US697253A - Warp stop-motion for looms. - Google Patents

Description

No. 697,253. Patented Apr. 8, I902.

H. J. JARRY,

WARP STOP MOTION FOR LOUMS.

(Application filed Dec. 18, 1901.) (No ModeL) m: ucnm s PEYERS cu wno'ro-umq, WASnINGTON, o. c

" TED STATES PATENT OFFICE.

HENRY J. JARRY, OF W'ORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMP- TON & KNOYVLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

WARP STOP-MOTION FOR LOOIVIS;

srncrrrcarron forming part of Letters Patent No. 697,253, dated April 8, 1902.

Application filed December 18, 1901. Serial No. 86,346- (No model.) 7

To all whom, it may concern.-

Be it known that I, HENRY J. JARRY, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Warp Stop-Motions for Looms, of which the following is a specification.

My invention relates to warp stop-motions,

lo and more particularly to that class of warp stop-motions in which the drop bars 01' wires are arranged in two sets and are strung on the warp-threads between the back roll and the harnesses, the warp-threads being divided into two sets or halves by the two lease-rods extending transversely through them, as shown in United States Letters Patent No. 637,234:.

In the class of warp stop-motions above referred to the warp-threads extend in two planes, being divided by the two parallel lease rods, and the two planes intersect each other between the two lease-rods, and the drop bars or wires are suspended upon the threads of each lower plane at each side of their intersection or crossing. The warpthreads are only supported on one side of and some distance from the drop bars or wires on the lease-rods.

It has been found in practice that whenever slackness occurs in any of the warpthreads the drop bar or wire suspended upon such thread is liable to sag sufficientlyto contact with the terminal or circuit-bar in an electric warp stop-motion and stop the loom while the warp-thread is still unbroken, and in the case of a mechanical warp stop-motion the drop bar or wire will sag into the path of the vibrating feeler and stop the 40 feeler, and consequently through coacting mechanism stop the loom.

' One object of my invention is to prevent the sagging or lowering of the drop bars or wires above referred to whenever a warpthread becomes slack and to hold them in their normal elevated position until a warpthread is broken.

Another object of my invention is to have the two parallel lease-rods so supported as to have a free up-and-down or vertical motion,

but no lateral or horizontal motion, so that they may move up and down with the warpthreads, but will always maintain the same position relative to the drop bars or wires in their normal position.

In carrying out my invention I place a rod, bar, or rest directly under all of the warpthreads, at their point of intersection, and between the two. sets of drop bars or wires, on which all the warp-threads will rest and be supported. I also place a rod, bar, or rest under each lower plane of warp-threads, just outside each set of drop bars or wires, and

between the same and the lease-rods, on-

which the lower planes of the warp-threads will rest and be supported. The three rods, bars, or rests extend in substantially the same horizontal plane as the two lease-rods and form rests or supports for the warpthreads on each side of each set of drop bars or wires and close to said drop bars or wires. The ends of the lease-rods preferably extend loosely in vertically-extending open-end slots or recesses in supporting arms or brackets ex tending out from the end plates of the frame, carrying the warp-rests above described and the guide-bars for the drop bars or wires.

I have only shown in the drawings a do tached part of a warp stop-motion embodying my improvements sufficient to enable those skilled in the art to which my invention belongs to make and use the same.

Referring to the drawings, Figure 1 is a plan View of the supporting-frame, the two lease-rods, the warp-supporting rods or rests, and the guide-rods for the drop bars or wires and the drop bars or wires embodying my improvements; and Fig. 2 is a cross-section on line 2 2, Fig. 1, looking in the direction of arrow a, same figure.

In the accompanying drawings, 1 represents the end plates of the frames, which in this in stance are connected by the parallel transverse bars 2 2, secured by screws 3 to the lugs 1, extending from the inner side of the end plates 1. Extending out from each edge of the end plates 1 are in this instance the arms or brackets 4, having vertically-extending slots or recesses 4t upon their inner sides, which are open at the top and in this instance trical or mechanical warp stop-motions.

closed at the bottom, as shown in Fig. 2. Extending loosely in the vertically-extending slots or recesses 4' in the brackets 4 are the ends of the two lease- rods 5 and 6. The leaserods 5 and 6 extend transversely through the warp-threads 7 and divide them into two sets or halves which extend in two planes and which cross or intersect each other at a point intermediate the two lease- rods 5 and 6 in the ordinary way.

Extending transversely between the two end plates 1 are the two guide-bars 8 and 9 for the two sets of drop bars or wires 10 and 11, which in this instance are made with long open- end slots 10 and 11 therein, through which the guide-bars 8 and 9 extend, as shown in Fig. 2. The drop bars or wires 10 and 11 are suspended upon the lower planes of the warp-threads 7, one set upon one-half of the warp-threads and the otherset upon the other half of the warp-threads and each set between the intersection of the warp-threads and a lease-rod in the ordinary way.

Extending transversely between the end plates 1 and secured thereto are the three parallel rods or rests 12, 13, and 14, extending substantially in the same horizontal plane as the lease- rods 5 and 6. One of the rests 13 extends directly under all of the warp-threads 7 at their point of intersection and between the two sets of drop bars or wires, and all the warp-threads are supported on said rest 13. Each of the other two rests 12 and 14 extends under the lower planes of the warp-threads 7, just outside of the drop bars or wireslO and 11 and inside of the lease- rods 5 and 6, and support the lower planes of the warpthreads, as shown in Fig. 2.

It will be seen that all the warp-threads on which each set of drop bars or wires are suspended are supported on each side of the drop bars or wires and close thereto and independent of the two lease-rods, so that the drop bars or wires are maintained in their normal elevated positions even if there is a sag in any of the warp-threads outside of either lease-rod.

The vertical movement of the lease-rods allows for any extra tension on either set of warp-threads in the operation of the loom.

I have not shown in the drawings or described herein the terminals or circuit-bars extending below the drop bars or wires to be engaged by them in their lowered position to complete the circuit in the ordinary way, nor have I shown a vibrating feeler to engage the drop bars or wires in their lowered position in a mechanical warp stop-motion in the ordinary way, as the same form no part of my present invention.

It will be understood that the details of construction of my improvements may be varied, if desired, and that they may be used in elec- The end plates supporting the warp-supporting rods or rests may be stationary relative to the two sets of drop bars or wires, and a lease-rod outside of each set, to divide the warp-threads into two planes, a warp-supporting rod or rest between the two sets of drop bars or wires, to support all the warp-threads, and a warp-supporting rod or rest on the outside of each set of drop bars or wires, and inside of the leaserods, to support the lower planes of the warpthreads, so that the warp-threads will have a support at each side of the drop bars or wires, substantially as shown and described.

2. In a warp stop-motion for looms having two sets of drop bars or wires, and a lease-rod outside of each set, to divide the warp-threads into two planes, a warp-supporting rod or rest between the two sets of drop bars or wires to support all the warp-threads at their point of intersection, and a warp-supporting rod or rest on the outside of each set of drop bars or wires, and inside of the lease-rods to support the lower planes of the warp-threads, substanstantially as shown and described.

3. In a warp stop-motion for looms having two sets of drop bars or wires, and a lease-rod outside of each set, to divide the warp-threads into two planes, the combination with the two end plates of the frame, of a warp-supporting rod or rest between the two sets of drop bars or wires to support all the warp-threads, and a warp-supporting rod or rest on the outside of each set of drop bars or wires, and inside of the lease-rods, to support the lower planes of the warp-threads, substantially as shown and described.

4. In the warp stop-motion of a loom having two sets of drop bars or wires, and a leaserod outside each set, to divide the warpthreads into two planes, the combination with brackets or arms having a vertical opening or recess therein, of lease-rods extending loosely at their ends in said opening or recess, to have a vertical motion therein, substantially as shown and described.

5. In the warp stop-motion of a loom having two sets of drop bars or wires, and a leaserod outside each set, to divide the warpthreads into two planes, and warp-supporting rods or rests between the lease-rods to support the warp-threads on each side of the drop bars or wires, the combination with brackets or arms having a vertical opening or recess therein, of lease rods extending loosely at their ends in said opening or recess, to have a vertical motion therein, substantially as shown and described.

HENRY J, J ARRY.

Witnesses:

JOHN G. DEWEY, M. HAAS.

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