US516163A - Island - Google Patents

Description

(No Model.)

J. MAGEEL LOOM HARNESS MOTION.

No. 516,163. Patented Mar. 6, 18'94.

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ATENT FFICE.

JAMES MAGEE, OF WESTERLY, RHODE ISLAND, ASSIGNOR OF ONE-HALF TO HARRISON M. LITOHFIELD AND GEORGE F. LAMPHERE, OF SAME PLACE.

LOOM HARNESS-MOTION.

SPECIFICATION forming part of Letters Patent No. 516,163, dated March 6, 1894 Application filed September 21, 1893- Serial No. 486,080 (No model.)

To aZZ whom it may concern.-

Be it known that I, J AMES MAGEE, of Westerly, in the county of Washington and State ofRhode Island, have invented certain new and useful Improvements in Loom Harness- Motions; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to the harness motion of that class of looms using several harnesses, operated by a chain and jack motion, and is intended to prevent the slipping back of a jack, so as to let a harness down after it has been raised, and before it is time for it to be drawn down.

It is fully illustrated in the accompanying drawings.

Figure 1, is a top view of a head or harness motion, showing the position of the jacks, fingers and operating knives, with the guard rod. Fig. 2, is a vertical section taken on'line m, w, in Fig. 1, looking to the left, and showing two jacks with their fingers, the guard, two knives and pattern chain, only. Fig. 3, is a top view of one of the knives, with the guard attached to it. Fig. 4:, is an end view of the knife and guard.

In looms of this kind, after the harness has been and is yet raised, and the pattern chain is moved to take the roll from under the raised finger by reason of the lost motion between the knife and the catch on the finger, the finger is liable to drop and thereby lower the harness prematurely.

In Fig. 1, A, A, are the two side frames of the head that inclose the harness motion, and which are made fast to the end frame of the loom (not shown).

B, is the end of the loom arch, and o, o, are the jacks that are connected at their tops, by cords, to the tops of the harnesses, (not shown) to raise them, and at their lower ends, to the bottom of the harnesses, to draw them down.

5, s, are the fingers connected at their pivoted ends, to the jacks o, o, and having notches forming catches, made on their upper sides, near their pivoted ends, to catch the knife a, when the fingers are raised by a roll 7', on the chain 15, and another notch or catch, is made on their under sides, near their free ends, to catch on the knife d, when that knife moves inward, to draw the harnesses down. The 5 5 knives a, 01, receive a reciprocating motion toward and from the loom,from the arms ryr,

on the shaft b, which has a rocking motion given to it by a crank fast on the main shaft of the loom, connected with the arm g, 'fast' on 6 the shaftb. As we have only the knife a, that raises the harnesses, to consider, the connecting bars of that knife, only, are shown. The bars 11, It, are connected to the ends of the knife a, by ball and socket joints 0, c. The 6 inner ends of the same bars, are attached to the arms r, r, by means of studs.

The knives a, d, are moved by a crank, and are continuously in motion, and as soon as the knife (1., has raised a harness, by pushing on the catch of one of the fingers s, the knife begins to return, and leaves the catch for a lit- 7 tie distance, as a certain amount of lost motion has to be left between the two. This leaves the finger free to drop, as the chain I roll has left it, and there is nothing to hold the harness connected to that jack, up. This allows the slip as it is called, or fall of the harness, too soon. To prevent this untimely drop of the finger, two arms 0, 0, are made fast on the knife a, just outside of the jacks and fingers, one on each side, in such manner as to prevent their turning on the knife, and allowing the rod f, to drop at any time, and the lnner ends of the arms 0, are shaped to form bearings for a small rod f, on which as many friction rolls h, are placed, as there are jacks and fingers. The length of these arms 0, is made ust so as to bring the rolls h, a little way under the inner ends of the fingers s, that 0 are up when the knife a, is against the catch on the top of the finger. (See Fig. 2.) This prevents the finger from dropping so as to allow the catch on it to pass under the knife and let the jack 4), fall back, and the harness 5 attached to it, drop, before the knife has moved the proper distance for the finger to drop and the harness to be drawn down. When the knife has moved the proper distance for the harness to drop the rod f, will 10o havebeen carried out from under the free ends of the raised fingers, by the motion back In a loom harness motion, the combination of the jacks, the hooked fingers pivoted thereto, the lifter and depressor knives, the pattern chain, the guard rod connected to said lifter knife and adapted to ride over the ends of the fingers engaged by the depressor knife, and under the ends of the fingers engaged by the litter knife, substantially as described.

JAMES MAGEE. Witnesses:

BENJ. ARNOLD, E. B. READ.

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