US1455497A - Typewriting machine - Google Patents

Description

May 15, 1 923.

1,455,497 A. G. F. KUROWSKI TYPEWRITING MACHINE Filed Aug. 30, 1919 3 Sheets-Sheet 1 May 15, .1923.

, A. G. F. KUROWSKI TYPEWRITING MACHINE :s Sheet-Sheet 5 Filed Aug. 30 1919 Patented May 15, 1923.

UNITED STATES ATENT OFFICE.

ALFRED G. F.- KUROXVSKI, 0F BROOKLYN, NEW YORK, ASSIGNOR T0 UNDERWOOD TYIEWRI'IER COMPANY, OF NEYV YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING Macrame.

Application filed August 30, 1919. Serial 1%. 320,866.

To all whom it may concern: a

Be it known that I, ALFRED G. F. KUnowsni, a citizen of the United States, formerly a citizen ofGermany, residing in Brooklyn Borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

his invention relates mainly to typewriting machines of the round-platen variety, provided with holders or carriers for stencilcards.

Heretofore, it has been the practice to proyide a special stencil-card-carrying mechanism, and connect it to the platen; this mechanism being permanently incorporated in the machine, which, therefore, was practically uselessfor other purposes.

One of the objects of the invention is to adapt the machine for either stencil-card writing or for ordinary typing on wide sheets, at will.

To this end, I provide, a st-encil-card-carrier or holder, whichcan be fed line by line while writing the stencil, but which can be also rendered ineffective. I also make it occupy a position .where it will be out of the way, so that theplaten may be used for writing the ordinary sheets of paper of ordinary width. i

The stencil-card-holder, when in its depressed position, preparatory to typing the first line on the stencihcard, occupies a position well below the printing line on the platen, and is devoid of parts which extend up in front of the platen, so as not to in terfere with the use of the platen for typing ordinary sheets, when desired. The stencil-card-holder has meansfor clipping the card at the bottom side edges thereof, so as to avoid the use of parts which extend up in front of the platen, These clips are carried by a bar which may occupy a position far below the front of the platen where it is out of the way when wide sheets are being typed.

The line-spacing movements of the card holder are effected by means of racks at the ends of theplaten, said racks engaging with the crown gears'carried upon the platen ends and being pivoted at their lower ends to said bar, so'that they may be swung outof mesh with said gears, thus permitting the platen to be rotated independently of the stencil-card devices when typing ordinary sheets. I

The racks may be simultaneously disconnected from the gears by swinging a lever provided upon the platen frame; and said lever is preferably also connected to means to shift the feed-rolls, whichrun upon the bottom front side of the platen, from normal to abnormal positions. In their normal positions, they project in front of the platen where they will be in the Way of the stencil-cardholder; and, accordingly, they are retracted by means of said lever by the same movement thereof that connects the stencil-cardholder to the platen to be; driven thereby. Upon the reverse movement of the lever, the feed-rolls arerestored to their proper positions upon. the platen at the same time that the stencil-cardholder is disconnected.

Said rolls are preferably in the form of front and rear rolls pivoted upon the ends of levers, said levers being pivoted between their ends to spring-pressed levers, which, in turn, are carried upon spring arms to retract the rolls when operated by said lever or handle. y

In order to afford room for the stencilcard-holder below the front side of the platen, the means for supporting the typebar segment occupies apositional: thefront of said segment, so that the rear side of said segment may be cutaway'to give the neces sary clearance for the stencil-cardholder,

embodying the present invention.

Figure 5 is a spread perspective of the typerbar segment and its mounting,

Figure 6 is a rear perspective of the segment and ribbon-vibrator as mounted therein.

Figure 7 is a sectional detail showing the locking device for a stencil-frame.

Figure 8 is a side view of aside frame plate in which the platen is journaled.

Figure 9 is a rear view of the parts seen in Figure 7, showing a rack disconnected from the platen.

Figure 10 is a view similar to Figure 9, but showing the rack moved against the platen.

Figure 11 is a perspective view of most of the parts seen in Figure 9.

Figure 12 is a diagrammatic side view of the stencil-frame, the ,feed-rolls, and the connections therebetween, and shows their relation to the platen; the feed-rolls being moved out of the path of the stencil-frame. Figure 13 is a view similar to Figure 10, but showing the stencil-frame lift-ed away from normal position as when inserting a stencil-card.

Figure 14 is a diagrammatic side view, showing how the stencil-frame, when lifted from its normal position, locks the handle for moving the fe ed-rolls.

In an Underwood typewriting machine, type-bars are carried upwardly and rearwardly by means of sub-levers 21 to print against the front face of the platen 22 whenever any sub-lever'21 is actuated by the depression of its type-key (not shown).

Whenever any type-bar 2O approaches the platen, the usual heel 23 upon it strikes the universalbar 24 which forms part of a vi-' brating frame journaled on a rocker 25 at the rear, thus causing the usual escapement dogs 26 to permit the carriage to feed along a letter-space at the return of the type-keys, because the carriage is normally under the tension of the spring-barrel 27 and held against moving by an escapement wheel 28, which is alternately engaged by the dogs 26. The escapement whee128 controls the carriage 29 in which the platen is journaled, be-

cause the escapement wheel is connected by dogs (not shown) to a pinion 30, which meshes with a rack 31 connected to the typewriter carriage.

The machine herein illustrated is adapted to either cause printing to be effected upon a work-sheet held against the platen 22 by a paper-apron 32 and feed-rolls 33, in which case it prints through a ribbon 34 threaded through a ribbon-carrier 35; or else the machine may effect a stencil printing, in which case'the ribbon-vibrating mechanism is usually silenced so that the types 36 strike against the bare stencil-card or stencil-sheet. To actuate the ribboncarrier 35, there is provided a ribbon-vibrating lever 37, pivoted at 38 upon a bracket 39 fast to the shift rail 40,

a slot 42 in an upper extension 43 of the housing 44, adapted to be carried backvand forth by the universal bar 24. For writing through theribbon 34, the pin 41 rides in the slot 42, with the result that every time the universal bar 24 moves rearwardly, the vibrating lever 37 swings upwardly and thereby raises the ribbon to the printing point in front of the platen. The parts so far described may be substantially identical with 'the corresponding parts in the usual Underwood standard typewriter. I

According to the present invention, there may be provided a stencil-card-carrier comprising a channel-bar 45, which normally lies practically directly below the printing point, but which is adapted to be raised by means of the racks 46, pivoted tov it at the opposite ends by screws 47 screwed into the back of the channel-bar, the front of the barbeing cut away to accommodate the screw-heads. The racks 46 feed a stencil-card 48, mounted in the channel-bar 45, up past the printing point at the actuation of the usual line-space lever 49. To enable this to be done, the racks 46, which, in ordinary writing, stand clear of the platen (Figure 9), are adapted to be swung inwardly against crown-gears 50 (Figures 1 and 10), which always rotate with the platen.

In order to provide space beneath the front of the platen for the channel-bar 45,

the segment-plate 51 is provided with a,

nearly flat rear face and with a rear channel 52, in which the ribbon-vibrator 35 slides up and down. In order to permit the channel-bar 45 to rise, without obstruction, substantially to the printing point, the seg-- ment-plate 51 is supported from its front by a bar 53, which extends across the frame of the machine, and is held by screws 54 to lugs 55, which may be cast in the frame.

The bar 53 is recessed at 56 at each side to permit the segment-plate 51 to seat itself therein and between the two recesses 56. The bar is formed with an arcuate section 57 which is adapted to lie between the ridges 58 and 59, resembling those found in the ordinary segment-plates, the'ridge 59 being, however, cut off below the bar 53. The arcuate section57 thus forms a fiat surface extending in two directions to give firm foundation for the segment-plate 51. To hold the segment-plate firmly against'the bar 53, rivets 60 are entered through openings 61 in the bar 53, near the recesses 56, and extend into openings 62 in the segment-plate 51, and are adaptedto be headed down upon the rear of the segment-plate, of which a ridge 63 is cut away ,(Figure 6), toipermit are journaled by a pivot-wire 65, which lies between theridge 63 and'the outer ridge 66 (Figure 6). The universal bar 24 lies in the slot 67, between theridge 68 and the ridge. 68, also at the back of the segmentplate 51. The front'endof the vibrating lever 37 goes just above the center of the ridge 68, which may be slightly cut away as at 69 to be sure, that the vibrating lever clears it. channel 52 by a thin plate 70, having a lip 71 hanging behind the channel 52, said plate fitting down in cut-away portion 72 at the top of the segment-plate 51 and held in place by screws threaded into openings 73 (Figure 8) in the top of the segment-plate passing through openings 74 in the plate 70. The ridge 68 is cutaway at 75, so that the channel-bar (as clearly seen in Figure 4) stands above said ridge. This gives the channel-bar 45 a clear travel of' about two inches up and down below the printing point. In order to be able to move it down in back of the segment, the channel-bar 45 is thin in front, and its bottom slants away until it reaches its maximum thickness at 76 (F igure'? at its rear side,

i said side ineffect constituting a stiffening web. hen a stencil-card or stencihsheet is to be stencilized, the ribbon-vibrator 87 usually is silenced so that the types strike directly upon the stencil-sheet. To effect the silencing of the vibrator, the housing 44 of the Underwood typewriting machine is usually made slidable, so that the extension 43 can'be slid out of range of the pin or pins- 41. One form of connection tordoing this is shown in the patent to F. A Cook, No. 926,050, grantedJune' 22, 1909.

In ordinary typew'riting,"the work-sheet is inserted over the usual rearv paper-table 77 and is bent upward under the platen by an apron part 78 which carriesv it past the feed-rolls 33, which, according to the present invention, may include two sets, namely, 80and 81, which are adapted to be movedrearwardly upon the platen beneath the apron 82,=to permit the channelbar 45 and; a card therein to rise freely to the front of the platen. To effect this moving rearw-ardly of the rolls 80 and 81, there is provided a handle 82 fast upon a short shaft 83 which is journaled in a bracket 88 on the side plate 84, and which is pro,- vided with a rockarm' 85 connected by a pivoted link 86 to a roll-supporting shaft 87. The shaft 87 is j ournaled int-he twoend plates 84' and 88 and has fast thereon rock-arms 89, arranged in pairs, each pair supporting a bail 90, upon which is journaled a swinging arm 91, pivotally connected by means of a shouldered screw 92 to the middle of a small plate 93, which come prises. near its ends, bearings for the rear and front shafts 94 and 95 of the rear and The carrier 35 is guided in the front rolls 8 0 and 81, respectively. To hold the rolls 80 and 81 upon the platen, each bail 90 has Wound around it a strongspring 96 underlying a pin 97 on its arm '91, with position, if the channel-bar 45 is raised by turning the platen to advance it. -Toeffect this, each end of thechannel-bar 45 is extended at 100 beyond thescrews 47, and

has threaded. into it a screw 101 and a stud 101*. The screw 101 normally rests in the cam-extension 102 of a slot 103, formed in a bell-crank 104, which is pivoted at 105 upon the end plate 84. The bell-crank extension 106 of the arm 104 is provided with from been drawn fora notch107,'which normally stands in the Figure 12 position, just clear of the pin 108 on the link 86, when said link stands in the Figure 12 position. \Vhen, however,

the channel-bar 45 rises, the screw101 cams I g the bell-crank 104, to the Figure 14 position, thereby bringing the locking edge 109 of the notch 107 into the path of the pin 108, thus locking the handle 82. Thus, through the handle 82, the feed-rolls 80' and.

81 are locked in their rearward positions (Figure 12), out of the path ofthe channelbar 45, and of the card 48 therein. In order to guide the ends of the channel-bar 45, as it moves. the screw 101 and the stud 101 ride in slots 110, in end 'pl-ates84 and 88. 7'

To enable the swinging of the handle 82,

to the Figure 12 position, to effect the mesh ing of the racks 46 with the gears 50, there is provided at each end of the shaft 87, a collar 111 having a projecting arm 112 pivotally connected to a link 113, having a turned-over end 114, each link adapted to move its rack 46 into and out o-f-jmesh with its gear 50. The connections for moving the racks each include a bell-crank 115 which is connected by a pivot-screw 116 to I the end 114,. said. bell-crank including a pin 117 projecting into a slot 118 in the] side of the adjacent rack 46, with the "result that-as the bell-crank swings. on its pivot 119, it moves therack into and; out of'mesh with. its gear. The pivot 119 is fastened into out-turned ears 120 of a small bracket 121, held by screws 122 to the adjacent. end plate, To' keep the bell-crank 1.15 from sliding on. its pivot 119, there may i be provided. acollar'128 lying between the bell-crank and one of the ears 120. To prevent the channel-bar 4-5 from being jarred or lifted out of position when it is disconnected from the gears 50, the shaft 87 is provided at each end-with a screw 124: which normally rests on an edge 125 (Figure 7), at the top of the channel-bar 45, but which, at the turning of the shaft 87,

swings to an ineffective position clear of the channel-bar Thus it comes about that the channel-bar forming the cardholder is either locked in position, or, when 'mov d from its normal position, it looks the handle 82 against moving the feed-rolls into its path.

To hold the stencilcard 48 in the chan nel-bar 45, there maybe provided suitable holding devices 126 adapted to press the card against the frontof the platen. The resulting outward thrust on the racks 4:6 is received by ears 127 formed by turned over projections on the front of the frame ends 84 and 88, so formed that the racks.

,being left in engagement with the platen through openings in said apron, Figure 12. thereby providing for theinsertion, if desired, of a record-sheet over the rear papertable 77 and around beneath the platenat the back of a suiiieiently thin card or other sheet carried by and fed upwardly by the card-holding bar 45.

Variations may be resorted to within the scope of the invention, and portion's'of the improvements may be used without others. Having thus described my invention, I claim:

1. In a front-strike typewriting machine. the combination with a platen and a papertable adapted to guide sheets around beneath the platen, of a line-spacing mechanism, front feed-rolls to run upon the platen, a card-holding device at the front of the platen and connectible to rise at a line-spacing operation, and a finger-piece shiftable to connect the card-holding device to the .linespacing Emechanism, and adapted to move the feed-rolls rearwardly out of the way of the card-holding device.

2. In a front-strike typewriting machine, the combination with, a platen and a paper table adapted to guide sheets around beneaththe platen, of a line-spacing mechanism, front feed-rolls to run upon the platen, a card-holding device at the front of the platen and connectible to rise at a line-spacing operation, a finger-piece shiftable to connect the card-holdlng device to the l1ne-spacmg mechanism, and adapted to move the feed-rolls rearwa-rdly out of" the way of the bard-holding device, and a locking mechanism to prevent operation of said finger-piece, normally ineffective, but made effective by movement ofgthe cardholding device away from its normal position. r

3. In a front-strike typewriting machine, the combination with a platen and a papertable to guide sheets to the lower part of the platen, offline-spacing mechanism, a

card-holding device mounted for upwardand downward movement at the'front of. the platen, gears connected with the platen' to rotate therewith, racks adjacent said gears and connected with said dev ce so as to be moved into and out of engagement with said gears to enable the device to be line-spaced with the platen or to be left at rest when the latter is actuated, a fingerpiece, and means actuable' by said fingerpiece for moving both of said racks into and out of connection with said gears.

at. In a front-strike typewriting machine,

jacent said gears and connected to said device so as ,to s-winginto and out of engagement with said gears, a finger-piece,

means, actuated by said finger-piece, for swinging both of said racks into or out of engagement with said gears, devices for holding the card-holding device in itsnormal lower positionyand means whereby the holdingdevices will be shifted to ineffective position when the racks are swung into engagement with the the finger-piece. I I

5. In a front-strike typewriting'machine, the combination with a platen and a papertable to guide sheets to the lower part thereof, of line-spacing mechanism for the platen, an axle for the platen, gears connected with the platen-axle to rotate therewith, a cardholding bar extending lengthwise of the platen atthe front thereof below the printing line, means, including racks to co -op erate with said gears, for connecting said bar to the gears to enable the bar to be advanced by the line-spacing mechanism, a finger-piece, and finger-piece-actuated means to render said connecting means effective or ineffective to cause the cardholding bar to be advanced upwardly with the platen upon actuation of the line-spac ing mechanism. I

6. In, a front-strike typewriting machine, the combination with atra-velling carriage and a platen journaled therein, of a type segment extending away from the platen, a

gears upon actuation of,

ribbon carrier adapted to vibrate and guided by said segment, and a card-carrier adapted to be connected to the platen and to be raised and lowered over the face of the segment.

7. In a front-strike typewriting machine, the combination with a travelling carriage and a platen journaled therein, of a type segment extending away from the platen, a ribbon carrier adapted to vibrate and guided by said segment, a card-carrier adapted to be connected to the platen and to be raised and lowered ove'r the face of the segment, and means for connecting the card-carrier to the platen at will. V

8. In a front-strike typewriting machine, the combination with a travelling carriage and a platen j ournaled therein, of a type segment extending away from the platen, 'a

ribbon carrier adapted to vibrate and guided by SttlCl segment, a card-carrler adapted to be connected to the platen and to be raised and lowered over the face of the segment, means for connecting the card-carrier to the platen at will, front feed-rolls to run upon the platen, means for moving them out of the way of the card-carrier, and a single finger-piece for operating the connecting means for the card-carrier and moving said feed rolls. v

9. In a front strike typewriting machine, the combination with a travelling carriage and a. platen jou'rnaled therein, of a type segment extending" away from the platen, a ribbon carrier adapted to vibrate and guided by'said segment, a'card-carrier adapted to be connected to the platen and to be ra-isedand lowered over the face of the segment, means for connecting the car-can ries to the platen atwill, front feed-rolls to run upon the platen in the path. of the card-carrier, a finger-piece for operating the connecting means and for moving the feed-rolls out of the path of the card-carrier, and devices locking the finger-piece with the feed-rolls out of the path of the cardcarrier.

10. Ina fr0ntstrike typewriting machine, the combination with a platen and a papertable adapted to guide sheetsaround it, of a line-spacing mechanism, a card-holder having ends adjacent to the ends of the platen and adapted to rise vertically in front of the platen, gears upon the platen, racks pivoted to the ends of the card-holder and adapted to mesh with the'gears, and a finger; piece adapted to swing said racks to or from their gears.

11. In a front-strike typewriting machine, the combination witha platen and a papertable adapted to guide sheets around it, of a line spacing mechanism, a cardholder adapted to rise vertically in front of the platen, gears upon the platen, racks pivoted to the card-holder and adapted to mesh with the gears, a channel in each rack, a pin ridineffective.

ving in each channel, and a finger-piece connected to saidpins and adapted to be operated to swing the racks into or out of mesh with their gears. 12. In a front-strike type riting machine, the combination with a plat-en and a; papertable adapted toguide sheets around it, of a line-spacing mechanism, a card -h o lder adapted to rise vertically in front of the platen, gears upon the platen, racks pivoted to the card-holder and adapted ,to mesh with the gears, a channel in each rack, aflpin riding in each channel, a "finger-piece 'connected to said pins and adapted to be 'operated to swing the racks into or out of mesh with their gears, 2. lug normally .holdingthe holder against rising, and a connection whereby operation of the finger-piece to i mesh the racks with the gears makes the lug 13. In a front-striketypewriting machine,

the combination with a platen and a platenframe therefor having ends, of'gear's upon the platen, a card-holding device, including racks pivoted thereto, a pin riding ma channel in each rack, pin-carrying arms pivoted in said ends, a shaft extending across said platen, a rock-arm upon each end of the shaft, and a link connecting each rock-arm to its pln-carry ng arm, to enable the rota- 5 tion of the shaft to swing the racksfto and from the gears.

14. In a front-strike typewriting machine,"

the combination with a platen and a platen ing-frame, but adapted to release it when swung to mesh the racks with the gears.

15. In a front-strike typewriting machine,x the combination with a platen. and a platenframe therefor having ends, of gears upon the platen, a card-holding device, inclmling racks pivoted 'thereto,-a pin riding in a channel in each rack, pin-carrying arms pivoted in said ends, a shaft extending across said platen, a'rock-arm upon each end of. the shaft, a link-connecting each ro'ck arm to its pin-carrying arm, to enable the rotation of the shaft tojswingthe racks to and 125 from th'e'gears, fee'd ro-lls running upon the front. of the platen, and a connection between the feed-rolls and shaft, whereby the rotation of the shaft, to mesh the racks, moves the feed-rolls rearwardlyg 16. In a front strike typewriting machine,

the combination with a platen and a platenframe therefor having ends, of gears upon the platen, a card-holding device, including racks pivoted thereto, a pin riding in a channel in each rack, pin-carrying arms pivoted in said ends, a rock shaft extending across said platen, a rock-arm upon each end of the shaft, a link connecting each rock-arm to its pin-carrying arm, to enable the rotation of the shaft to swing the racks to and from the gears, saidcard-holding device extending across the platen, a lug upon said rock-shaft normally holding the cardholding device, but adapted to release it when swung to mesh the racks with the gears, feed-rolls running upon the front of the platen, and a connection between the feed-rolls and shaft, whereby the rotation of the shaft, to mesh the racks, moves the feedrolls rearwardly. I

17. Ina front-strike typewriting mechine,

i the combination with a platen and a' platenframe therefor having ends, of gears upon the platen, a card-carrying frame, including racks pivoted thereto, apin riding in a channel in each rack, pin-carrying arms pivoted in said ends, a rock shaft extending across said platen, a roclnarm upon each end of the shaft, a link connecting each rock-arm to its pin-carrying arm, to enable the rotation of the shaft to swing the racks, to and from the gears, said card-carrying frame extending across the platen, a lug upon said rock-shaft normally holding the card-carrying-frame, but adapted to release it when ,swungto mesh the racks with the gears, end

plates, the card-frame extending through openings in said end-plates, a bell-crank pivotedupon one of said plates, and comprising an opening through which said. card-carrying-frame also extends, an extension of said openings forming a cam such that the rising of the card-frame swings the bell-crank, a

finger-piece for rocking said shaft,.and a normally ineffective lock for said fingerpiece, including an extension of the bellcrank, the connections being such that the rising of the card-frame swi ngs the bell-,

crank-extension to locking position.

7 18. In a typewriting machine, the combination with a rotatable platen comprising gears, of a card-holder, racks connected to said card-holder and adapted to be thrown adapted to mesh with said gears, a shaft,

comprising lugs, adjacent the card-holder normally overlying it to hold it, and a rockgears, an ear upon each of said ends adapted to hold each rack in mesh with its gear when swung toward it, a pin at the opposite side of each rack adapted to hold its rack against its ear, each pin riding in a channel of its rack, and means for moving said pins to swing the racks to or fromthe platen.

21. In a typewriting machine, the combination with a rotatable platen and a platenframe having ends, ofa card-holder adapted to be connected to the platen, feed-rolls running upon the platen and adapted to be moved rearwardly when the holder is con- 7 nected with the platen, a shaft comprising rock-arms upon which said feed-rolls are r supported, a connection whereby said shaft connects the card-holder to the platen, a finger-piece upon one of said ends adapted to rotate the shaft to move the feed-rolls and connect the card-holder, and a device between the finger-piece andthe shaft to hold the shaft against dropping the feed-rolls from the platen.

22. In a front-strike typewriting machine,

the combination with a platen anda platenframe therefor having ends, of gears upon the platen, a card-carrying-frame, including racks pivoted thereto, a pin riding in a Cl1LI1 nel in each rack, pin-carrying arms pivoted in said ends, a rock-shaft extending across said platen, a rock-arm upon each end of the shaft, a link connecting each rock-arm to its pin-carrying arm, to enable the rotation of the shaft to swing the racks to and from the gears, end plates, said card-carrying frame extending through openings in said end plates, a bell-crank pivoted upon one'of said plates, and comprising an opening through which said card-carrying frame also extends, an extension of said opening forming a cam such that the rising of the card-frame swings the bell-crank, a finger-piece forrocking said shaft, and a normally ineffective lock, for said finger-piece including an extension of the bell-crank, the connections being such that therising of the card-frame swings the I bell-crank extension to locking position.

23. In a front-strike typewriting machine, the combination with a rotative platen, "of a card-holding device at the front of the plat en, a line-spacing device for moving the card-holding device bodily upward to effect.

line-spacing of a card held thereby, and a front feed-roll; for the platen normally in but movable out of the path of the card-holding device. a r

24. In a front strike typewritingmachine,

tantly connecting the cardholding device to the platen and for moving the feed-roll out of the path of the card-holding device, and also for restoring the feed-roll to normal position concomitantly with the disconnection of the card-holding device from the feed-roll. 25. In a front-strike typewriting machine,

the combination with a rotative platen and a paper-table for guiding sheets around beneat-h the platen, of line-spacing mechanism for the platen, a card-holding bar extending lengthwise of the platen at the front thereof below the printing line, gears carried by the ends of the platen, racks extending upward from the ends of said bar and movable into and out of engagement with said gears, a front feed-roll for the platen normally in the path of the card-holding bar as the latter is moved upwardly by the platen, and means including a finger-piece for moving the racks into engagement with the gears and for concomitantly moving the feed-roll out of the, path of the bar.

26. In a front-strike typewriting machine, the combination with a rotative platen and a paper-table for guiding sheets around beneath the platen, of line-spacing mechanism for the platen, a card-holding bar extending lengthwise of the platen at the front thereof below the printing line, g'ears carried by the ends of the platen, racks extending upward from the ends of said bar and movable into i and out of engagement with said gears,

whereby the card-holding bar'may be line? spaced by the platen, a front feed-roll "for the platen normally in the path of the card holding bar as the latter is moved upwardly by the platen, means including a finger-piece 1 for moving the racks into engagement with the gears and for concomitantly moving the feed-roll out of the path of the'bar, anda normally inefiective'device for locking the finger-piece made effective by the upward hne-spacmgmovement of said card-holding bar.

27. In front-strike typewriting machine,

the combination with a rotative platen,of a card-holding bar extendinglengthwise of the platen below the printing line and mounted for substantially vertical movement, gears connected with the ends of the platen, racks extending upwardly from said bar adjacent said gears'and being of sufficient length so as to be movable into and out ofengagement with said gears when the bar isin its lower normal position, and manually' operable means for moving said'racks into and out of engagement with said gears when the cardholding bar is in its lower position.

28. In a front-striketypewriting machine,

the combination with a traveling carriage in-v v eludinga platen, and a platen-operating device, of a rear paper-table adapted to deliver a work sheet to the platen, a normally ine'ffective card-holding device and means connected with said platenoperating device for causing the card-holding devlce to be connected to the platen to be advanced with the,- platen concomitantly with the advancing of said work-sheet by the platen.

ALFRED e. F. KURoWsKIf.

Witnesses:

JENNIE P. THORNE, EDITH B. LIBBEY.

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