US1447990A - Typewriting machine - Google Patents

Description

Patented Mar. 13, 1923.

narran* staresA 1.447.990 PATENT orties'.

ALFRED e. E. yKuRowsKr, or BROOKLYN, NEW YORK, AssiGNORTo UNDERWOOD TYEEWRITER COMPANY, or NEW YORK, N. Y., A CORPORATION or DELAWARE.

TYPEWRITING MACHINE.

Application inea April 9, 1921. serial N. 459,964.

Kings, city and State of New York, have invented certain new and useful Improvements in rlypewriting Machines, of which the following is a specification. p

This invention relates to typewriting machines 4which, are used exclusively forl stencil-writing, such as set forth in my co-pending application, Serial No. 459,618, filed April 8, 1921.

ln said co-pending application is disclosed means for simultaneously line-feeding a stencil at the front of the platen rotating the platen, and feeding an ink ribbonfbetween the stencil and the platen, for `malringimpressions on the rear of the stencil to render thetyped matter visible.

One feature of the present invention comprises improved ribbon-feeding ymeans whereby the life of the ribbon may be pro-y longed. F or this purpose, there are provided two rolls, each having a ratchet-wheel attached thereto, and a double pawl member engages either ratchet-wheel.

Another feature of this invention is ,the provision of an improved replaceable celluloid surface on the platen. A'hard surface of this type aids in producing sharp impressions onv the stencil, but tends to become worn more readily .than the Ordinary rubber'platen surface. Provision is therefore made for readily replacing the worn celluloid surface.

The stencils are generell small waxed sheets fixed to acardboard rame, andcontainonly a few lines of typing. The present invention provides for line-spacing the stencil-holding frame and the platen for several line-spaces and then returning the frame and platen to the initial position. It will be apparent that substantially the same portion of the platen surface is' used each time, and that this portion will wear out while the remainder of the surface is Still in good condition.

Itis another feature of this invention to provide means whereby the platen may be.

In the accompanying drawings, Figure 1 is a vertical section of an Underwood standard typew'riting machine as modified by the invention, whichis shown` applied thereto, only the necessary co-operating elements of the machine being' illustrated. Figure 2 is a frontview partly sectioned, of the machine shown vin Figure 1.

Figure 3 is a detailview` ofA the ribbonrolls and their mounting. i l

Figure 4l is a View similarilto I `ig`urel l, and shows the double pawl member after a stencil has beenraised to its uppermost position, the pawl being set for co-operation with the left ribbon-roll. v y y Figure 5 4is a View similar to Figure 4,

with parts omitted, and shows the double pawl member aftera stencil yhas reached the highest position, the awl beingy set for cooperation with the rig t ribbon-roll; i'

Fi ure 6 is a detail vertical sectiorn showing t e method of attaching thefcelluloid surface to the platen.

A carriage, indicated generally bythe numeral 10, travels on the usualfrontrail (not shown) and a rearrail 11, andk comprises a shiftable platen-frame 12 having end walls 13 and 14. The frame 12 is supported in the usual manner by arms 15 pivoted at one end on a tie-rod 16 of the can" riage, and supporting the frame at the other end 17. The shift-frame is provided with a roller 18 riding on a rail 19 integral with frame 20, the latter being pivoted on the machine at 21 and rotatableby a shift-lever (not shown). The end walls of theplatenframe 12 are. connected by a tie-strap 22,

to which are fixed side platesl 23` and `241 confixed on the shaft 30. A platen 35 is loosely mounted upon shaft- 30 between the` side y plates 23 and 24, and is madepto rotate i11- tegrally with the shaft by mechanism to be hereinafter described. y i

p To the underside of the tie-strap 22are stencil-holding frame comprising side arms extending.forwardly toward the frontk ofthe pla-ten and provided with'slots 39 to clear shaft 30, the engagement of said shaft in said slots serving tol guide the stencil-l holding frame in its up-and-down movement, to bedescribed hereinafter. The arms 43 'broaden out toward the front of the machinea'nd support at their forward ends the stencil-holder 44, which comprises. two U- shaped'inembers'45 'and 46, spaced apart by a filler member 47, thus forming a recess into which stencil frames may be inserted. Thesten'cil frames employed are usually of cardboard'or similar .material which cannot be bent to a large extent without breaking.V Nevertheless, it is desirable to make the stencil vconform to the curvature of the platen to some e`xte.nt,-especially at the printing point indicated by the raised type-head 36. For this purpose, the stencil-holder 44 is given ,a radius of curvature much larger than that of the platen and substantially equal to the length of sidearms 43.

To line-space the stencil-holder upwardly,

pins and project into cam slots 56 in the arms 43, said pins being fixed to arms 52 andv 53, respectively, on hubs 50 and 51 fixed to move with shaft 30 when the latter is rotated in line-feeding direction by the line-space handle 32 or by the finger-wheels 31. Preferably, the platen is rotated upwardly simultaneously with the stencil-holding frame by means which connect the loosely-mounted platen to the shaft to move integrally therewith.V The connecting means comprises a pin 59 at the end of a leafspring 5S carried by an arm 57, which may be fixed on hub 50, said pin projecting` into anopening` 62 in an arm 00 fixed to the platen. `1 firm 57, spring' 53, arm 60, and the platen therefore rotate as a unit when the shaft is rotated. Since the typing` on a stencil generally occupies not more than three or four lines, and since the platen and l stencil-holder move upwardly and downwardly together, the same portion of t-he platen is 'used repeatedly, and that portion willI consequently wear out rapidly and have to be replaced. Means are therefore provided for rotating,l the platen relatively to the shaft and the stencil-holder to bring a fresh portion lof the platen surface into use. For thisl purpose, pin 59 may be withdrawn from opening G2 and the platen rotated to a new position on shaft 30,pin 59 lodging in another ope-ning 64, `whichmay be forme-d in an arm 63 similar to arm 60, but extend-v ing from the sliaft'in another direction.

F or producing sharp impressions on the i stencils, the platen is provided with a cellusections are, of course, readily replaceable by merely sliding the old sectionv from the grooves of the metal strips 72,73.

It yis'desirable to render the typed matter on a stencil visible, and, for this purpose,

an ink ribbony 30 is positioned to operate between they stencil-holder and the platen to print on the back of the stencil;A The ribbon is led from onev of tworolls 84, 85 mounted between the side platesl 23, 24, around the platen to the other of said rolls, being guided by guide rollers 81, 82 and 83. .loll 34 is mounted vupon shafts 90 and 91 supported in bearings 92 and 93 fixed to the side plates' and roll 85 is similarly mounted on the side plates, being mounted upon shafts 94. and 95 supported in bearings- 96 and 97A fixed to said side plates. The' ink ribbon is wound at each end upon a ribbon- spool 102, 103, the latter being mounted on the ends of shafts 90 and 91, and 94 and 95, which project therein, and between flanges 98 and 99, and 100 and 101, fixed upon said shafts near the ends thereof. l/Vhen mounted between theflanges, the spools are held against movement relative to the flanges by a pin 105, fixedl to each flange and projecting into a groove 104 formed in each end of the spools. rllhe ribbon-spools may be readily inserted or withdrawn from their mounting, due to the fact that one'flange of each roll 34, 85 (here shown as flanges 99 and 101) is movable laterally, the shafts 91 andy 95 being drawn outwardly in their bearings 93 and 97 by knobs 110, 111, against the action of springs 112 and 113 interposed between the flange and the bearing. Said springs' also provide the necessary tension to take vup i any slack in the ribbon when it is being unwound.

As hereinbefore stated, the ink ribbon is wound upon one of the rolls 34, 85 and` unwound from the other. the ribbon is designed to occur simultaneously with the line-feeding of the stencil, so as to present a fresh surface to each succeeding line typed upon the stencil. The movement of the ribbon is accomplished by fixing a ratchet 116, 117 to each roll 84, 85, adjacent one of the side plates, one of said ratchets being-'operated by a pawl member 120 pivoted at one end of a `lever 121, said lever being` connected' by a link 123 to an arm 124, which may be fixed to the same hub The movement 50 as arm 52; so Lthat rotation of the shaft in line-feeding direction will rotatev both arms 52 and 124 upwardly to raise the stencil frame and actuate the pawl member to drive one of the ratchets and wind the ink ribbon on the corresponding roll. Upon the return movement of the shaft and its attached arms, the pawl member will not op.- erate the ribbon-rolls, the pawl riding idly over the ratchet. It is apparent that, after a sufficient number of stencils have been typed, the rib-bon will be completely wound upon one of the rolls 84, 85 with which the ratchet is in engagement. The ribbon is ca-.

pable of further use, and, hence, means are provided for moving the pawl member into engagement with the other ratchet, so that further line-feeding of the platen winds t-he roll which had previously been unwound, andA thus avoids the necessity of manually rewinding the ribbon. For this purpose, pawl member 120 is provided with two pawls 130 and 131 force-operation with ratchets 116 and 117, respectively, the pawl member being swung about its pivot into engagement with one or the other of said ratchets depending upon which roll it is desired to wind. The pawl member is held in engagement with either ratchet, as desired, by a spring detent inthe form of a lever 132 pivoted upon lever 121, and having its upper end pressed by a spring 133 connected to its lower end into either of two notches 13e/L, 135 in the pawl member. TWhen the detent lodges in notch 1341, as in the Figure 1 position, the detent presses downwardly upon surface 140 of notch 1311 to swing the pawl member in a clockwise. direction, and hence into contact with ratchet 1116; when the detent lodges in notch 135 it presses forwardly against surface 141 of the `notch to swing the pawl member in a counter-clockwise direction` and hence intov contact with ratchet 117. The pawl member remains in contact with the respective ratchet for a numberof line-spaces equal to the maximum number of lines on the stencil,'usually not more than three or four. However, by varying the distance of the pawl-member from sleeve 122, i. e., by bringing it closer to or further from ratchet 116, and by varying the size of the parts co-operating with the pawl-member accordingly, the pawls 13()l and 131 can be brought into contact with the respective ratchets for a longer or shorter time to vary the number of line-spaces through which the respective ribbon-rolls are rotated.

The complete operation of the device is as follows: Assume the parts to be in the position vshown in Figure 1. Upon actuation of the line-space handle `32 or the fingerwheels 31 in a line-feeding direction, shaft 30 and hence arms 52, 53, 124C and 57 will be rotated. Arms 52 and 53 will raise the stencil-holding frame, due to the pin-and-slot connection. therewith;I arm 1211 will raise link 123 to rock lever 121 and opera-te pawl-member 12C-downwardly to wind the ink-ribbon on roll 84; and arm 57 will rotate the' platen upwardly because of the spring-and-pin connection therewith. Then the stencil has been fully typed, the shaft 30 is rotated in the reverse direction to 'return all of the arms and their cofoperating parts to the in itial position shown in Figure 1. When the ink-ribbon has been fully wound on roll 84, the pawl-member 120 is swung about its pivot to bring pawl 131 into engagementl with ratchet 117. Thel ribbon will then be wound upon roll 85 when shaft 30 is oper-- ated in line-feeding direction. lt willy be observed that, when the ribbon is being wound upon roll 84, it` is `traveling past the front of the platen in a direction opposite to that ofthe stencil-holder. .This is not objectionable, however, since the stencil is slightly spaced from the platen, except when the type strikes, which wouldr prevent fouling. In any case, a clear ink impression is not-essential, the ink backing being merely for the purpose of rendering the stenciling visi-` ble. As already pointed out, and as v"shown in Figure-4, not more than one-halffof the.

platen is utilizedy in they typing of stencils, `and'-therefore' the platen `may be rotated through one-halfI a revolution to.' bring a' fresh part thereof into effective position.

The replacement ofthe Celluloid surface will beclear from the description. Vhen an inkribbon has been exhausted, it is woundupon one spool 102 or 103, which spool is released by drawing knob or 111 outwardly, and a new spool or ribbon-.is inserted.` l.

Variations may be resorted to .within the scope of the invention, and `portions ofthe improvements'may be used without others.

'Having thus described jmy invention, I claim: i

1. In a typewriting machine, in combination, a platen-frame,a shaft journaled therein, a platen mounted on said shaft, a stencilholder mounted for movement in front .of said platen, means for rline-spacing said stencil-holder, a pair of rolls mounted-in said `platen-frame, ribbon passing 'from one of lsaid rolls between said stencil-holder and platen to the other of said rolls, a separate ratchet connected to'each roll, r"a -paivldevice settable/ at will for co-operation with either of said ratchets `to windithe ribbon upon the respective roll atline-space inter-- vals when operated, and means for operating said device sin'iultaneously with the linespacing of the stencil-holder. f

f 2.' ln typewriti-ng machine, in combination, a platen-frame, a shaft journaled therein, a platen mounted on said shaft, a' pair of rolls mounted in said frame, av ribbon passing from one of said rolls laround said platenfto the other of said rolls, a sepa-rate .130

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unwind said ribbon fromthe other of said rolls when said device is operated, and a connection between said device and said shaft whereby said device is operated when said-shaft is rotated in a line-feeding direction.

3. In a typewriting machine, in combination, a platen-frame, a shaft journaled therein, a platen mounted on said shaft, a pair of rolls mounted in said frame, a ribbon passing from one ofsaid rolls around said platen tothe other of said rolls, a ratchet fixed to each roll, a double pawl-member having a separate pawl for engagement with each ratchet, said member being settable at will toengage either of said ratcliets to wind the ribbon upon the respective roll when said member is operated, and a connection between said shaft and said member whereby saidmember is operated whensaid shaft is rotated in a line-feeding direction.

In a typewriting machine, in combination, a platen-frame, a shaft journaled ther in, a platen mounted onsaidsliaft, a pair of rolls mounted in said frame, a ribbon passl ing'k from -one of said rolls around said platen tokthe other `of said'rolls, a ratchet fixed to each roll, ay double pawl-member having a separate pawl for engagement with each ratchet, said member being settable at will 'l to engage either of said ratchets to wind the ribbon upon the respective roll when said member is operated,.a detent, spring pressing said detent against said member for holding said member in engagement with either of said ratcliets, and a connection between said shaft and said member whereby saidmember is operated when said shaft is rotated in a line-feeding direction.

5. In a typewritiiig machine, in combination, a platen-frame, a shaft ournaled therein, a platen mounted on said shaft, a pair of rolls mounted in said frame, a ribbon passing from one of said rolls around said platen to the other of said rolls, a ratchet fixed to each roll, a double pawl-member having a separate pawl for engagement with each ratchet, said member being settable at will to engage either of said ratcliets to wind the ribbon upon the respective roll when said y member is operated, said member having two notches, a detent, a spring pressing said detent into said notches, the lodging of said detent in one of said notches pressing said member into engagement with one of said ratchets, and the lodging of said detent in the other of said notches pressing said member into engagement with the other of said ratchets, and a connection between said shaft and said member whereby said member is operated when said shaft is rotated in a line-feeding direction.

6. ln a typewriting machine, in combination, a platen-frame, a shaft ournaled therein, va platen mounted on said shaft, a pair of rolls mounted in said frame, a ribbon passing from one of said rolls around said platen to the other of said rolls, a ratchet xed to eac-h roll, a double pawl-meinber having a separate pawl for engagementfwith each ratchet, said member being settable atA will to engage either of said ratchets towind the ribbon upon the respective roll when said member is operated, said member having two notches, a detent, a spring pressing said detent into said notches, the lodging of said detent in one of said notches tending to-turn said member clockwise into engagement with one of said ratchets, and the lodging of said detent in the other of said notches tending to turn said member counter-clockwise into engagenientvwith the other of said ratchets, and a connection between said shaft and said memberv whereby said member is operated when said shaft is rotated in a linefeeding direction.'

7, In a typewriting machine, in combination, a platen-frame, a shaft journaled therein, a platen mounted on said shaft, a pair of rolls mounted in said frame, a ribbon passing `from one of said rolls around said platen to the other of said rolls,`a ratchet lined to each roll, 'a lever pivotally mounted on said machine, a double pawl-member pivotally mounted at one end of said lever, said meinber having a separate pawl for engagementv with each ratchet, said member being settable at will to engage either of said ratchets to wind the ribbon upon the respective roll when said member is operated, and a connection between said shaft and the other end of said lever whereby said member is operated when said shaft is rotated in alinefeeding direction.

8. In a typewriting machine, in combina-- tion, a platen-frame, a shaft ournaled therein, a platen mounted on said shaft, a pair of rolls mounted in said frame, a ribbon passing from one of said rolls around said platen to the other of said rolls, a ratchet fixed to each roll, a lever pivotally mounted on said machine, a double pawl-member pivotally mounted at one end of said lever, said member having a. separate pawl for engagement with each ratchet, said member being set-` table at will to engage either of said ratchets to wind the ribbon upon the respective roll when said member is operated, a second lever pivotally mounted on said first lever, a spring connecting the lower end of said second lever to said first lever and forcing the upper end of 'said second lever forwardly against4 said member for holding said member in engagement with either of said ratchets, and a connection between said shaft and the other end of said first lever whereby said `inem er is operated when said shaft is rotated in a line-feeding' direction.

9. In a typewriting machine, in combination, a platen-frame, asliaftjournaled therein, a line-space mechanism for said shaft, a platen loosely mounted on said shaft, and releasable means for rotatively connecting together the shaft and the platen at relatively different rotative positions, said means coinprising a member fined4 upon the platen, a member fixed upon the shaft in proximity to they member on the platen, one of said members having therein a plurality of angularly-spaced holes, and a` pin movably I carried by the other of said members to be engaged in one or another of said holes.

10. In a typewriting machine, in combina.- tion, a platen-frame. a shaft journaled therein, a line-space mechanism for said shaft, a platen loosely mounted on said shaft and having an opening in an end thereof, an arm fixed to said shaft, a spring member fixed to said arm, and a pin fixed to said spring member and lodging in said opening to connect said platen to said shaft, so that said platen and shaft rotate as a unit.

11.k In a typewriting machine, in combina-- tion, a platen-frame, a shaft journaled therein, a line-space mechanism for `said shaft, a platen loosely mounted on said shaft and havinga plurality of openings in an end thereof, an arm fixed to said shaft, a spring member fixed to said arm, and a pin fixed to said spring member and lodging in one of said openings .to connect said platen to said shaft, so that said platen and shaft rotate as a unit, said pin being withdrawable against the action of said spring member to permit said platen to rotate to a new position relative to the shaft, said pin engaging in anotherof said openings to fin said platen to said shaft in the new position.

12. In a typcwriting machine, in combination, a platen-frame, a shaftI journaled therein, a line-space mechanism for said shaft, a

platen loosely mounted on said shaft, releasable means fixed to said shaft and connected to said platen to cause said platen and shaft to rotate as a unit. the same portion of the surface of the platen lengthwise thereof being subjected to repeated use until said portion is worn out, the releasing of said means permitting the rotation of the platen to a new position relative to the 'shaft to bring a fresh portionv of the platen surface into use, means whereby the releasable means may be connected to the platen to hold the latter in the 'new position, and a hard surface for said platen comprising a plurality of removable sections lengthwise of the platen, the number of sections corresponding toy the effective positions of the platen relative to the shaft.

13. ln a typewritingmachine, in combination, a platen-frame, ashaft journaled therein,v a line-space mechanism for said'v shaft, a platen loosely mounted on said shaft, releasable `means fixed to'said shaft and connected to said platen to cause said platen and shaft to rotate as a unit,the same portion of the surface of the platenflengthwise thereof being subjectedto repeated use until` said portion is vworn out, the releasing of said means permitting the rotation ofzthe platen to a new' position relative to the shaft to bringr a fresh lportionof the platensurlface into use, means whereby the releasable means may be connected tothe platen to hold thel latter in the new position, a hard surface for said platen comprising a vplurality of removablecelluloid Sect-ions lengthwise of the platen, and means lfor holding said sections against movement around said platen to permit withdrawal and insertion of said sections lengthwiseof the platen, the number of sections corresponding to the effective positions of the platen relative to the shaft. i

1d. ln a'typewriting.machine, in combination, a4 platen-frame, a shaft Journaled therein, line-space mechanism for said shaft, a platen looselyl mounted' on said I shaft, and releasable means for rotatively connecting together the shaft and the platenv at relatively differentirotativ'e positions, said means comprising a member carried by the platen and having therein a plurality o f Vangularly-spaced holes, an arm vcarried by the shaft in proximity to said member, and a pin inovably carried by said arm to be engaged inV one or another of said holes.

15. lin a typewriting machine, in'coinbination, a platen-frame, a shaft journaled' therein, a line-space mechanism fork said los shaft, a ,platen loosely! mounted on said i shaft, a stencil-holder mounted for movement in front vof said platen, means for hnespacin'g said stencil-holder from said shaft,

lis

space intervals between said platen andv said stencil-holder vconcomit'antly with the linespacing of the platen and stencil-holder.

16. In a typewriting machine, in combination, a platen-frame, a shaft journaled therein, a line-space mechanism for saidshaft, a' platen loosely mounted on said shaft', a stencil-holder mounted for movement in front of said platen, means for line-spacing said stencil-holder from said shaft, means y(so,

Vfor line-spacing the platen from said shaft concomitantly with the line-spacing of the stencil-holder, said line-spacing means for the platen including means for adjusting the rotative position of the platen relatively to the stencil-holder, thereby to bring fresh vportions of the platen surface into use, and a pawl-and-ratchet device operated by said shaft and manually settable for feeding a ribbon in one direction or the other at will at line-space intervals between said platen `and said stencil-holder lconcomitant-ly with the line-spacing of the platen and stencilholder.

17. lIn a typewriting machine, in combination, aplaten-frame, a shaft j ou-rnaled therein, a line-space lmechanism for said shaft, a platen loosely mounted on said shaft, a stencil-holder mounted for movement in front ofsaid platen, means for line-spacing said stencil-holder from said shaft, and a releasable connecting device between said shaft and said platen effective to line-space the platen concomitantly with the linespacing of said stencil-holder, and also effective for rotatively adjusting the platen relatively to the stencil-holder to bring a fresh portion of the platen surface into use, said device comprising a member' carried by the platen, another member carried by the shaft in proximity to the member carried by the platen, one of said members having a plurality of angularly-spaced pin-receiving holes therein, and a pin movably carried by the other member to be selectively engaged in one or yanother ofsaid holes.

18. In a typewriti-ng machine, in combination, a platen-frame, a Shaft journaled therein, a 'line-space mechanism for said shaft, a platen loosely mounted on said shaft, ka stencil-holder mounted for movement in front of said platen, means for line-spacing said stencil-holder from said shaft, a releasable connecting device between said shaft and said platen effective to linespace the platen concomitantly wit-h the line-syncing of said stencil-holder, and also effective for rotativelynadjusting the platen relatively to the stencil-holder to bring-a fresh portion of the platen surface into use, said device comprising a member carried by the platen, another member carried by the shaft in proximity to the member carried by the platen, one of said members having a'plurality of angularly-spaced pin-receiving holes therein, and a pin movably lcarried by the .other member to be selectively engaged in one or another of said holes, and means operated by said shaft forffeeding a ribbon at line-space interv-als between said platen and said stencil-holder concomitantly v with the line-spacing of the platen and stencil-holder.

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19. ln a typewriting machine, in combination, a platen-frame, a shaft journaled therein, a line-space mechanism for said shaft, a platen loosely mounted on said shaft, a stencil-holder mountedfor movement in front of said platen, means for line-spacing said stencil-holder from said shaft, a releasable connecting` device between said shaft andsaid platen effective to linespace the platen concomitantly with the line-spacing of said stencil-holder, and also effective for rotatively adjusting the platen relatively to the stencil-holder to bring a fresh portion of the platen surface into use, said device comprising a member carried by the platen, another' member carried by the shaft in proximity to the member carried by the platen, one of said members having` a plurality of singularly-spaced pin-receiving` holes therein, and a pin movably carried by the other member to be selectively engaged in oneor another of said holes, and means operated by said shaft for feeding a ribbon at line-space intervals between said platen and said stencil-holder concomitantly with the line-spacing of the platen and stencil-holder, and includingli,` a manuallysettable device for reversing the direction of the line-.space feed of the ribbon at will.

20. ln ka typewriting machine, in combination, a platen-frame, a shaft journaled therein, a line-space mechanism for said shaft, a. platen loosely mounted on said shaft, a stencil-holder lmounted for movement in front-.of said platen, means: for line-spacing said `stencil-holder from said shaft, a releasable connecting device between said shaft and said platen 'effective to linespace the platen concomitantly with the line-spacing of saidstencil-holder, and also effective for rotatively adjust-ing the platen relatively to the stencil-holder to bring a fresh portion of the platen surface into use, said device comprising a member carriedby the platen,l another member carried by the shaft in proximity to the member carried by the platen. one of said members having.

a plurality of angularly-spaced pin-receiving holes therein, and a pinmovably carried by thcl other member` to be selec-tively engaged in `one or another of said holes, and means operated by said shaft for 'feeding a ribbon at line-space intervals between said platen and said stencil-holder concomitantly with the line-spacing of the platen and stencil-holder, and including a manuallysettable pawl-and-ratchet device to cause said ribbon to be line-fed in one direction or the other at will. f

ALFRED G. F. KURQ-VVSKI. `Witnesses JENNIE P. THORNE, MARGARET G. NooNAN.

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