US1449776A - Loom-temple thread cutter - Google Patents

Description

J NORThROP LOOM TEMPLE THREAD CUTTER.

FILED MAR.17, 1921.

Mar. 27, 1923.

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Patented Mar. 27, 1923.

UNITED STATES JONAS NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO HOPEDALE MANU- FACTURING COMPANY, OF MILFORD, M

CHUSETTS.

ASSACHUSETTS, A CORPORATION OF MASSA- LOOM-TEMPLE THREAD CUTTER.

Application filed March 17, 1921. Serial No. 453,029.

To all whom it may concern:

Be it known that I, JONAS NORTHROP, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Loom- Temple Thread Cutters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invent-ion relates to an improvement in loom temples. In automatic filling sup ly looms, the filling extending from the ellto the spent filling and from the filling supply mechanism to the fell should be severed in order to prevent it from being accidentally woven into the cloth. The object of this invention is to produce a loom temple having provision for severing these threads with certainty and by means not liable to derangement. To the above end the present invention consists in the loom temple hereinafter described and particularly defined in the claims.

In the accompanying drawings F 1g. 1 1s a side elevation of a temple embodying the invention; Fig. 2 is a plan of the same, Fig. 3 is a side elevation showing the parts in a different position from that shown in 'Fig. 1, and Fig. 4 is a perspective detail view of the weft hooks and weft support-' ing fingers.

The temple rod 1 having a goose neck 2 supports at its end the temple pod covered with the temple cap 4. A temple heel 5 is secured to the temple rod in the usual manner. The temple rod 1 is supported in a rod guide 6, in turn secured to the temple support 7 by means of bolts in the usual manner, The temple as thus far described is substantially the same as that shown 1n Letters Patent No. 1,067,836, in which the details of construction are more fully described. The temple rod is slotted in adirection, at right angles to the axis of the temple roll to receive the weft severin slide 21, provided with the slide heel 22 a apt/ed to be engaged by the lay which is diagrammatically illustrated in broken lines. The weft severing slide 21 is pressed rearward to its normal position by the spring 23 supported on the stud 24 which is carried on the goose neck 2 of the temple rod 1. The weft severingslide is provided at its extreme rear end with a plurality of integral rigidly supported weft hooks 25. These hooks 25 have vertical front faces and curved rear faces, as shown, so that the weft can slide under the hook easily but cannot easily be disengaged therefrom. Co-

operating with the Weft severing hooks of the slide is a weft support 26 adapted to be secured by means of a screw to the temple rod. This weft support is provided with a plurality of depending fingers 31 against which the weft'is pressed by the hooks of the weft severing slide when the weft is to be severed. The weft supporting fingers are approximately the thickness of the spaces between the hooks 25 so that when the weft severing slide is pushed forward so to cause the hooks to press the weft against the weft supporting fingers 31 the weft is cut by the fingers or by being bent around them is broken. In case the fingers are somewhat thinner than the spaces between the hooks the weft will be bent alternately around the fingers of the weft support and the hooks of the weft severing slide thereby bending the weft in a sinuous line so as to cause a; longitudinal strain to be exerted upon the thread greater than its strength to resist, so that the thread is thereby severed by the device. So far as the present invention is concerned it is'immaterial whether the fingers so nicely fit the spaces between the hooks as to cut and sever the thread, or hooks which are separated far enough apart not to cut the thread and the thread is broken by being strained around the fingers and hooks. In either case particles of thread, or fragments of staple, are drawn between weftsupporting fingers of the weft support and accumulate there. One feature of the present invention consists in the arrangement shown in Fig. 1, and on an enlarged scale in Fig. 4, by which the surface of the space at the roots of the fingers 31 which'is inclined from the top forwardly so that as particles of threads or fragments of staples are drawn by hooks into the spaces between the fingers the accumulation of the latter and the successive pressures of whether the fingers and 4 the hook thereon operate to force the ma- Another feature of the invention resides in the construction of the weft severing slide 21 by virtue of which when the slide heel is struck by the lay the slide rocks about an upwardl extended pivot formed as a projectionupwardly from the angle of the heel and the body of the weft severing slide. The result of this construction is that as the lay moves forwardly, pressing upon the heel 22, it rocks the weft severing slide 21 about the plYOll 30 so that the weft hooks 25 swing downwardly and forwardly toward the thread and toward the ends of the weft severing fingers. This construction is clearly to be distinguished from that illustrated in the patent to Draper and Stimpson, No. 585,465, dated June 29, 1897, wherein the weft severing slide is shown as pivotally mounted in such a way as to rock upon the shoe 6 so that the weft severing fingers move always rearwardly rather than forwardly as in the present case. In the present construction the tendency of the hooks is to move forwardly so as to engage and draw the threads toward the fingers, thereby decreasing the size of the space within which the thread is held in contra-distinction from allowing it to remain the same or to increase as in the construction of said patent.

Furthermore, in the present construction the vertical height of the weft supporting fingers is made greater than in prior constructions in order that the thread may be cut over a wider area of surface, thereby reducing the wear on any given part of the fingers and increasing the certainty of the operation of the device, by increasing the size of the locus of cutting.

Having thus described the invention what is claimed is:

1. A weft severing device consisting of a weft severing slide provided with a heel and a weft support, said slide and heel having cooperating fingers adapted to intermesh for severing the weft, the bottoms of the spaces between the fingers of the support being inclined forwardly and downwardly,

and said slide being constructed and supported upon engagement of the lay with its heel to move its cutting portion downwardly and forwardly so, as thereby to engage the thread to be severed by a motion in a direction toward the support and downwardly at the same time, so that accumulating thread and staple fragments between the fingers of the support are forced downwardly and outwardly therefrom.

2. A weft severing device consisting of a weft severing slide provided with a multiple finger weft engaging hookat its rear end, and a weft support provided? with a multiple finger support having the bottoms of the spaces between the fingers inclined forwardl and downwardly, said slide being provlded with a pivot portion arranged above the weft engaging hooks of the slide so that when the heel is struck by the lay, the hooks swing downwardly about the pivot and forwardly to engage and sever the thread against the fingers of the support, such motion acting to force downwardly and outwardly from between the fingers of the support accumulating thread and staple fragments.

3. A weft severing device consisting of a weft severing slide provided with a heel and a weft support, the bottom of the spaces between the fingers of the support being inclined forwardly and downwardly so that accumulating thread and staple fragments are forced downwardly and outwardly therefrom.

4. A weft severing device consisting of a weft severing slide and a weft support, the weft severing slide being provided with long downwardly extending faced hooks and the weft support, being provided with long vertically positioned thread cutting fingers, the bottoms of the spaces between the fingers of the support being inclined forwardly and downwardly so that accumulating thread and staple fragments are forced downwardly and outwardly therefrom.

JONAS NORTHROP.

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