US1731762A - Typewriting machine - Google Patents

Description

Oct. 15, 1929. H. w. CARROLL, JR 1,731,762

TYPEWRITING MACHINE Filed oct. 1, 192s 2 Sheets-Sheet 1 INVENTOR.

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Oct. l5, 1929. H. w. lcARRoLL, JR

TYPEWRITING MACHINE Filed Oct. l, 1926 2 Sheets-Sheet 2 INVENTOR. BY @Hiv-GMA A ORNEY Patented Oct. 1 929 UNITED sTATEs .PATENT OFFICE HEZEKIAHYW. CARROLL, JR., OF HOBOKEN, NEW JERSEY, ASSIGNOR TO AUTOGRAPHIC REGISTER COMPANY, OF HOBOKECN', NEW JERSEY, A CORPORATION NEW JERSEY TYPEWRITING MACHINE Application led October 1, 1926. Serial No. 138,833.

This invention relates to typewriting machines,.and more particularly to means for facilitating the use of continuous Worksheets in such machines.

When using continuous worksheets in front strike typewriters, the burden on the feed mechanism of unrolling the worksheets from the supply roll or rolls is usually too great and, therefore, unless some means is provided for paying-off the paper from the supply roll, there is great danger of the feeding movements of the platen being inaccurately transmited to the paper, so that there is a consequent loss of registration.

Heretofore, several proposals have been made for avoiding this difficulty, but these proposals necessitated the use of specially movable means for the purpose of paying-off the Worksheets from the supply rolls.

It is an object of the. present invention to provide a simple and'fool-proof device for the purpose above named, which device moves with existing parts of the typewriter, has very little inertia of its own, being extremely light, and yet satisfactorily functions.

More specifically stated, the present invention comprises a simple bail secured to the carbon-shifting carriage of the kind of typewriting machine disclosed in the Werney & Smith Patent No. 1,132,055. This bail is made to extend rearwardly to a point slightly beyond the carbon-shifting carriage frame when the carbon-shifting carriage is in its forward-most position, and the bail is caused f to engage a free stretch of the worksheets extending from the supply roll, located on or near the Hoor, to the carbon-shifting carriage frame of the. typewriter. Hence, when the carbon-shifting carriage is moved rearwardly to move the carbon paper to a fresh portion` of the worksheets, the bail engages the free stretch thereof and unrolls the Worksheets from the supply roll orrolls and, as explained herein, after one form length of worksheets is lifted to the carriage.

`Another feature of this invention is the provision of means for lifting a form length olf superposedvwebs upon the typewriter car-f riageby ya manual operationvand independent of the feed mechanism of the typewriter, and

also holding the forms on the typewriter carriage without placing any appreciable burden Fig. 8 is a side View of the parts shown in y Fig. 2.

- The typewriter shown by way of example in theI acompanying drawings, comprises a frame 10 on which there is mounted a platen carriage 11 carrying a platen 12 in an auxiliary frame 13 pivoted'at 14 so that it may be swung upwardly and rearwardly away from a trough constituted bythe paper table 15 and feed rollers 16, the latterpressing a pile of worksheets 17 against the platen for feeding movements therewith to line-space the worksheets as the platen is turned. v lVhen the platen is swung out of the said trough, away from the feed rollers 16, the worksheets 17 may be held substantially straight so that 28 riding on tracks 211 supported on a` carbon'- i shifting carriage frame 25 attached to the paper carriage 11 'for movement therewith.

The carbon paper 4carriage 21 is provided with a forwardly extending handle 26 by mea-ns of which'the typist may move the car; riage backwardly.'v

Vthe form'shown, is made up of longitudinally The carbon-shifting carriage frame 25, in r disposed tubular bars 27 and transverse bars 28, one of which is provided with a roller 29 riding on a guide rod 30 forming part of a rearward supporting frame 3l attached to the typewriter fralne 10. At its rear end, the frame 25 is provided with a rod 32 over which,

ordinarily, the pile of worksheets lies and x from which it drapes to the worksheets supdrawn forwardly over the frame 25. It will thus be seen that heretofore the feed mechanism of the typewriter had, not only to move the worksheets over the frame 25 and around the platen, but also to raise the free stretch 33, which was a considerable burden, espef cially when a large number of worksheets constituted the pile. This condition was further aggravated when the worksheets were taken from one or more supply rolls, and in such cases it was not unusual that the loadwas too great for the feed mechanism andthe worksheets'would consequently slip with regard to one another and the platen. y

The device of the present invention greatly facilitates the handling of continuous worksheets in a typewriter of the kind. described by' providing means whereby the feed mechanism is relieved of the load of raising the free stretch 33 of the worksheets from the supply to the typewriter. Moreover, in cases where the worksheets are provided in roll form, the present 1nvention makes it unnecessary for the feed mechanism of the typewriter to unroll the worksheets, but instead so provides the mechanism that the returning movement of the carbon-shifting carriage will cause the desired amount of worksheets to be unrolled. The returning movement of the carbon carriage is performed by hand, and hence there 1s sufficient powerl to overcome the inertia of the supply rolls with ease. In fact, the extra load on the carbon returning handle 26 is so slight as to be practically unnoticeable. The means for accomplishing these results in the form shown in the accompanying drawlng, comprises a bail 34 which is U-shape and has the legs of the U extending forwardly where they are fastened together by a transverse bar 35 preferablyformed integral with an arm 36 extending upwardly and then forwardly to a position where it under-lies the carrlage truck 22. At this end the bar 36 is provided with a pair of ears 37 on one side vadapted to overlie a cross-piece 38` in the carriage truck 22 and on the other side has a manually releasable clamp 39 for engaging the other side of the cross-piece 38, so that the bail with its bar 35 and arm 36 may be securely fastened to the carriage truck 22 Without making any mechanical changes on the car-l riage.

The bail is located under the carbon-shifting carriage frame 25 and extends rearwardly above the guide rod 30 on the frame 31 and it is low enough to clear the cross rod 28 on the frame 25. The length of the bail is such that when the carbon-shifting carriage 21 is in its forward-most position, the cross-tie 40' of the bail extends beyond the guide rod 32 on the carbon carriage frame 25. The amount that the cross-tie 40 of the bail extends be# yond the guide rod 32 depends upon conditions, it having been found satisfactory in some cases to have yit protrude but slightly. Of course, if desired, the bail could be so firmly and securely made and attached to the truck 22 as to be self-sustaining at its rearward end. But. in order that the device might be simple and light, it is preferable that the rear end of the bail be supported by guide rollers 4l which'may advantageouslyv be carried in brackets 42 adapted to encircle the transverse bar 28 at the rear of the carriage 25. The brackets 42 are conveniently secured to the rod by means of bolts 43 which are secured after the brackets are set in proper positions on the transverse bar 28.

The worksheets, as :stated` above, extend downwardly from the typewriter in a free stretch 33. This free stretch terminates in a supply compartment or box in cases where the worksheets are provided in pack form, or, as in the form illustrated, in a single roll 45 upon which all the worksheets are wound.

In order that the roll 45 may be unwound by the bail 34, the roll is mounted on -a suitable support 46 in such a position with respect of the typewriter that the paying-off side of the roll 45 will be substantially directly beneath the guide rod 32. When the roll 45 is in this position, and the carbonshifting carriage 21 is moved rearwardly,

the cross-tie 40'of the bail will engage the free stretch 33 and raisey a portion of it onto the bail, and at the same time will extend or bellfy7 the free stretch rearwardly and pull the paper leading from the roll, which, ofA course, will cause the roll to rotate and payoff the desired amount of paper. Hence, when the carbon-shifting carriage21 is moved rearwardly to the position-shown in Fig. 3, a form length of paper is elevated to the bail and the free stretch has been extended so as to be slack as soon as the carbon carriage moves forwardly. Ordinarily, in the use of the present invention, an amount in excess of that required is paid-0E the supply roll 45 due to the momentum of the roll, but even if this were notthe case, the free stretch 33 lo feed roller 16.

would always be sufciently slack to prevent undue skewing of the pile of worksheets as it passes over the guide rod 32. This is because the carriage 21 is not located in its rearward-most position after the platen 12 has been returned to its normal or writ.- ing position, for the carriage 21 advances when the carbon paper and worksheets are caused to wrapy around the platen in the trough constituted by the paper table 15 and It will thus be seen that the feed mechanism of the typewriter constituted by the platen 12 and feed roller 16 does not have to raise the worksheets up over the guide rod 32 as the typing is proceeded with, because of the fact that there is sutlicient.paper supported by the bail 34. In fact, as the carbon carriage moves forwardly as the paper is fed, the slackened condition of the free stretch 83 is increased, further avoiding any tendency of the worksheets to skew in their travel over the guide rod 32.

In order to relieverthe feed mechanism of the typewriter from the necessity of supporting the free stretch 33 suspended from the bail 34, the present invention provides means on the carriage for the purpose. This means, in the form shown, comprises a soft-rubber roller 48v pivotally mounted on, the cross-tie 40 of the bail 34, and means -for preventing retrograde movement of the soft-rubber roller, the latter comprising a ratchet vwheel 49 secured to the cross-tie 40 and a pawl 50 carried by the roller 48 and pressed into engagement with the ratchet 49 by spring 5l.

When the worksheets 17 are drawn upon the bail 34 during the carbon-shifting operation, the roller 48, freely rotates, because the pawl' 50 clicks over the ratchet 49. However, as the bail 34 moves forwardly while the papers are being advanced, any tendency of the worksheets to slide rearwardly off the bail is overcome by the soft-rubber roller 48, which is sufficiently tacky to preventy such retrograde lmovement of the paper, the roller 48 being prevented from rotating backwardly by the pawl 50 and the ratchet49.

It should be distinctly understood that any other form of back-check device may be used on the rear end of the bail, so long as it accomplishes the same purpose, and it should also be understood that the provision of the back-check device is not. essential to the successful operation of the bail itself, but the back-check device is merely ancillary, and further insures the correct feeding operation of the paper by relieving the feed mechanism of part of its burden.

Variations and modifications may be made within the scope of this invention' and portions of the improvements may be used without others.

Having described the invention, what is claimed as new and for which itfis desired to obtain Letters Patent, is:-

1. In combination, a typewriter platen; a carriage therefor; reciprocatory means on the carriage for shifting carbon sheets to new positions in a pile of continuous worksheets leading from a supply roll to said platen; and reciproeatory means engaging a free stretch of said pile of worksheets, 4secured t-o said reciprocatory carbon-shifting means and operated thereby as the carbon sheets are being moved to new positions in the pile of worksheets, for extending said free stretch of worksheets to pay-off the worksheets from the said supply roll and' thereby produce a predetermined slack in said fiee stretch.

2. In combination, a typewriter platen; a carriage therefor; recipiocatory means for shifting carbon sheets to new positions in a pile of continuous worksheets leading from a supply roll to said platen; and means engaging a free stretch of said pile of worksheets, secured directly to said reciprocatory means and moved parallel therewith as the carbon sheets are being moved to new positions in the pile of. worksheets, for extending said free stretch of worksheets. to payofi' the worksheets from the supply rol-l and thereby produce a predetermined slack in said free stretch.

3. In combination, a typewriter frame; a carriage therefor having a rearward extension; a reciprocating carriage mounted on the carriage for'the platen adapted to be connected to carbon sheets for shifting the carbon sheets to new positions in a pile of continuous worksheets leading from a supply roll to said platen; and a bailmounted on said reciprocating carriage and extending lrearwardly to a point adjacent the rear edge of the extension of the platen carriage, said bail being adapted to engage a free stretch of said pile of worksheets to extend said free stretch of worksheets to pay-off theworksheets from the supply roll and thereby produce a predetermined slack in said free stretch when the reciprocating carbon paper carriage is moved to bring the carbon sheet to new positions in a pile of continuous worksheets.

4. In combination, a platen carriage having a rearward extension; a carbon paper carriage movable along the extension; and a bail secured tothe carbon paper carriage and eX- tending rearwardly t0 the rear edge of the said extension, said bail being adapted to enz gage a free stretch of worksheets extending from a point remote from the carriage to the platen carriage and to raise the portion of the stretch so engaged to the level of the carriage when the carbon paper lcarriage is moved rearwardly on its extension.` l

5. In combination, a typewriter platen carriage; a carbon paper shifting carriage mounted on the platenl carriage; and means for producing slack in a pile of worksheets leading from a supply roll to said platen carriage, said means comprising a bail secured to the carbon paper carriage adapted to engage and lift a predetermined amount of said worksheets to the level of the carriage when the carbon paper carriage is moved to move the carbon papers to new positions with respect of the worksheets.

6. In combination, a carbon paper carriage comprising a sheet metal plate; a'sla'ck-producing bail mounted thereon; and means comprising jaw members engaging 'said plate for detachably connecting the slack-producing bail to the carbon paper carriage.

7 In combination, a carbon paper carriage; and a slack-producing bail secured to the carbon paper carriage and extending rearwardly parallel therewith to engage a free stretch of worksheets leading to the carbon paper carriage.

8. In combination, a typewriter platen earriage; a rearward extension thereof; a carbon paper carriage reciprocating on the said extension; a slack-producing bail secured to the carbon paper carriage and extending rearwardly to the rearedge of said extension; and guiding means on the extension for supporting the rear end of the slack-producing bail.

9. In combination, a typewriter platen carriage; a rearward extension thereof; a carbon paper carriage reciprocating on the said eX- tension; a'slack-producing bail secured to the carbon paper carriage and extending rearwardly to the rear edge of said extension; and anti-friction rollers mounted on said eXtension and adapted to support the rear end of the carbon shifting bail in operative position.

10. In' combination, a typewriter platen 'carriage; a rearward extension thereof; a carbon paper carriage reciprocating on the said extension; a slack-producing bail secured to the carbon paper carriage and extending -rearwardly to the rear edge of Said extension; and anti-friction rollers adjustably mounted on said rear' extension and adapted to support the rear end of said slackproducing bail in operative position.

l1. In combination, a typewriter platen carriage; arearward extension thereof; a carbon paper carriage slidably mounted on said rear extension; slack-producing means operated by said carbon paper carriage, said slackproducing-means comprising a U-shape rod, a tie-bar for securing the legs of the U-shape rod together on its forward end; and means on the tie-bar to secure the slack-producing means to the carbon paper carriage.

12. In combination, a typewriter platen carriage; a rearward extension thereof; a carbon paper carriage slidably mounted on said rear extension; and means operated by said carbon paper carriage during its movement rearwardly for raising a supply of worksheets onto the typewriter carriage.

13. In combination, a typewriter platen carriage; a rearward extension thereof; a Car-

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