US119459A - Improvement in loom-harness-operating mechanisms - Google Patents

Description

ROBERT BURNS GOODYEAR, OF WILMINGTON, DELAWARE.

IMPROVEMENT IN LOOM-.HARNESS-OPERATING MECHANISMS.

Specification forming part of Letters Patent No. 119,459, dated October 3, 1871.

To all whom it may concern:

Beit known that I, ROBERT BURNs GOODYEAR, of Wilmington, Delaware, have invented anew and useful Treadle-Motion for Tappet-Looms for Twilling, of which motion the following is a specication:

The object of my invention is the adaptation of looms to Weaving goods face-side up or down, as desired, without employing complicated strapping, such as has been employed to draw the heddle-leaves up or down. My invention consists: First, of a lifting-lever, in combination with atreadle having pivoted thereon a trigger-shaped treadle-shoe, all as hereinafter described. Second, of a lifting-lever, in combination with two or more of said treadle-shoes and treadles and certain fixed adjustable tappets, all as hereinaf ter described.

In the drawing, Figure l represents a perspective view of a loom-frame provided with my devices, which are shown in detail, enlarged in theV other figures 5 Fig. 2 representing the lifting-lever; Fig. 3, the adjustable tappets or cams on Vtheir shaft; Fig. 4, one of the several similar treadle-shoes; and Fig. 5, one of the several similar treadles' employed.

In Fig. l, a is the loom-frame; c, pivoted levers for raising the heddles up; d, similar levers for drawing the heddles down, the two series of levers being connected by the wires or straps e and f. h h1 h2 are the treadles which work on a shaft or pin, i. j is the driving-shaft. 7c is the pinion on the driving-shaftj gearing into the tappet or cam-wheel m. n nl n2 are the tappets. All these parts are of ordinaryconstruction. o, Figs. 1 and 2, is the lifting-lever, which is rigidly attached to the shaft '5. p, Figs. l and 2, is a crank on 4the drvingshaft. w is the crank-arm which carries the projection wfor squaring or bringing into even line the treadles h h1 h2 when the sheds are closed. The crank-arm w is attached by a iiexible joint to one arm of the two-arm lever y. The other arm of the lever y is attached by a short link or toggle-joint z to the lower end of the lifting-lever o to give the required motion to this lever. The lifting-lever o is provided with the arm q, which acts on the projectionsrof the treadle-shoes, one of which projections is shown in Figs. l and 4. s s1 s2, Fig. l, are the treadle-,shoes They are alike, Fig. 4 being a representation of each of them. The shoes are pivoted to the treadles respectively, as at w, Fig. 5, one shoe for each treadle, under the' tappets, and are each made heavier on one side, as at t, Fig. 4, so that the projections r are caused by gravity to move in the way of the arm q of the lifting-lever.

As the tappets turn they come in contact with the treadleshoes attached to the opposite treadles respectively, and press the treadle-shoes against the treadles, which are then moved on by the continued motion of the tappets. The lower or free end of the lifting-lever o is raisedl and lowered by the crank Aw operating through the levers y and z', causing the arm q ofthe lifting-leverto come in contact with the projections r on such of the treadle-shoes as the tappets have not pressed out of its Way. By increasing or decreasing the number of treadles (each provided with a treadleshoe) and tappets and correspondingly altering the size of the pinion k, the loom can be adapted to the production of various twills.

I claim- 1. The lifting-lever o, rigidly attached to the shaft i, in combination with the treadle h having the movable treadle-shoe s pivoted thereon, all constructed and operating in the manner and for thepurpose substantially as set forth.

2. The lifting-lever o, in combination with the two or more shoes, such as s s1 s2, two or more treadles, such as h h1 h2, and the corresponding tappets or cams, such as n n1 n2, together constituting a treadle-motion for looms, all constructed and operating as set forth.

Witnessesl: ROBERT B. GOODYEAR.

THos. A. BURTT, M. F. WALroN. (60)

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