US1357195A

US1357195A - Typewriting-machine

Info

Publication number: US1357195A
Authority: US
Publication date: 1920-10-26
Anticipated expiration: 1937-10-26

Description

B. C. STICKNEY.

TYPEWRITING MACHINE.

APPLICATION FILED FEB-1,19.

Patented Oct. 26, 1920.

3 SHEETS-SHEET In 0 eniow B. C. STICKNEY.

TYPEWRITING MACHINE. Y APPLICATION man FEB. I. 1919.

Patented 001:. 26,1920.

3 SHEETS-SHEET 3.

w 0 IL m w 1 UNITED STATES "PATENT OFFICE.

BURNHAM C. STICKNEY, OF" ELIZABETH, NEW? JERSEY,

ASSIGNOR ,TQ UNDERWOOD TYPEWBITER COMPANY, OF NEXV YORK, N. Y., A CDRPORATION 10F DELAWARE.

TYPEWRITING-MACHINE.

Specification of Letters Patent.

Patented oer. 2c, 1920.

Application filed February 1, 1919. Serial No. 274,399.

To all whom it mag concern Be it known that I, BURNHAM C. STICK- NEY, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Typewriting-Machines, of which the following a specification.

This invention relates to typewriting chines and is herein disclosed as applied to an Underwood standard typewritingma chine, employing a well-known'kind 01' fanfold web for the reproduction of several copies of writing upon a given form. EX- cept in certain types of typewriting machines, known as the fan-told billing machines, the manipulation of carbon sheets necessary to make duplicate and triplicate copies has been extremely annoying. In machines of the last-mentioned type, the difficulty of repositioning the carbon sheets relatively to the worl -sheets hasbeen overcome by making the typewriter platen shift able to permit the work-sheets and carbon sheets to be straightened out, with the result that it is comparatively easy to shift the carbon sheets while still remaining interleaved between the work-sheets.

According to the present invention, such shifting of the platen may be unnecessary. liloreover, the device is adapted to be ap plied to an ordinary typewriting machine, without involving such reconstruction of the carriage as is usually necessary in the machines of the fan-fold billing kind. To obtain these and other results, I have found it advantageous to provide a structure mounted in the usual platen frame of an Underwood typewriting machine and extending upward. In order toobtain straight stretches of webs for the repositioning of the carbon sheets relatively to the work-sheets, I have found it desirable to mount the carbon sheets upon rollers in the frame above the platen, and to provide guiding devices for separating the carbon sheets and the work-sheets, so that they may move relatively to each other without friction upon one another. By using rollers, the guiding devices may be much shorter than the length of carbon sheet utilized, and

may become practically. mere 'devices for separating the carbon sheets from the web if desired. 7

The structure mounted upon the platen frame may comprise end brackets or devices in which the rollers carrying the carbon sheets are journaled, and may also comprise feed-rolls for feeding the carbon sheets and the work-sheets together, said feed rolls being advantageously geared to the platen,

so that they may serve not only for the repositioning of the work-sheets after being repositioned relatively to the carbon sheets, but may also serve for line-spacing and the other purposes 0r typewriting. If the platen is provided with the usual feed rolls, the usual casting ofi key may serve to release both the usual feed rolls and the feed rolls above the platen. After the worksheets have been fed forward beyond the carbon sheet rollers, the work-sheets may be brought together, so as to be severed by a single operation oi a knif and all may e positioned for severing by gaging against the end-gage.

It a fan-told web is used, the guiding devices may comprise a slitting knife adapted to slit the web into its separate sheets in order to permit the web sheets to be separated to allow the carbon paper to be positioned relatively to them. The rollers that carry the carbon paper may be normally tensioned by springs tending to wind up the paper, but may be detained by ratchet pawls to enable the carbon sheets when unrolled to be held unrolled. Thus the carbon sheets and the webs may be so positioned as to permit them to be grasped betweenthe afore mentioned feed rolls, and to be fed rearwardly by said feed rolls down past the printing point.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure-l is a face view, largely broken away, of an Underwood typewriter carriage having my invention applied thereto.

Fig.1 is a detail view, partly in section, showing the mounting of a carbon roll.

Fig. 2 is a perspective view of the webslitting devices as seen from above.

Fig. 3 is a fragmentary, separated, perspective view of an upper feed roll and some associated mechanism.

Fig. 4 is a side view, showing the connections between the casting off means and the feed rolls.

Fig. 5 is a fragmentary, perspective view of a carbon sheet roller.

Fig. 6 is an end view, showing the ratchets for the carbon sheet rollers and a handle for releasing them.

Fig. 7 is an end View from the opposite side, showing stops for the carbon sheet rollers.

Fig. 8 is a sectional, side view of the parts seen in Fig. 1, with the feed rolls cast off and ready to have the sheets of the web severed.

Fig. 9 is a diagrammatic perspective View, showing the work-sheets at the beginning of writing on a form.

Fig. 10 is a similar view, showing the position at the end of writing on a form.

Fig. 11 is a view similar to Fig. 10, with the work-sheets further advanced to bring the carbon sheets clear of all the curves in the work-sheets to permit their readjustment relative thereto.

Fig. 12 is a perspective view, showing the parts adjusted as in Fig. 8.

Fig. 13 is a fragmentary, perspective view, largely broken away, of the guides for the worksheets.

In the Underwood typewriting machine, a fan-fold web or plies of other work-sheet 20 are led from the rear of the platen frame 21, down over a paper-table 22, beneath a platen 23, the platen being journaled in ends 24: of the platen frame. In order to hold the work-sheet against the platen and to cause it to advance at the operation of the usual line-space slide 25, which is effective through the usual pawl 26 upon the linespace wheel 27, there are provided rear feed rolls 28 and front feed rolls 29, which are mounted in frames 30, journaled on a shaft 31 and adapted to be cast off by rotating the usual casting off shaft 32. For operating this casting off shaft, there is provided the usual handle which is connected by a link 34: to a rock arm 35 upon the shaft 32, so that when the handle is depressed, the flat cam faces 36 of the shaft 32 will spread rock arms 37 upon the frames 30 against the tension of springs 38, which usually hold the rolls against the platen.

According to the present invention, there are provided

feed rolls

39 and 40 above the platen, which may either take the place of the

feed rolls

28 and 29 or may supplement 7 them, and the feed rolls 39 and a0 may be adapted to feed forward the work-sheet 20, because the feed roll 40 is geared to the platen by an intermediate idle pinion 4C1, meshing with a pinion 12 fast upon the nannies platen axle and with a pinion 43 fast upon the axle it of the feed roll 10, the pitch diameters of the pinions being so adjusted as to cause t 1e feed roll 10 to feed the worksheet 20 forward at the same rate as the platen tends to turn it. The

feed rolls

39 and 40 may be normally forced together by means of a spring 58, which bears against arms 45 and 16, upon which the feed rolls 39 and 10 are respectively journaled by means of their axles 17 and 1 1.

Whenever it is desired to move the worksheets relatively to the platen, the handle 33 may be shifted to cast off the rolls 39 and 10 from the work-sheet, thereby releasing the work-sheet and at the same time casting off the

feed rolls

28 and 29 if the latter are employed. To enable the feed rolls 39 and 4:0 to be thus cast off, the arms 15 and 16, which may be identical and support each end of the feed roll axles or shafts 4.7 and 141, are journaled in stub shafts 19 fast upon

brackets

50 and 51, which are held by screws to the usual

top plates

52 and 53 of the platen frame, said stub shafts lying within the platen frame 21.

The work-sheet 20 is herein shown as fanfolded and as comprising a front sheet or web 5 1, a second sheet or web 55, a third sheet or web 56 and a back sheet or web 57, all fan-folded lengthwise and integral with the front sheet 5s. W hen such fan-folded sheets are employed, they are preferably slit before they reach the feed rolls 39 and 40, and, for this purpose, there are provided a series of sharp edged, pointed slitting knives 58 fast in a paper guiding frame 59, which is fast to the

brackets

50 and 51.

The paper guiding frame 59 is herein disclosed as comprising a series of

plates

60, 61, 62, 63 and 6 1, between which are adapted to be guided the thicknesses of webs 5 1, 55, 56 and 57, alternately with a front carbon sheet 65, a central carbon sheet 66 and a rear carbon sheet 67, said carbon sheets being respectively fast to

rolls

68, 69 and 70. These rolls are journaled in the

brackets

50 and 51 in a manner which will be hereinafter disclosed. The

plates

60, 61, 62, 63 and 6 1, forming the paper or sheet guiding frame, with the exception of the outer plates, are advantageously straight, with the result that carbon sheets and work-sheets lying between them will lie perfectly straight, and thus slip over the plates and over each other with little orno friction,thus permitting the carbon sheets, when lying in or above said sheet-guiding frame, to be shifted relatively to the work-sheets. The paper or sheet-guiding frame 59 extends down toward the top front of the platen and slants rearwardly therefrom. In addition to the sheet-- guiding frame just described, there are provided other guiding devices for the sheet including a front guide plate 71 and a rear 130 guide plate 72 adapted to carry the front web 54 and the rear web 57, respectively, away from the adjacent carbon sheets.

In setting up a new web or webs, as the case may be, and new carbons in the machine, as at the beginning of a days work, the carbon sheet 65 is advantageously the first'to be threaded into position. This may be done by rotating the carbon roll 68 backwardly while guiding the carbon sheet by inserting a finger through one of the front openings 73 in the guide plate 71. If desirable, or necessar the typist may also insert a finger from the rear through

openings

75 and 76 in the rear supporting guide plate 72, and in a V-shaped extension 78 of the guide plate 64 To rotate the roll backwardly to unwind the carbon sheet, there is provided a handle 80 fast to the roll and projecting beyond the bracket 51. The typist rotates the roll backwardly by its handle 80 until the carbon sheet arrives at the lower edge of the guide 59, as shown in Figs. 8 and 12. There is a spring 81 normally tending to wind up the roll, but this spring is prevented from being effective at this time because a pawl 82 is pressed by a spring 83 against the ratchet wheel 84 fastened to the roll 68 by being fastened to an extension 85 of its axle.

hen the carbon sheet has thus been properly positioned, the typist may position a stop 86 to render the pawl 82 unnecessary. To accomplish this, the stop 86 is formed as a member, comprising an arc edge 87 adapted to lie in a thread 88, said thread being adjustably fastened to the roll, and having an abutment or stop 89, so that the turning of the roll will be limited by the stop when the stop strikes the abutment 89- as the roll. turns in one direction. For adjusting the thread and its abutment upon the roll, the axle 91 of the roll is journaled in an opening in the bracket 50 and is provided with a shoulder 92 bearing against the inner face of the bracket, so that the axle has a short extension 93 terminating in a shoulder 96%, against which a sleeve 95 is adapted to bear, said sleeve having the thread 88 out upon it. To adjust the sleeve 95 upon the axle 91, there is provided a thumb screw 96., which is adapted to be screwed down upon a threaded extension 97 of the axle 91, and, when so screwed down, holds the sleeve 95 jammed between the shoulder 92 and the thumb screw. When the carbon sheet 65 has been adjusted in the manner described. the sleeve is adjusted upon the carbon roll with the stop 86 against the stop 89, thus preventing any backward rotation of the roll after the pawl 82 is released from the ratchet 84:.

After the first or front carbon sheet 65 has been thus adjusted, it will be usually. found most convenient to adjust the second sheet 55 of the web 20, the web 20 having been previously slit into its sheets for this purpose. he sheet 55 is carried up from be tween the

guide plates

60 and 61 past the feed rolls and so, and the upper ends of these guide plates, and then is carried behind a roll extension 98 of the guide plate 71, and then in front of and over a roll extension 99 of a guide plate 100, which latter is adapted to hold the web clear of the roll. (59. In order to facilitate the guiding of the web 55 over the guide plate 100, linger openings 101 are provided in the guide plate. The web from the guide plate is carried upwardly through an opening 102 and past a knife 103, which is adapted to sever the ebs at the opening, as will hereinafter appear.

The typist will next usually lind it ad vantagcous to thread the carbon sheet 55. which may be done in the same way as the carbon sheet was threaded, except that the carbon sheet 60 passes between the

guide plates

61 and 62 in the guide 59. Its bot-- tom is alined with the bottom of the sheet 65. To enable it to be turned backwardly and controlled, its roller 69 is provided with a ratchet wheel 84, a pawl 82, a sleeve 95, a stop 86, and a thread 88, substantially like those provided for the roll 68, so that, when positioned, its pawl may be made unnecessary by the adjustment of its sleeve 95.

Next the typist will usually find it most convenient to thread the web-sheet 56 by carrying it up between the'plates 62 and (S -5 of the guide 59, past the roll and rearwardly over a curved guide 104, which is adapted to hold it clear of the carbon roll 70, and then behind the turned-over extension 105 of the plate 100, and thence upwardly through the opening 102 and past the knife 103. v

The typist will next usually find it convenient to thread the carbon sheet 67. In doing this, the typist drops it downward by rotating its roll rearwardly and guiding it between the

plates

63 and 64; of the guide 59, until its lower edge is in alincment with the other carbon sheets, in which position it is held by a pawl 82 like the above-described pawl 82. Its roll has a sleeve 9:) adapted to be adjusted against its stop 89. so that the carbon sheet, like the other carbon sheets, will be held in position independently of its ratchet wheel. and pawl.

Then the typist will find it convenient to thread the rear web-sheet upwardly, carrying it in front of the feed roll 10, behind the ii-shaped extension of the plate 6% and in front of the rear guide 72, the V-shaped plate 78 carrying it clear of the roll 70.;so that the web 57 comes out of the opening 102 adjacent the knife 103. Finally, thh typist, may thread the front web-sheet 54: in front of the guide plate 106, which forms the front plate of the guide The typist carries the front web behind the feed rollii.

then over the guide 71, which holds it clear of the carbon roll 68, and thence carries it upwardly through the opening 102 and past the knife 10 hen the webs and carbon sheets have all been threaded in this manner, the typist may :u'tuate linger-piece 108 to swing the pawls 82 clear of their ratchet wheels To accomplish this, each pawl may be in the form of a b ll-crank having a tail 109, all of said tails overlying a circular extension 110 around the pivot 111 of the finger-piece 108, so that when the linger-piece 108 is swung, pins 112 upon said extension will strike the tails of the pawls and carry the pawls clear of the ratchet wheels. 'l he linger-piece 108 may be nori'nally detained in its ineliective position by a spring 113, having; a hollow 1.11, adapted to engage a pin 115 upon the finger-piece. ll hen swung to eflective position to release the pawls, an extension 116 of the spring may hold the finger-piece against a pin 11'? adapted to limit its throw.

The typist may then swing the handle or fingenpiece 33 to carry the feed rolls 39 and 410 against the platen, as well the feed rolls 2S and 29, if the latter are provided. The connections, whereby the linger-piece 33 actuates the feed rolls 39, include a lug 118 upon the usual link ea, a link 119 being pivoted to said lug and also pivoted to an arm 120 of a rocking release frame 121. This release frame is pivoted upon the shafts 19 upon which the arms -15 and a6 are jour naled, and when swung to releasing position, carries a pair of pins 123 and against a pair of cam lugs 125 and 126 upon the arms 45 and 1-6, respectively, thus cumming the arms apart against the pressure of the strong spring 18. When the feed rolls 39 and a0 grip the work-sheets and the carbon sheets between them, the platen may be re volved baekwardly by the usual handle 12? to bring the top writing; line upon the outer web 54L to the printing point at the usual wing scale 128. The typist may then proceed to write by actuating the ty )e keys and the usual line-space handle, thus alternately writingand advancing the work-sheets until the form is filled out or the desired printed matter is written, which brings the carbon sheets to the position seen in Fig. 10.

The typist then casts oil the feed rolls 39 and 10 and either rotates the platen forwardly or draws upon the worksheet-webs, which project from the opening 102, to bring the last writing line of the next form just above the lower end of the

carbon sheets

65, 66 and 67. To enable this drawing; of the web to be measured automatically, the brackets support an adjustable end upon a gage arm 180, said gage arm being; fast upon the top plate 131 carried by the

brackets

50 and 51. When the webs have been thus gaged, the typist turns the finger-piece 33 to permit the spring" 18 to throw the feed rolls E59 and 420 against the worksheets, so that if the platen is new rotated backwardly, the work-sheets will draw the

carbon sheets

65, 36 and (37 baclzwardly with them against the tons on of the springs 81, which normally tend to wind upthe carbon sheets upon their rollers. "lhe typist rotates the platen bachwardly until the first *riting line upon the orvside web 5 1 is at the wing scales 128, and then proceeds to write upon tne web and actuate the line-space handle as before.

if the form or written out matter happens to be of the length from the opening 102 to the wing scale 128, t is typist may actuate the lcnife 103 to sever the webs at the end of writing the second form, see Fig. 10, and then turn the platen forwardly to bring the carbon sheets to the Fig. 8 or 11 position, and then release the feed rolls 39, as before, see Fig. 12, and the webs against the end gage 129. the form is only a fraction of the length between the knife 103 and the wing scale 128, the typist may best delay the severing until the requisite number of forms have been written to lill up this distance. Any fractional length of a form will be automatically talren care of by gaging the ends of the webs against the end gage 129, and then severing by actuating the 1 31118, care being taken to sever the webs immediately after the writing of form and before the webs and carbon sheets reach the Fig. 12 position, since, if severed after gaging and before being); turned bacliwardly, the ends of the webs will fall below the knife and require rethreading. The knife 103 is advantageously pivoted on a bracket 135 projecting from the bracket 51, and is provided with a handle 1% for actuating it. This enables the webs to be severed even though they are not held at the bottom by the feed rolls.

in order to enable

new rolls

68, 69 and 70, carrying carbon paper, to be inserted, the extension of each roll shaft may be journal-ed in a plate 137 fitting a corresponding opening in the bracket 51, and provided with a lug 138 through which a screw 139 is adapted to pass to hold the plate in position on the bracket. W' hen the screw 1-39 is removed and the thumb screw 96 taken oil, the roll may be withdrawn through the opening left by the removal of the plate 137.

The object of having a screw-thread 88 to form the track between the

stops

86 and 89 is to enable any desired number of rotations of the carbon-paper roll to be had without arresting the roll. 1n order to enable t e lug or stop 86 to travel in this thread, it is slidably mounted on a pin 1 10 fast in the bracket 50.

t will be observed that the carbon sheets follow straight paths when they are clear of the platen, and that the web-sheets follow curved paths, ,T he guide

plates

71, 72, 104, 100 and 105, may be so located that the distance each web travels from the feed rolls 39 and 40. to the opening 102 is identical, with the result .that when the knife severs one web at the desired point, it severs them all at the same point. If desired, the front plate 106 and therear plate 64; may be provided with flaring ends 145 and 146to enable the carbon sheetsto be more easily guidedinto the properposition. The feed rolls 39. and 40 advantageously work in openings 147 in the guide 59, which are considerably longer and widerthanthe rolls, thus minimizing the distortion of the paper and the carbon sheets as they emerge from and enter between the

plates

60, 61, 62, 63, 64, etc.

In orderto make sure that the threaded web-

sheets

54, 55, 56 and 57 do not drop out of the opening 102, after being severed, the plate:l31 may be provided with L-

plates

141 and 142, having flaring flanges,.between which the webs are guided, said L-plates being held to the bottomof the plate by screws 143, one of said screws also passing through .the bent-over bottom 14% of the end-gage arm 130, and thus servingto hold said arm in position. It willbe observed that if separate webs are used and thebottom feed rolls 28 and 29 are omitted, the top feed rolls 39 and 40 will feed both the front and the rear webs along a straight length, with the result-thatthere will be no relative creeping of the webs as they pass around the .platen. This gives the present device a utility in connection with separate webs which is impossible tothe same. extent where feed rollsare depended upon which hold a worksheet against a curved surface, like the platen. The carbon rolls 68, 69 and 70 may be regarded as holding devices for carbon sheets, and the

plates

106, 60, 61, 62, 63 and 64 may be regarded as separating devices for separating the carbon sheets from the work-sheets, or as work-supporting de vices, The plates T1, 100, 72, etc., also may be regarded as work-supporting devices for the webs or work-sheets, and the lugs or stops 86 form devices for arresting the carbon sheets at the limit of their travel.

In order to facilitate the threading of the carbon sheets, the

plates

106 and 64 may be flared out, as indicated at 145 and 146, thus affording a large enough opening between them and the adjacent plates to readily thread the carbon sheet through. In order to facilitate the threading of the central carbon sheet, the plate 62 may. extend higher than the plate in front of it .by a small amount, advantageously in the form of fingers, thus enabling the typist, when threading the central carbon sheet, to allow the carbon sheet to fall upon said fingers and be guided by them down in betweenthe plates,

If desired, similar fingersmaybeprovided for assisting the threading of the worksheetsahthe bottom of the lowerends of the

plates

61 and 63.

Variations may be resorted to within the scope of the invention, and portionstofthe improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a platen, of a frame above the platen comprising devices for supporting Work-sheets above the printing line upon the platen, separate devices forsupporting carbon sheets, fee,d rolls above the printing line on the platen, adapted to seize the worksheets together with the carbon sheets to feed them to said devices, and means for driving the rolls at the same peripheral speedasthe platen.

2. In a typewriting machine, the combination with a platen, ofaframe above the platen comprising devices for supporting work-sheets above the platen, separate devices for supporting carbon sheets, feed rolls above the printing line on-thepla-ten, adapted to seize the worksheets together with the carbon sheets, means for driving the rolls at the same peripheral speed as the platen, bottom feed rolls adapted to-hold the work-sheets against the platen, and a single device for making all of said feed rolls simultaneously effective vor ineffective.

In a typewriting machine, the combination with a platen, of .aframe above the platen, feed rolls abovetheprinting.line on the platen, a carbon-sheetsupporting device on the frame above said-feed rolls, worksheet-supporting device also. upon the frame, means for causing the carbon-sheet-supporting device to retract the carbon shoot upwardly between two work-sheets, and means for arresting the carbon sheet in position to be fed by the feed rolls.

4. In a typewriting machine, the combination with a platen, of a frame above the platen, feed rolls above the printing line on the platen, a carbon-sheet-supporting device on the frame, a work-sheet-supporting device also upon the frame, means for causing the carbon-sheetsupporting device to retract the carbon sheet between two worksheets. means for arresting the carbon sheet in position to be fed by the feed rolls, and a finger-piece actuable to release the feed rolls to permit the carbon sheet to be readjusted relatively to the work-sheets.

5. In a typewriting machine, the combination with a platen, of a support'for worksheets and a carbon sheet above the platen, devices for separating the work-sheets and the carbon sheet to enable the carbon sheet to be moved relatively to the work-sheets, and feed rolls on said devices adapted to cause. all said sheets to be .fed 5 together.

6. In a typewriting machine, the combination with a platen, of a support for worksheets and a carbon sheet above the platen, devices for separating the work-sheets and the carbon sheet to enable the carbon sheet to be moved relatively to the work-sheets, feed rolls on said devices adapted to cause all said sheets to be fed together, other feed rolls adapted to hold the sheets against tne platen, and means for simultaneously making all said feed rolls effective or ineffective.

7. In a typewriting machine, the combination with a platen, of a support for work-sheets and a carbon sheet above the platen, feed rolls above the platen, plates above and below said feed rolls to separate the carbon sheet from the work-sheets, means for casting off the feed rolls, and means for automatically moving the carbon sheet relatively to the work-sheets when said feed rolls are cast off.

,8. In a typewriting machine, the combination. with a platen, of a support for work-sheets and a carbon sheet above the platen, feed rolls above the platen, plates above and below said feed rolls to separate the carbon sheet from the work-sheets, means for casting off the feed rolls, means for automatically moving the carbon sheet relativelv to the work-sheets when said feed rolls are cast off, and connections whereby said feed rolls, when effective, drive the work-sheets at the peripheral speed of the platen.

9. In a typewritingr machine, the combination with a platen, of devices for carrying work-sheets and a carbon sheet around the platen, plates for separating; the sheets along a straight stretch thereof, to enable the carbon sheet to be moved relatively to the work-sheets, and feed rolls at one edge of said plates adapted to he made effective for seizing said sheets to feed the sheets together.

107 In a typewriting machine, the comhination with a platen, of devices for carrying work-sheets and a carbon sheet around the platen, plates for separating the sheets alonga straight stretch thereof, to enable the carbon sheet to be moved relatively to the work-sheets, feed rolls at one edge of said plates adapted to be made elfective for seizing said sheets to feed the sheets to gether, means for causing said feed rolls to turn at the same peripheral speed as the platen, and a finger-piece for making said feed rolls effective or ineffective, at will.

11. In a typewriting machine, the com bination with a platen, of devices for carrying worksheets and a carbon sheet around the platen, plates for separating the sheets along a straight stretch thereof, to enable ca on sheet to he moved relatively to the work-sheets, feeding devices for seizing said sheets at one edge of said plates to mamas cause the sheets to feedtogether, and feed rolls adapted to hold the sheets against the platen to cause them to feed together when moved to the feed rolls by said feeding devices.

12. in a typewriting machine, the combination. with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worlrsheet-supporting devices mounted in said brackets, adapted to guide work-sheets away from the platen, and carbon-sheet-holding rollers positioned between said work-sheets, adapted to automatically retract the carbon sheets from between the work-sheets, and adapted to permit the carbon sheets to be retracted backwardly with the work-sheets around the platen.

13. In a typewriting machine, the comllll tion with a platen frame and a revoluble platen therein, of ends for frame, brackets mountedv upon said ends, worksheet-supporting devices mounted in said rackets, adapted to guide worksheets away from the platen, carbon-sheet-holding rollers POSltlOl-ltltl between said work-sheets, adapted to automatically retract the carbonsheets from between the work-sheets, and adapted to permit the carboirsheets to be retracted baclrwardly with the WOIlZ- heets around the platen, feed rolls journa in said brackets above the platen, and punons cminectingg' said fed rolls to said platen to cause the worksheets and the carbon-sheets to be moved baclmvardly when the plate, is

turned backwardly.

1 L. ln a typewriting machine, the combination with a platen frame and a revoluble plate therein, of ends for said frame, brackets mounted upon said ends, worksheet-supporting devices mounted in said lnxaclwts, adapted to guide work-sheets away fro i the platen, carbon-sheet-holding rollers positioned between said work-sheets, adapted to automatically retract the carbon sheets between the worl-:sheets, and adapted to permit the carbon-sheets to be retracted backwardly with the work-sheets around the platen, and, plates for separating the worksheets and the carbon-sheets, to permit the carbon-sheets to be readjusted relatively to the work-sheets.

15. In a typewriting machine, the combination with a platen frame and reroluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-supporting devices mounted in said brackets, adapted to guide work-sheets away from the platen, carbon-sheetholding rollers positioned between said work-sheets, adapted to automatically retract the carbon sheets between the work-sheets, and adapted to permit the carbon sheets to be Mu 1'6- tracted backwardly with the work-sheets around the platen, feed rolls journals-d in said brackets above the platen, )inions connecting said feed rolls to said platen to cause the work-sheets and the carbon sheets to be moved backwardly when the platen is turned backwardly, and plates for separating the work-sheets and the carbon sheets, to permit the carbon sheets to be readjusted relatively to the Work-sheets.

16. In a typewriting machine, the combination with a platen frame and a revol'uble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-supporting devices mounted in said brackets, adapted to guide work-sheets away from the platen, carbon-sheet-holding rollers positioned between said work-sheets, adapted to automatically retract the carbon sheets between the work-sheets, and adapted to permit the carbon sheets to be retracted backwardly with the work-sheet. around the platen, and devices for adjustably limiting the turning of said rollers.

17. In a typewritinp; machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worl sheet-supporting devices mounted in said brackets, adapted to guide work-sheets away from the platen, carbon-sheet-holoing rollers positioned between said work-sheets, adapted to automatically retract the carbon sheets between the worksheets,- and adapted to permit the carbon sheets to be retracted backwardly with the worksheets around the platen, plates for separating the worksheets and thecarbon sheets, to permit the carbon sheets to be readjusted relatively to the work-sheets, and devices for adjustahly limiting the turning of said rollers.

Hi. In a typewritinsr machine, the combination with a platen frame anda revoluble platen therein, 0t ends for said frame, brackets mounted upon said ends, teed roll ers iourna'led in said brackets, separating sheets to said feed rollers, devices for separ tely guiding the work-sheets mit'wardl in each other, carbon-sheet-supporting ces positioned between the paths of the said o k-sheet all havin e len-Trth. for brin a d a knife for severing where thev a e brought devices for guiding work-sheets and carbon printing? line upon the platen, a

20. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, or ends for said frame, ackets mounted upon said ends, workeet-guiding devices above the platen, mounted in said brackets, carbon sheet rollalso journaled in said brackets and comprising rolls of carbon sheets, ratchets for said rollers adapted to hold the rolls partly unrolled, springs normally tending to roll up said rolls, stops for adjustably limiting the turning of said rollers, and means for making said ratchets ineffective.

21. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet guidinp; devices above the platen, mounted in said brackets, carbon sheet r01"- ers also journaled in said brackets and com prising rolls of carbon sheets, ratchets said rollers adapted to hold the rolls partly unrolled, springs normally tending to roll up said. rolls, stops for adjustably limiting; the turning of said rollers, means for making said ratchets ineffective, uiding and separating devices for the work-sheets and the carbon sheets, and feed rollers geared to said platen, adapted to feed the carbon sheets and the work-sheets backwardly to the platen.

22. In a typewritim; machine, the combination with platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-guiding devices above the platen, mounted in said brackets, carbon sheet rollers also iournaled in said brackets and comprisnp rolls of carbon sheets, ratchets for said rollers adapted to hold the rolls partly unrolled, springs normally tendi. 1 to roll up said rolls, stops tor a limiting; the turning of said rollers. mean.

for making sad ratchets inefi efitive. teed rollers for teedin the carbon sheets and the worksheets nether to the platen. ant; feed rollers adapted to hold the sheets against the platen. 23. In a typewr machine, the combination with a platen Hume and a revaluble platen therein, oi ends fo said 'ame, brackets moun' said ends. worksheet-s1 'di i a pted to guide a front we: tnrwarr v and a rear wor sheet rearwai-rllv as thev rise from the roller ion"- naled between the oaths of tho work-she adapted to h V for feeding the we of their contact with the work 1e combi revoltlde said frame,

to guide a suds "f'ior on .l

adapted h ke work-- sheet-g1 4 idin front work-sheet forwardly and a rear work-sheet rearwardly as they rise from the printing line upon the platen, a roller journaled between the paths of the work-sheets, adapted to hold a carbon sheet, feed rollers for feeding said work-sheets and said car bon sheet independently of their contact with the platen, and separating devices for separating the carbon sheet and the worksheets.

25. in a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journaled in said brackets, means for guiding a front work-sheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind the other carbon sheet roller, means for guiding a central. work-sheet clear of both said rollers, and clear of the carbon sheets when once separated therefrom, and means for separating the carbon sheets and the worksheets.

26. In a typewriting machine, the combination with a platen frame and revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journaled in said brackets, means for guiding a front worksheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind the other carbon sheet roller, means for guiding a central work-sheet clear of both said rollers, and clear of the carbon sheets when once separated therefrom, means for separating the carbon sheets and the worksheets, and a pair of feed rollers for feeding the carbon sheets and the worksheets backwardly to the platen.

27. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journalcd in said brackets, means for guiding a front work-sheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind. the other carbon sheet roller, means for guiding a central work-sheet clear of both said rollers, and clear of the carbon sheets when once separated therefrom, means for separating the carbon sheets and the worksheets, a pair of feed rollers for feeding the carbon sheets and the work-sheets backwardly to the platen, and a pair of feed rollers adapted to hold the work-sheets against the platen.

28. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journaled in said brackets, means for guiding a front work-sheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind the other carbon sh et roller, means for guiding a central work-sheet clear of both said rollers,

and clear of the carbon sheets when once separated herefrom, means for separating the car on sheets and the work-sheets, a pair of feed rollers for feeding the carbon sheets and the work-sheets backwardly to the platen, and means for gearing said feed rollers to turn at the same peripheral speed with the platen.

29. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journaled in said brackets, means for guiding a front work-sheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind the other carbon sheet roller, means for guiding a central work-sheet clear of b th said rollers, and clear of the carbon sheets when once separated therefrom, means for separating the carbon sheets and the work-sheets, means normally tending to wind the carbon. sheets on their rollers, and stops for adjustably limiting the turning of the rollers 30. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a pair of carbon sheet rollers journaled in said brackets, means for guiding a front work-sheet in front of one carbon sheet roller, means for guiding a rear work-sheet behind the other carbon sheet roller, means for guiding a central work-sheet clear of both said rollers, and clear of the carbon sheets when once separated therefrom, means for separating" the carbon sheets and the work-sheets, means normally tending to wind the carbon sheets on their rollers, stops for adj ustably limiting the turning of the rollers, and ratchets for temporarily holding the rollers while the stops are being adjusted.

31. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends and extending above the platen, carbon sheet-supporting devices adapted to move carbon sheets between the brackets, devices for separating work-sheets and carbon sheets, extensions of said devices for bringing the work-sheets together, a single knife for severing the work-sheets when thus brought together, and a for gaging the length of work-sheet to be severed.

32. In a typewriting machine the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends and extending above the platen, carbon-sheet-supporting rollers journaled in said brackets, and normally tending to wind up the carbon sheets,

devices for separating work-sheets and carbon sheets, a knife for severing the worksheets, and a gage for gaging the length of work-sheet to be severed.

33. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends and extending above the platen, carbon-sheet-supporting rollers journaled in said brackets, means for guiding work-sheets in front of and behind and between said rollers, said means including guide-plates having openings adapted to admit the typists fingers, and feed rolls journaled in said brackets for feeding worksheets and carbon sheets backwardly to the platen.

34. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, carbon-sheetsupporting rollers journaled in said brackets, means for guiding work-sheets in front of and behind and between said rollers, said means including guide-plates having openings adapted to admit the typists fingers, feed rolls journaled in said brackets for feeding work-sheets and carbon sheets back wardly to the platen, and feed rolls adapted to hold upon the platen work-sheets so fed.

85. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, carbon-sheetsupporting rollers journaledin said brackets, means for guiding work-sheets in front of and behind and between said rollers, said means including guide-plates having openings adapted to admit the typists fingers, feed rolls journaled in said brackets for feeding work-sheets and carbon sheets backwardly to the platen, and gears for causing said feed rolls to drive the work-sheets with the same speed as the periphery of the platen.

36. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, a carbon sheet roller journaled in said brackets, and a removable plate in one bracket adapted to permit the carbon sheet roller to be removed therethrough.

37. In a typewriting machine, the combi-. nation with a platen frame and a revoluble platen therein, of ends for said frame,brackets mounted upon saidends, a carbon sheet roller journaled in said brackets, a removable plate in one bracket adapted to permit the carbon sheet roller to be removed therethrough, a spring normally tending to wind up said roller, anchored in said plate, and a ratchet wheel fast to the roller for controlling the spring.

38. In a typewriting machine, the combithrough, and a stop-sleeve adapted to be made fast to the opposite end of the roller, comprising a thread having abutments to limit the turning of the roller.

39. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends and eX- tending above the platen, a pair of feed rollers, a pair of swinging brackets supporting each feed roller, and journaled in said firstmentioned brackets, a spring normally moving said feed rollers toward each other to seize work-sheets therebetween, and a fingerpiece for separating said feed rollers.

40. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-guiding devices adapted to guide a front work-sheetforwardly and a rear worksheet rearwardly, a roller journaled between ,the paths of the work-sheets, adapted to hold a carbon sheet, feed rollers for feeding said work-sheets and said carbon sheet, and separating devices in the form of plates having openings in which said rollers work for separating the carbon sheet and the work-s ieets.

41. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-guiding devices adapted to guide a front work-sheet forwardly and a rear worksheet rearwardly, a roller journaled between the paths of the work-sheets, adapted to hold a carbon sheet, plates for separating said sheets, and feed rollers engaging said sheets through openings in said plates.

42. In a typewriting machine, the combination with a platen frame and a revoluble platen therein, of ends for said frame, brackets mounted upon said ends, worksheet-guiding devices adapted to guide a front worksheet forwardly and a rear worksheet rearwardly, a roller journaled between the paths of .the work-sheets, adapted to hold a carbon sheet, plates for separating said sheets, feed rollers engaging said sheets through openings in said plates, connections whereby said feed rollers turn at the peripheral speed of the platen, and means for making said feed rollers effective or ineffective, at will.

43. In a typewriting machine, the combination with a platen, of a frame above the platen comprising devices for supporting work-sheets above the platen, separate devices for supporting carbon sheets, feed rolls above the printing line on the platen, adapted to seize the work-sheets together with the carbon sheets, means for driving the rolls at the same peripheral speed as the platen, means for guiding the front and back worksheets away from the central sheets on leaving said feed rolls, and plates between said rolls for separating intermediate sheets.

44. In a typewriting machine, the conibination with a platen, of a frame above the platen comprising devices for supporting worksheets above the platen, separate devices for supporting carbon sheets, feed rolls above the printing line on the platen, adapted to seize the work-sheets together with the carbon sheets, means for guiding the front and back work-sheets away from the central sheets on leaving said feed rolls, and plates between said rolls for separating intermediate sheets.

45. In a typewriting machine, the combination with a platen, of a support for fanfolded work-sheets and a carbon sheet above the platen, devices for separating the worksheets and the carbon sheet to enable the carbon sheet to be moved relatively to the work-sheets, feed rolls on said devices adapted to cause all said sheets to be fed together, and slitting knives for separating the fan folded sheet into its sheets.

46. In a typewriting machine, the combination with a platen, of a support for fanfolded work-sheets and a carbon sheet above the platen, feed rolls above the platen, plates above and below said feed rolls to separate the carbon sheet from the work-sheets, means for casting off the feed rolls, means for antomatically moving the carbon sheet rela tively to the worksheets when said feed rolls are cast off, and knives adjacent said plates for slitting the fan-folded sheets into their separate sheets.

47. In a typewriting machine, the combination with a platen, of devices for carrying fan-folded work-sheets and a carbon sheet around the platen, plates for separating the sheets along a straight stretch thereof, to enable the carbon sheet to be moved relatively to the work-sheets, feed rolls at one edge of said plates adapted to be made effective for seizing said sheets to feed the sheets together, and knives adjacent said plates for slitting said fan-folded sheet into BURNI-IAM O. STICKNEY.

lVitnesses EDITH B. LIBBEY, JENNIE P. THORNE.