US1766894A - Weight for weft-replenishing-loom thread holders - Google Patents

Description

June 24, 1930'. H. v. FOSTER 1,766,894

' WEIGHT FOR WEFT REPLENISHING LOOM THREAD HOLDERS Filed Dec. 20, 1928 Patented June 24, 193%) UNITED STATS PTNT FICE HERBERT V. FOSTER, OF PROVIDENCE, B I-IODE ISLAND, ASSIGNOR TO OBOMPTOH & KNOVVLE$ LOOM "WORKS, OF WORCESTER, MASSAGHUSETTS A CORPORATION OF MASSACHUSETTS WEIGHT FOR WEFT-REPLENISHING-LOOIW THREAD HOLDER-S Application filed. December 20, 1928. Serial No. 327,438.

This invention relates to an improved form of weight to be used for the weft threads of weft replenishing looms and it is the general object of the invention to provide a weight easily applied to the weft threads.

In weft replenishing looms particularly of the multicolor type there are a number of weft threads extending fromtlie reserve bob-- bins which should be kept taut to insure best operation for the loom. thread holders make use of weights which are attached to the weft ends and it is an important object of my present invention to provide a weighted element for a magazine, the element being readily attachable to a weft end by a single operation on the part of the user. It is highly desirable that the weaver be able to apply the weights quickly and also securely, the weight preferably being manipulated by one hand and the thread with the other and it is a further object of my invention to provide a weight which can be thus operated.

With these and other objects. in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claim.

In the accompanying drawings wherein a convenient embodiment of my invention is v 7 set forth,

Fig. 1 is an end elevation of a weft r'eplen ishing mechanism showing -weft ends pro vided with my improved weight,

Fig. 2 is a vertical section through a portion of the thread holder to illustrate the manner in which the thread holder may be held in non-clamping position to permit my improved weights to tension the weft threads,

Fig. 3 is an enlarged vertical section through one of my weights, and a Fig. 4 is a diagrammatic view illustrating the manner in which a weft thread may be applied to the weight.

As shown in Fig. 1 there is a magazine M from which extend a plurality of weft threads V from the reserve bobbins not shown. These threads may extend between the coils of a spring 10substantially of the form shown in co-pending application Ser.

Certain forms of No. 326,057 'filed'by Tinsley. Said spring may be anchored with respect to the magazine by means of a stationary collar 11 mount ed on a fixed rod 12. A manually operated spring controller 13 is slidably mounted on the rod 12 and is operatively connected to the left hand endof the spring asviewed in Fig. 1. A latch 14 may be used to engage a portion of the controller 13 to hold the same in spring expanding posit-ion as shown :in Fig. 2. I w

The matter thus far described forms no part of my present invention-and is set forth to showthe conditions under which my improved form of weight may be used. In the operation of the magazine the bobbins descend, thus causing slackness on the part of the weft threads NV. The controllerlS will be periodically moved to the left to separate the coils of the spring 10, thus freeing the weft ends from the clamping action of the coils. lVhen this happens it is desirable to have some agency operative to tension the weft threads to take up their-slack and it is a the lower end thereof. A tube or sleeve 22.

surrounds the rod and is freely slidable on the latter, being urged upwardly by a spring 23 interposed between the head 21 and the lower end of the sleeve 22. Upward movement of the sleeve with respect to the rod is limited by means of a stop 2% which may be securedto the rod in any approved manher as by means of a pm 25. Any other form of stop may be employed,but it is desirable that the stop present a lower surface 26 which will cooperate with upper surface 27 of the. sleeve 22 to pinch a weft end;

Themanner of using -my invention is set forth in Fig. 4: where it Wlll be seen that the rounded head 21 maybe located in the palm of one hand while the fingers move the sleeve down against the action of spring 23, thus separating the surfaces 26 and 27. The weft end WV may then be passed under the stop 24 and the sleeve released, whereupon the spring 23 will move the surface 27 against the weft to clamp the latter against the surface 26. The weft end may then be passed down over the spring to be located between adjacent coils when the latter are spaced. From the foregoing it will be seen that I have provided a very simple form of weight which can be readily attached to a weft end, said weft comprising a pair of thread clamping surfaces which are forced together by a resilient device, the whole being so construct ed that it can be operated by one hand leaving the other hand free for the manipulation of the weft thread. It will also be seen that the lower portion of the head 21 is rounded so that should the heads be of different elevations in the magazine the higher weights will be. able to move downwardly without being held up by adjacent weights.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to. be limited to the details herein disclosed, but what I claim is:

A weighted thread tensioning element for a weft replenishing loom having weft ends, said element comprising a rod, a stop located at the upper endthereof, a sleeve slidably mounted on the rod, a head formed on the lower end of the rod, and a compression spring interposed between the head on the rod and the lower end of the sleeve and acting to move the sleeve against the stop to clamp a weft end, said sleeve being yieldable to move away from the stop to release a weft end, the lower portion of said head being rounded to facilitate movement of the same with respect to adjoining weighted elements. In testimony whereof I have hereunto af fixed my signature.

HERBERT V. FOSTER.

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