US703666A - Warp stop-motion for looms. - Google Patents

Description

H. A. OWEN. WARP STOP mo'non ron'pooms.

Patented July I, I902.

(Apulication filed Mar. 11, 1901.)

(No Model.)

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No. 703,666. Patented July I, I902.

- H. A. OWEN.

WARP STOP MOTION FOR LOOMS.

(Application filed Mar. 11, 1901.

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HENRY- A. OWEN, OF WHITINSVILLE, MASSACHUSETTS.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 703,666, dated July 1, 1902.

Application filed March 11, 1901. Serial No. 50,666.. (No model.)

T0 at whom it may concern.-

Be it known that I, HENRY A. OWEN, a citizen of the United States, residing at Whitins- Ville, in the county of Worcester and State of Massachusetts, have invented anew and useful Improvement in Warp Stop-Motions for Looms, of which the following is" a specification.

This invention has reference to the class of warp stop -motions 'in which the detectorplates are supported on the warp and connect with a mechanism when a warp-thread breaks, whereby the loom is Stopped.

The invention consists in the peculiar and novel construction and the combination of the detector-plates with the mechanism'whereby the detector-plates when released connect a rocking mechanism with the loom stop mechanism, as will be more fully set forth hereinafter.

Figure 1 is an end view of a portion of a loom, showing the parts of a loom with which the warp stop-motion cooperates. Fig. 2 is a side view, on an enlarged scale, showing the normal position of the detector-plates, the

rocking mechanism and the supporting-tube being Shown in section. Fig. 3 is a side view,

partly in section, showing the detector-plate" in the operative position. Fig. 4 is a top view, partlyin section, of one end of the rocking mechanism, showing the actuating-lever secured to the rocking shaft and'the'atuated lever secured to the tube. Fig. 5 is a sectional view of the rocking tube and shaft, showing the detector-plate supported above the warpthread, a modified form used when the rocking mechanism is placed above the warp.

- In the drawings, Aindicates the end frame of the loom, B the warp-beam, C the breastbeam, D the lay, E the warp, and Fthe camshaft, of apower -loom.

In Fig. 1 the above-referred-to..parts are shown in their relative positionsas commonly used. l

In applying my improved warp stop-motion I secure the bracket or to a-fiXed'pa-rt of each of the end frames A; -In Fig. l'the bracket or is shown secured to the bracket a, whichis secured to the end frame. The tube 1) has in its upper side the longitudinal slot 1) and is supported at its ends in bearings formed in v on the warp threads.

these bearings. To one end of the tube 1) the lever b is secured, as shown in Fig. 4. The connecting rod b connects the free end of the lever Ir -with the rod 1), whichnormally rests on the pin b projecting from the end frame A. The rod 12 is provided with the shoulder b, which when the rod is'raised, as' is indicated in broken lines in Fig. 1, lies in the path of the bracket d on the lay; On the front end of the rod rests the stud If. It is preferably provided with a forked end and the shoulder 6 which engages with the knockoff lever c.

Within the tube b is supported the rockshaft f. The part of this rock-shaft f be- .tween the cylindrical ends is of crescentshaped cross-section, the convex portion of offtherock-sha ft'f the lever f is secured, as

shownin Fig. 4. The connecting-rod f 0011- nectsthe leverf' to 'the crank f on the cam- A series ofdetector-plates e are supported Each detector-plate has an eye or opening c, through which a warp-thread is passed, and an elongated opening-'e through which the tube b extends.

The upper part of the'opening 6 preferably contracts in segmentalcurves, abutting against the stop 6, whichextends downward into the opening e. The detector-plates e are suspended by warp-threads. When a warp-thread breaks, the detector-plate will drop by its own weight, and the opening e is of such shape and dimensions that in dropping the detector-plate e will be guided so that the stop a will enter the slot bin the tube 6, and when the crescent'portion' of the tube rocks to clear the slot. the stop e will pass down into the tube and the pathof the crescent portion of the shaft. The detector plates 6, supportedon thewarp threads, are held against the forward movement-of the warp, preferably, by the tube g, which is supported on the brackets a a on the opposite end frames.

When it is desired to place the warp stopmotion above the warp, the brackets a a are made longer, so as to support the tube 1) above the warp, and the detector-plates e, having the warp-eye c below the opening 6 (shown in Fig. 5,) are supported by the warp, as is shown in that figure.

When the stop-motion is connected with the loom, the operative connections are outside the end frames of the loom in plain sight and accessible for adjustment or repairs. In the normal condition the crank f imparts, through the lever j, a rocking motion to the shaft f. The upper edge of the crescent section of the shaft passes under the slot 1; forward and backward. When now a warpthread breaks, the detector-plate e, engaging with and supported on the warp-thread, drops and the stop e enters the slot in the tube 7) and rides on the crescent section of the shaft until the upper edge clears the slot, as shown in Figs. 2 and 5, when the stop descends and interlocks the shaft f with the tube 1). At this point the crank f and all the operative parts are in the position shown in solid lines in Fig. 1. As the crank f turns into the position shown in broken lines the tube b turns, with the shaftf, into the position shown in Fig. 3, the lever 12 lifts the rod b into the position shown in broken lines, the lay strikes near the end of its reciprocation against the shoulder b", and the shoulder 11 operates the knock-off lever to stop the loom.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a warp stop-motion having detectorplates provided with stops and supported on the warp-threads, a tube having a slot, a rocking member in the tube, means for operating the rocking member, and means connected with the tube for stopping the loom upon the breaking of a warp-thread and the entering of the stop on a detector-plate into the slotted tube, as described.

2. In a warp stop-motion, the combination with a series of detector-plates provided with stops and individually supported on warpthreads, of a longitudinally slotted tube, journal-bearings supporting the ends of the tube, a rocking member in the tube, means for operating the rocking member across the slot in the tube, a stop-rod provided with a knock-offshoulder, and mechanism connected with the knock-01f rod and the tube, whereby upon the breaking of awarp-thread and the dropping of the detector-plate the rocking member and the tube are caused to move together and the loom stopped, as described.

3. A detector-plate for a warp stop-motion for looms having an oblong opening with parallel sides, one end of which opening is curved inward to a central stop projecting into the opening, and an eye or opening for the passage of a warp-thread, as described. a

t. Ina warp stop-motion for looms, the combination with the tube b having the slot 1), the lever 5 the connecting-rod b the stoprod 1) provided with a knock-off shoulder and connected with the knock-0E lever, and the shaft fhaving the crescent portion, of the detector-plate 6 having the projection e extending into the opening of the detector-plate and adapted to enter the slot 1), whereby the crescent-shaped section may be locked to the tube upon the breaking of the warp-thread, as and for the purpose described.

5. In a warp stop-motion for looms, the combination of the following instrumentalities: a longitudinally-slotted tube, a vibrating member in the tube, mechanism for operating the vibrating member, a series'of detector-plates supported on the warp-threads, an oblong opening in each detector-plate, a stop projecting into the opening at one end and adapted to enter the slot in the tube upon the breaking of the warp-thread, and mechanism connecting the tube with the stop-lever of the loom, as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY A. OVEN.

\Vitnesses:

J. A. MILLER, J r., A. E. HAG-nary.

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