US149447A - Improvement - Google Patents

Description

D. CTTRELL. weft-Stop Mechanisms for Looms.` N0.149,447.

Patented Apri! 7,1874.

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Uivrrnn STATES@ PATENT @Enron l JESSE D. COTTRELL, OF HOFEDALE, MASSACHUSETTS.

IMPROVEMENT IN WEFT-STOP MECHANISMS F'OR LOOLMS.

Specification forming partei' Letters Patent No. 149,447, dated April 7, 1874; application tiled March 2S, 1874.

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To all whom it may con-cem Be it known that I, Jnssn D. Cor'rnnLL, of Hopedale, in the county of Vorcester and State of Massachusetts, have invented certain new and useful Improvements in Looms; and- I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings forming part of this specification, in which- Figure l is a top-plan view of my, improved loom. Fig. 2 is a sectional view through the line a: x, Fig. l, the lay being thrown back. Fig. 3 is a similar sectional view, the lay being thrown forward; and Figs. 4, 5, and 6 are views of parts shown in detail.

Similar letters of reference in the accompanying drawings indicate the same parts.

My invention relates to devices, which, in combination with devices described in another application now pending, are employed to control the take-up mechanism; and also stop the loom when the wett-thread breaks or is absent.

In the accompanying drawing, A A are the standards or uprights of the loom-frame; and B is the breast-beam, constructed in the ordinary' manner. G is the'lay, pivoted in theY loom-frame, and operated by the crank-shaft D, in the usual manner. On the front face of the race E are attached brackets F F, the upper ends of which are provided with lugs or projections c c, in which are pivoted the levers er a, the front ends of which project beyond the race, and the rear ends ot said levers being provided with prongs or tines. ln the lower ends of the brackets F F, attached to the race, is journaled, in suitable bearings b b, the rock-shaft d, on which is hung the short arm e, which is connected, by a rod, j', with a lever, g, pivoted at h to the cross-beam of the loom-frame. j is a roller, attached to a stud projecting from the side ot' the lever g, and freely turning thereon. G is the driving-shaft of the loom, provided with a gear-wheel, H, which meshes with a gear-wheel, I, on the crank-shaft. J is a cani, on the driving-shaft r G of the loom, and directly under the roller j on the lever g, so that the latter will be elevated or depressed by the revolution ofthe driving-shaft. K K are arms, hung on the rock-shaft d, near its extremities, the opposite ends of said arms being pivoted to the plates m m, which slide in slots made through the race. To the upper ends of the plates m m are attached the right-angled rods n n, which form the grids.

It will be seen 'from this construction that, as the lay is moved backward and the shuttle passes over the race, the grids are raised, allowing the free passage ofthe shuttle under them, the shuttlethread lying on the tines of the lever a. Then the grids descend, they press the shuttle-thread upon the tines of the lever a., thus elevating the rear end of said lever.

O is a plate, attached to the breast-beam opposite the levers c al, and provided with a recess, p, having a partition, q, across it. The partition is provided with a perforation, if', for for the reception of the rounded end sof a latch, t, surrounded by a spring, u', one end of which bears against the partition q, and the other against a shoulder in the latch t. The upper face ofthe shoulder of the latch t is horizontal, and made iiush lwith the rear part of the lever u, attached to the partition q. The face ot' the latch is then inclined, to allow the projection c on the lever u to ride over it. w is a pin, att-ached to the side of the lever u, which engages in a recess in the front part of the latch to hold the latter in place.

By this construction, when there is no breakage or absence of a weft-thread, the rear end oi' the lever a is raised, and strikes in a groove, a', in the outer end of the latch t, driving it-in the recess p of the plate, and throwing down the lever u, which l connect with devices for stopping the loom, and also for controlling the take-up, as shown in an application now pending, and heretofore referred to.

ln case of breakage or absence of a weftthread, the front end of the lever a is not raised, and the lever passes under the latch t, and the loom ceases to operate.

Having thus described my invention, what l claim isl. rlhe recessed plate o, constructed as set forth, in combination with the lever g, driving-shaft G, provided with the cani J, oonwhole constructed and operating in the man neoting-rodf', rook-shaft d, grids m n, and ner and for the purpose'set forth. lever a, substantially as described, and for the purpose Set forth. J ltSSE D. COTTRELL.

2. In combination with the pronged lever a Witnesses:

upon the lay, the recessed. plate o, provided MELVILLE CHURCH,

withA the latch t, spring u', and lever u, the N. K. ELLSWORTH.

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