US149448A - Improvement in looms - Google Patents

Description

Ulvrrnn STATES JESSE D. OOTIRELL, OF HOPEDALE, MASSACHUSETTS.

IMPROVEMENT IN LOGMS.

Specification forming part of Letters Patent No. 149,448, dated April 7, 1874; application filed March 28, 1874.

CASE A.

To all whom it may concern:

Be it known that I, JESSE D. OorrnELL, of Hopedale, inthe county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Looms and I do herebydeelare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification, in which Figure l is a side elevation. Fig. 2 is a par-' tial rear elevation. Fig. 3 isa section through line as as, Fig. 4; and Fig. 4 is a front elevation.

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

My invention relates to improvements in the let-ofi and take-up mechanism of looms, by means of which, in the absence or breakage of a weft-thread, said mechanism ceases to operate, and is an improvement on the patent granted to me, dated May 4, 1869, N 0. 89,561.

In the accompanying drawings, A A are the uprights or standards of the loom, in which are journaled the cloth-beam B and yarn-beam O, in the ordinary manner. D is the lay, hung on the rod E, pivoted to the cross-beams F F, connecting the standards or uprights A A. G is the breast-beam, on the upper face of which are securely attached the stands H H, provided with slots I I, extending through them, in which operate the arms J J, attached to the rod K, 3' ournaled in the standards A A, or in brackets attached to the upper part of the loom-frame. L L are projections attached to the upper face of the stands H H, at the ends of the slots I I, and fit into the slotted plates M M, placed over the stands H H. Pivoted in the plates M M are the levers N N, to the upper faces of which are attached the springs 0 0, adjustable by means of slots and screws, or screws to engage with the upper extremities of the arms J J. P P are short slots in the plates M M, in which the short arms of the levers oscillate. Q Q are short levers journaled in the front ends of the slots P P, the outer ends being recessed and lying under the short arms of the levers N N. To the rear ends of each arm Q is attached a vertical finger, R, which, together, form the feeling-fork. In recesses in the race S are securely attached plates 1 'l, right-angularly formed, the vertical part' of which is composed of rods S S. U is a shaft journaled in the cross-bars of the loom, and provided with cranks V V, connected by arms WV W to the lay, and by means of which a reciprocatin g movement is given the latter. X, Fig. 4, is a shipper-rod,journaled in the front standards of the loom, and provided at its ends with right-angled arms Y Y. Z is a bent arm attached to the rod K, the inner end of which projects over one of the cross-bars connecting the standards of the loom. To one end of the rod K is attached the crank-arm a, the outer end of the horizontal arm of the crank being provided with a truck or roller, '1), which operates in a slot, 0, in the pitman d, the inner end of which is eecentrically attached to the crank-shaft U. The outer end of the pitman is governed in its movements by the crank a, and its roller working in the slot 0 of the pitman, and the crank is operated by the arms J J, attached to the rod K through the levers N N. e is a leverjournaled on a stud, f, attached to one of the standards, the upper end of said lever being bent at right angles, the bent portion of the arm lying over the outer end of the pitman. g is a hook or pawl attached to the lever a above its fulcrum, and engages with a ratchet-wheel, 9 on the end of the cloth-beam.

From this construction and arrangement of parts, it will be seen that when the lay moves forward and the weftthread is unbroken, it will be carried forward by the grids on the race, and, striking the feeling-forks It It, will depress the rear ends Q Q, and engage the long arms of the levers N N with the arms J J on the rod K, and the take-up and 1et-off mechanism are operative. In case of the absence of a weft-thread to operate the levers N N, the arms J J will pass under the long arm of the levers N N, being brought into that position by the weight of the crank or bent arm Z, attached to the rod K, in which case the forward end of the pitman is brought in contact with the crank or arm Y Y of the shipping-rod, and the cloth-beam ceases to revolve and stops the loom.

To the lower end of the lever c is attached the rod 9 which passes through a rightangled bracket, l1, attached to one of the crosspieces of the frame. The opposite end of the rod 0 is attached to the lower end of a brake-arm, h, pivoted to a stud on the frame of the loom. The upper end of the brake is curved, as seen at i, to embrace a friction-roller, j, journaled on a stud, 71 attached to the frame of the loom. l is a pinion on the stud 7a, which meshes into a gear-wheel, m, on a shaft, 02, journaled in the standard, the shaft U passing through the standard, and is provided on its inner end with a pinion, 0, which engages with a gearwheel, 19, on the yarn-beam. q is a spring surrounding the connecting rod 9 one end of which spring bears against the bracket h, the other end of the spring bearing against a collar, 1', adjustable on the rod 1 s is a brake, pivoted to a stud, t, 011 a bracket, u, attached to one of the loom-standards, the outer end of said brake bearing" against the under surface of the friction-rollerj. '0 is an adjustable rod passing through an eye or hole in the lower end of the bracket 14. The upper end of the rod 1: lies under and against the brake s when the lay beats up. In all other positions of the lay the brake s rests upon the spring 10, which surrounds the adjustable rod '0. The, lower end of the spring w bears against an adjustable collar,'x, on the rod y is the warp-guide, of the ordinary construction, to one end of which is journaled the arm 2, to the outer end of which is pivoted the rod a, the lower end of which bears against the upper face of the brake s, the rod also passing through an eye in the bracket 16. b a spring surrounding the rod a, the lower end of which bears against a projection on the bracket 11, the upper end of said spring bearing against an adjustable collar, 0.

v The function of the spring (1 is to cause the curved brake s to hold the friction-roller j securely at all times, except when the take-up mechanism operates. The adjustable collar 1" on the rod is used to vary the tension of the springs q.

When the takeup mechanism operates and the curved brake i h is released from contact with the friction-roller j, the tension of the yarn on the warp-guide g depresses the arm 2 and rod to, and removes the brake s from contact with the friction-roller j, and allows the let-off mechanism to operate.

Having thus described my invention, what I claim is,--

1. The stands H H, constructed as set forth, in combination with the slotted plates M M, levers N 0, fork Q It, and arms J J, attached to the rock-shaft K, substantially as described, and for the purpose set forth.

2; The rockshaft "K, provided with the crank a, carrying a truck or roller, 1), in combination with the slotted pitman d and shipper-rod X, having an arm, Y, substantially as described, and for the purpose set forth.

3. The take-up mechanism, consisting of the pitinan d and pawl-lever c, in combination with the connecting-rod g surrounded by a spring, q, curved brake i h, and frictionroller j, substantially as described, and for the purpose set forth. 7

4. The brake sand friction-roller j, in combination with the rods to r, surrounded by springs, adjustable collars w c, and warpguide substantially as described, and for the purposes set forth. 7

JESSE l). UOTTRELL.

\Vitnesses:

lVIELVILLE, CHURCH, N. K. ELLswoR'rn.

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