US608971A - And hopedale - Google Patents

Description

N0. 608,97l. Patented Aug. 9, I898. W. E. ALLEN. WARP STOP MOTION FOR LOOMS.

(Application filed Nov. 28,, 1897..)

(No Model.)

. |||llll|||||||l|||lllllll lllllllllll v I I \VILLIAM E. ALLEN, OF SALEM, MASSACHUSETTS, ASSIGNOR TO THE DRAPER COMPANY, OF PORTLAND, MAINE, AND I-IOPEDALE, MASSACHUSETTS.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters I atent No. 608,971, dated August 9, 1898. Application filed November 23, 1897, Serial llo. 659,621. (No model.)

T0 at whom it may conioern:

Salem, county of Essex, State of Massachusetts, have invented an Improvement in Warp Stop-Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to that class of looms wherein the stoppingmechanism of the loom is operated through the intervention of stop-- motion-actuating detectors "upon failure or undue slackness of the warp-thread. IThe detectors are supported or hung upon the warp-threads and rise and fall with the latter in the formation of the shed, a guide being provided to prevent displacement of the detectors during such movement and also to act as a fixed fulcrum on; which an abnormallypositioned detector is moved by or through engagement with a reciprocating feeler, such positioning of the detector being due to'failure orundueslackness of its warp-thread.

The stopping mechanism for the loom is controlled as to its operation by the-feeler-induced movement of thedetector.

WVhen the loom is running properly, the deteeters are held by their warp-threads from engagement with the feeler.

In my present invention the detectors are shown as entirely independent of the shedforming mechanism, and inasmuch as it is impracticableto release the usual shipperlever by direct engagement therewith of a detector an intermediate device is provided, which, as hereinshown, is operated by the lay upon the abnormal positioning and subsequent fe'eler-induced, movement of a detector-:

Figure 1, in vertical longitudinal section, represents a sufficient portion of a 100m to be understood with one embodiment of my in vention applied thereto. Fig. 2 is a perspective detail of a portion of the mechanism shown in Fig. 1,and Fig. 3 is a partial sectional detail View of a modified form ofreciprocating means for the feeler.

The loom-frame A, thebreast-beam A lay A shipper-leverSg and the 'heddle-frames H H maybe and are of anyfusual or well-known construction. The lay is herein shown as pro at its rear side with a hunter a, adapted Be it known that I, .WILLIAM E. ALLEN, of

at times to engage a dog I), pivotally mounted at b on a link b jointed at b to a rockerarm b mounted to rock on a suitable fulcrum-stud b the hub of the rocker-arm having a suitable knock-off arm b to throw the shipper-lever out of its holding-notch when the link 12 is moved in the direction of arrow .10 by engagement of the dog I) and hunter a. The upperuend of the link I) is supported by the fulcrum-stud b, which is extended into a slot 0 of a guide-plate c, the hub of which is secured, as by a set-screw c rigid'lyto a stud 0 extended from the inner face of the loom side, and said stud has also looselymounted thereon a second hub I), provided with an upturned arm or finger 01, extended beneath the dog I), and with a second depending arm 61*, to which is secured a light rod or shaft d extended across the loom back of the harness mechanism, as herein shown, and having at its other end a second arm b (see Fig. 2,)

' journaled in the opposite loom side in any suitable manners The warp-stop-motion-actuating detectors, herein shown asaseriesof drop-wires, are preferably made as thin fiat metallic plates f, preferably hooked, as at f, to embrace the warp threads w and having longitudinal slots fitherein, through which slots is'extended across the loom a fixed bar f forming a guide to prevent displacement of the detectors in the direction of the length of the warps, the said guide being assisted in this function by an auxiliary bar f extended across the backs of the detectors and therod d which extends across their front. Obviously under normal conditions the detectors will rise and fall as the shed is' formed,

and there will be no change in the position of the dog I) from its full-line position, Fig. 1. Below the lower ends of the detectors a feeler is mounted, said feeler being shown in Fig. 1 as atriangular bar m, rotatably mounted on a shaft la held in suitable supports on the loom-frame and rotated in any suitable manner, as by a pinion ml in mesh with a rack m connected by a link m with the lay, and to be moved back. and forth therebyto'turn the feeler first in one direction and then in theother. :"T.

Referring to Fig. 1, it will be seen that when the loom is running properly the detec condition is shown in dotted lines, Fig. 1, and

such feeler-induced movement of a detector will act upon the transverse bar d pushing the same forward and thereby elevating the finger or arm d to lift the dog 1) into position to be engaged by the hunter as the lay moves back. The completion of the backward stroke of the lay will move the link 12 in the direction of the arrow 10 and'by the means described will release the shipper-lever from its notch in the usual holding-plate to thereby stop the loom.

I prefer to separate the detectors by means of thin washers 10 mounted on the guiderod f between each two detectors.

Instead of the rack-and-pin mechanism for actuating the feeler, as shown in Fig. 1, other suitable mechanism may be devised, and in Fig. 3 I have shown a fixed shaft 70 as provided with a collar 70, to which is rigidly secured one end of a spring 5., the other end being attached to an annular flange 7c on a disk 70 rotatably mounted on the shaft 70 said flange being connected by a suitable strap k with the lay-sword, the feeler-shaft being connected with said disk in any suitable manner. As the lay goes forward, the spring will he wound up and the rotation of the disk 76 will act to rotate the feeler-shaft in one direction, and as the lay swings back the unwinding of the spring will act to rotate 5 the disk,and consequently the feeler-shaft, in

the reverse direction.

- The mechanism herein shown is very simple, requiring little adjustment, and is rapid and effective in its operation.

The detector is subjected to very little strain when abnormally positioned, because the work to he performed at such time by the detector is merely that of lifting the doginto operative position to be engaged by the hunter.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a warp stop-motion for looms, longitudinally-slotted stop-motion-actuating detectors positioned abnormally by failure or undue slackness of the warp-threads, said detectors being applied to the latter, a fixed guide extended through the slots of and relatively to which the detectors are movable, a stationarybar extended back of the rear edges of the detectors, a feeler to engage and move an abnormally positioned detector on the guide, and stopping means for theloom, including a swinging bar extended across the front edges of the, detectors, operated by feeler-induced movement of a detector, the fixed and swinging bars assisting the guide to prevent displacement of the detectors when the loom is running properly.

2. In a warp stop-motion for looms, stopmotion-actuating detectors positioned abnormally by failure or undue slackness of the warp-threads, said detectors being suspended by the latter and having each a longitudinal slot, a fixed guide-bar extended through the slots of the detectors, and acting to limit the detecting movement of a detector, a feeler to engage and swing an abnormallypositioned detector on said guide as a fulcrum, and stopping means for the loom, including a dog, and a controlling device therefor operated by the detector when swung by the feeler, to move the dog into operative position.

3. In a warp stop-motion for looms, stopmotion-actuating detectors vertically movable by the warp-threads when the loom is running properly, a guide for said detectors, a feeler to engage and move an abnormallypositioned detector, stopping mechanism for the loom, including a normally inoperative dog, a hunter, and a controlling device for the dog, operated by the feeler-induced movement of a detector.

4. In a warp stop-motion for looms, a series of stop-motion-actuating detectors normally supported by the warp-threads, a shipper, controlling means therefor, including a transverse bar to be engaged and swung by feelerinduced movement of an abnormally-positioned detector, a finger movable with said bar, and a dog controlled as to its position by said finger, and a feeler to engage and effect movement of a detector in abnormal position due to breakage or undue slackening of its warp-thread.

5. In a warp stop-motion for looms, a series of stop-motion-actuating detectors normally supported by the warp-threads, and a feeler adapted to engage and move an abnormallypositioned detector, combined with the lay, a hunter movable therewith, a shipper, controlling means therefor, including a dog, and a finger operated by the feeler-induced movement of a detector, to move the dog into position to be engaged by the hunter upon breakage on undue slackening of a warp-thread.

6. In a loom, the lay, a hunter movable therewith, a shipper, controlling means therefor, including a normally inoperative dog a finger to position the dog, and a transverse actuating-rod connected with the finger, combined with a series of stop-motion-actuating detectors moved into abnormal position by breakage or slackening of a warp-thread and arranged adjacent said actuating-rod, and a feeler to engage an abnormally-positioned detector and move it, to effect the operation of v the actuating-rod.

:o detectors and operated by the feeler-induced movement of a detector, the guide being located between the actuatingwod and the feeler.

In testimony whereof I have signed my name to this specification in the presence of I 5 two subscribing Witnesses. 7

WILLIAM E. ALLEN. Witnesses:

WILLIAM H. GoVE, VINNIE B. HARTSHORN.

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