US176949A - Improvement in looms for weaving corsets - Google Patents

Description

C. GAHREN & G. ZORN. LOOMS FOR WEAVING consms.

Patented May 2,1876.

U I ED STATES ATENT CHARLES GAHREN AND GUSTAVE ZORN, 'OF NEW YORK, N. Y., ASS IGNORS TO MORITZ (JOHN, OF SAME PLACE.

lMPRQVEMENT INLQCMS FOR WE'AVYING- CORSETS;

Specification forming part of Letters Patent No. 176,949, dated May 2, 1876; application filed I I December 53, 1 875.

, To all whom "it may concernt and State of New York,have jointlyinvented certain new and useful Improvements in Looms for Weaving Gor'sets and other articles or goods of irregular form; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, which forms part of this specification.

, This invention is more particularly designed to be applied to power-looms for weaving in a continuous or uninterrupted manner corsets and other articles or goods having greater fullness in some parts than in others, and to do which the warp is so lifted or operated that the successive picks of filling are inserted through varying portions of it, according to the form ot'ffullness' desired.v This produces an unequal length of the web in different parts.

of its width, which involves an irregularity of action in the take-up, and to meet which various means, most of which have been more or less complicated, have been proposed, including separatetak'e-up' rolls having a positive motion, also take-up devices controlled by the jacquard mechanism.

One part of our invention relates to the takeup of a loom. for weaving irregular work, as hereinbeforespecified and consists in a combination of a single positively-operated takeup roll extending the width of the web, and a series of free and independently operating yielding pressure-rolls held by springsin contact with the web, and made to press the latter against the take-up roll, said independent yielding pressure-rolls. being preferably arranged over the take-up roll, and 'servin g, by their yielding action, to prevent any take-up action excepting at those parts of the Warp where the filling is being inserted, and where slackness is consequently produced between the take-up and the lastshot of the filling by the blow of the reed.

Another part of our invention relates'to the means used between the reedand the take-up for preventing any portion of the web from moving back after each cessation of the takeup roll. This part of the invention consists in a retaining device which is composed of a stationary smooth bar and a roll between the take-np'and the reed, such roll being interposed between said bar and the take-up. and

the stationary bar being arranged between said roll'and the reed; also, such roll being of such a size and so disposed that the cloth, in

passing from the smooth bar under or around said roll, is made to take a'short curve between the bar and the take-up, Aretaining device thus constructed in no way interferes with the positive action ot'the take-up, yet effectually prevents all back action, and has the advantage of much greatersimplicity than those devices for the same purpose in which open and closing clamps are used, and it is free from all injury of the cloth, which certain other retaining devices usin g needles are not.

Figure 1 represents a vertical section, in direction of the warp, of a loom in part having our invention applied; Fig. 2,a vertical section, upon a larger scale, in a plane at right angles to Fig. 1, in illustration of the takeup and retaining devices; and Fig. 3 is a transverse section, also upon a difl'erent scale, of I said devices. 7

A is the frameof the loom B, the lay, and G the lay-swords, pivoted at b below. Sis the reed, and D a crank-shaft for vibrating the lay. E is. the harness, operated by the jacquard or other suitable means; and G, the warp, which may be supplied over a beam or roller, 0, at the back of the loom, subject to the action of weights, to preserve a uniform tension and allow the warp to be drawn forward in sufficient quantity when the taking up of the Web, as hereinbefore referred to, takes place. H is a single take-up roll, which may be fluted, and which extends across the loom the full width of the web. This take-up roll is positively driven or operated in a uniform intermittent manner by the looinas, for instance, by an adjustable driver, at, on one end of the swords of the lay, said driver striking ateach I beat of the lay a lever, e, which carries a pawl, f, that works ina ratchet, g, on the end of the takeup roll, to operate it as required. Said take-up roll H, however, has no action of itself upon the 'web W, but, as regards taking up the latter, is dependent upon the joint ac- FFIC..

tion with it of 'a series of free and independent ly-operating yielding pressure-rolls, I 1, arranged in line. with one another over the take up roll H. These independently-operat1ngrolls I I may be of various lengths, and of any desired-number, according to bhB.WOIk'll70 be; done. They are held in contact with the web by rubber or other springs h, which are adjustable by set-screws i, and do not operate in concert with the take-up roll H .onith'e web, but prevent any take-up action excepting at those parts of the warp where the filling is being inserted, and where slackness is .conse quently produced by the blow of the reed be; tween the take-up and the last shot of the'fill-f ing. Thus the take-up of the web W is de-- pendent upon the opening of the shed .at dif ferent points in its width, as-controlledbyithe jacquard-machine, although thetakeup is not; worked by the jacquardyhut iscontrolled by the insertion of the filling, as above described,-

and only such of the indepeudntly-operatingj rolls I I act in concert with the take-up roll,

H to efiect the take-up .as'face the last shot of the filling, and where theslacknessproduced% between the take-up andsuch shot .of'the fil1-; ing by the beating up of thelay admitot' suchf one or more of the yielding rolls .1 acting in concert with the .take-uprollto take up "theweb at that part of the warp, the other of said pressure or yieldingrollspreventing-any take up at other parts of the warp.

To preventbackslip .or .action lot the web after each action of the take-up, the web is made to pass over astationary smooth *bar, J and under a rubber-faced .or other roll,K, andj fromthence to the take-up rollH, said'barfJ. and i roll K being interposed'between the take-up and the reed throughout the widthof the web, and said roll being between the bar vand rthe take-up. This constitutes theretaining device, and it is important in the construction of it that the roll K be of sucha size andbe so dis-i posed that the web or ecloth in passing .from the smooth bar to and under said roll, ismad'e .of the latter.

to tak'ezashortrcurve between the-bar-and the take-cup. The roll 'K may .or maynot hold the cloth .in contact with the take-up roll but if arranged todo this, care'should be taken that it does-not press the cloth too hard against thetake-up'roll to interfere with the action The said roll K may be furnished with'a'ratchet-wheel having a pawl applied to it, to prevent it from making any backward motion.

Any suitable shuttle may be used.

Thecsharp bend given to the web by the bar J .and roll K, coupled with the .friction of the web .on the'bar, effectually prevents any back throughoutithe *Width of the web, of a series of'ii11(lepeudent';automatically operatin g yieldinggpressureqrolls, I,=held by springs in constant contact with ithe Cloth, and, "by their pressure on the latter'againstt'thetakemp roll,

operating to prevent any take=up of the cloth .byrthe 'roll fiyexcepting-where slackness is producedbythebeatingl p ofthe lay between thetake-"up andthe last shot of the filling,

substantially as specified.

2. The retaining device, to prevent. back action of the web after eachtake-up of the'latter, consisting 'ofacombination, 'withthe take- -.up'roll H, 'of :astationary smooth bar, J, and

roll Kbetween the take-'up'and'thc reed, the roll K beinginterposed between said bar and take-up, and thestationary bar between said rollsand the read, and the roll K being con- 1 structed andarranged,"with-relationto' the bar \J and take=u 'p,'.as described, w'herebythe cloth is curvedor'bent between said bar and the

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