rod pivoted on itslongitudinal axis and over which the paper is directed, a support adjustable along said supporting rod, a hanger pivoted to said support, a paper feeding device carried by said hanger, and a pivoted adjustable along said supporting rod and mounted to turn therewith, a sprlng-pressed rigid hanger pivoted to said support and havin a limited pivotal movement thereon, an in ependently spring-pressed paper feed ing device carried-by said hanger, and a piv oted hand actuated controlling device having a cam operatively connected with said rod to .eaaaes I the platen.

5. In a typewriting machine, the combination of a rotative p aten, a supporting rod pivoted on its longitudinal axis and over which the paper is directed, a support adjustable along said rod and fixed to turn therewith, a spring pressed hanger pivoted to said support, a margin feed roller carried by said hanger, and an independently springpressed paper finger pivoted to turn on said hanger.

6. In a typewriting machine, the combination of a rotative platen, two sets of parallel feed rollers, one near the front and one near the rear of the platen, parallel shafts on which said feed rollers are mounted, rigid arms or yoke pieces supporting said shafts, spring pressed angular levers having fixed pivots, the said yoke pieces bein pivoted intermediate their ends to one set 0 the arms of said angular levers, and hand controlled carrying means cooperative with another set of the arms of said angular levers, for moving said levers a ainst their spring pressure to release the feed rollers.

7 In a typewriting machine, the combination of a rotative platen, two sets of parallel feed rollers, one set near the front and one set near the rear of the platen, parallel shafts on which said feed rollers are mounted, ri id arms or yoke pieces supporting said-sha ts. three-arm an ular levers to one set of the arms of'whic 'said oke pieces are pivoted intermediate the en s of said yoke pieces, springs connected to another set of the arms of said levers, and hand actuated means cooperating with the third set of arms of said levers.

8. In a typewriting machine, the combination of a rotative platen, two sets of parallel feed rollers, one set near the front and one set near the rear of the platen, parallel shafts on whichsaid feed rollers are mounted, ri 'd arms or yoke pieces supporting said sha s, three-arm an ular levers to one set of the arms of whic said oke pieces are pivoted intermediate the en s of said yoke pieces, springs connected to another set of the arms, a hand controlled rock shaft, and projections on said rock shaft, said projections colevers.

9. In a typewriting nation of a rotative p aten, two sets of parallel feed rollers, one set near'the front and one set near the rear of the. laten, parallel shafts on which said feed r0 ers aremounted, rigid arms or yoke pieces supporting said shafts, three-arm angular levers to one. set of the arms of which said yoke pieces are pivoted intermediate the ends of said yoke pieces, springs connected to another set of the arms, a spring-restored hand controlled said yoke with the third set of arms on said machine, the combi'-:

rock-shaft, and crank arms adjustably secured to said rock shaft, said crank arms cooperatmg with the third set of arms on said levers.

1t). In a typewriting machine, thecombinatlon of a rotative platen, front and rear feed rollers, asupport for said feed rollers, hangers to which said support is pivoted intermediate the ends of the latter, and stops coi perative with said support to one side of the pivotal connection between the support and the hangers and operative to arrest the support at one side of said pivots as the'support is moved away from the platen.

11. In a typewriting machine, the combinationvof a rotative platen, front and rear feed rollers, parallel shafts on which said feed rollers are mounted, rigid yoke pieces which connect said shafts, hangers to which ieces are pivoted intermediate the ends of the latter, and stops which cooperate with said yoke pieces to one side of the pivotal connection between said yoke pieces and hangers.

12. In a ty'pewriting machine, the combination of a rotative laten, forward and rear feed rollers, means or concurrently moving said forward feed rollers away from the laten, and means for arresting the forward eed rollers in such movement without affecting the movement of the rear feed rollers.

13. In a typewriting machine, the combination of a rotative laten, forward and rear feed rollers, means fhr concurrently moving said forward feed rollers away from the platen, means for arresting the forward feed rollers in such movement without affecting the movement of the rear feed rollers, and

means for adjusting said arresting means. 1 14.- In a typewriting machme, the combination of arotative p aten, two sets of parallel feed rollers, one set near the front and one set near the rear of the platen, parallel shafts on which said feed rollers are 1noun ted, rigid arms or yoke pieces supporting said shafts, spring-pressed pivoted arms to which said yoke pieces are pivoted intermediate the ends of the yoke pieces, hand controlled means for moving said a'rms a ainst their spring pressure to release the eed rollers, and means for arresting the movement of one set of feedrollers away from the platen without affecting such movement of the other set of feed rollers. 15. In a typewritin machine, the COI'Ilblnation of a rotative p aten, two sets of parallel feed rollers, one set near the front and one set near the rear of the shafts on which said feed rol ers aremounted, rigid arms or yoke pieces supporting. said shafts, spring presse angular levers to .which said yoke pieces are pivoted intermediate the ends of the yoke pieces, hand controlled carrying means cooperatlve w1th platen, parallel Y shafts, three-arm angular levers to one set of the arms of which said yoke pieces are pivoted intermediate the ends of said yoke pieces, springs connected to another set of the arms of said levers, hand actuated means cooperating with the third set of arms of said levers, and means for arresting the movement of one set of feed rollers away from the platen without affecting such movement of the other set of feed rollers.

17. In a typewriting machine, the combination of a rotative platen, two sets of parallel feed rollers, one set near the frontand one set near the rear of the platen, parallel shafts on which said feed rollers are mounted, rigid arms or yoke pieces supporting said shafts, three-arm angular levers to one set of the arms of which said yoke pieces are pivoted intermediate the ends of said yoke pieces, springs connected to another set of the arms, a hand controlled rock shaft, projections on said rock shaft, said projections cooperating with the third set of arms on said levers, and adjustable stops cooperative with said yoke pieces to one side of the pivots'thereof in the movements of said yoke pieces away from the platen.

1 8. In a typewriting machine, the combination of a rotative platen, two sets of parallel feed rollers, one set near the front and one set near the rear of the platen, parallel shafts on which said feed rollers are mounted, rigid arms or yoke pieces supporting said shafts, three-arm angular levers to one set of the arms of which said yoke pieces are pivoted intermediate the ends of said yoke pieces, springs connected to another set of the arms, a spring-restored hand controlled rockshaft, crank arms adjustably secured to said rock shaft, said crank arms cotiperating with the th rd set of arms on said lev rs, and stops which limit'the movements of the forward set of feed rollers away from the platen without aflecti'ng such movements of the rear set of rollers.

19. In a typewriting machine,-the combination of a platen, a rock-shaft, arms mounted on said rock-shaft to afford a limited movement of the shaft independently thereof, a cross bar connecting said arms, and leadingedge stops carried by said bar. said stops comprising the unturned ends of substantially U-shaped resilient members.

ceases therefor, leading edge stops comprising inherently resilient members bent to form stop portions, and means for effecting a movement of the stops toward the platen and for effecting a movement ofthe feed rollers away from the platen.

21. In a typewriting machine, the combination of a 'rotative platen, feed rollers therefor, leading edge stops comprising.

resilient members bent to form stop portions, a cross bar on which said members are mounted to afford a flexion thereof on the bar, and means for effecting a movement of the stops toward the platen and for effecting a movement of the feed rollers away from the platen.

22. In a typewriting machine, the combination of a rotative platen, feed rollers therefor, leading edge stops comprising resilient members bent to form stop portions, a cross bar to which said resilient members are attached so as to afford a fiexion of said members on said bar, the cross bar being apertured to receive the stop portions, and means for effecting a movement of the cross bar toward the platen and for effecting a movement of the feed rollers away from the platen.

23. In a typewrit'ing machine, the combination of a rotative platen, feed rollers therefor, leading edge stops comprising resilient members each bent at its ends to form stop portions, a cross bar to which said members are connected intermediate of their ends to afiord a flexion thereof on the bar, said bar being apertured to receive the bent ends or stop portions of said members, and means for effecting a movement of the cross bar toward the platen and for effecting a movement of the feed rollers away from the platen. V

24. In a typewriting machine, the combination of a rotative platen, feed rollers therefor, leading edge stops comprising resilient members each bent at its ends to form stop portions, a cross bar to which said members are conn ected intermediate of their ends.