US252438A - Shedding mechanism for looms - Google Patents

Description

(No Model.) 2 Sheet$-$heet 1.

J. BENTON.

SHEDDING MECHANISM FOR LooMs;

No. 252,433. Patented Jan. 17,1882.

WITNESSES: INYENTOR;

ATTORNEYS.

N4 PETERS. Plwko-Lillwgmphcr. wnshinmon, D412.

(No Model.) 2 Sheets-Sheet 2.

J. BENTON.

SHEDDING MECHANISM FOR LOOMS. 110,252,438. iPatented Jan.17,1882.

WITNESSES:

KZQW I ATTORNEYS- PEIKRS. PhawLimognpher, Washingtan. o. c,

v UNITED STATES PATENT OFFICE.

JosEPH DENToN, or PA'TEasoN, NEW -JEnsEr.'

S HEDDING MECHANISM FOR LOOMS.

SPECIFICATIONforming part of Letters Patent No. 252,438, dated January 1.7, 182 2.

Application filed Julie 11, 1881. (No model.)

To all 'whom it may concern 5 Be it known that I, JOSEPH DENTON, ol' Paterson, in the county of Passaic and State of New Jersey, have invented certain useful my improvement shown as applied to aloom.-

Fig. 2, Sheet 2, is a plan view of my improvement. Fig. 3, Sheet 2, is a front elevation of The invention consists in the combination,

with the heddle-slides, and the crank-wheel, the connecting-rod, the rock-shaft, and the rigid arms, of the connecting-rods, the levers, and the stop-board, whereby the inward move;

' ment of the heddle-slides is controlled.

In the accoinpanyingdrawings, Arepresents the frame of a loom, and B represents the beddle-frames.

Tothe bottom bars of the heddle-framesB areattached the branched upper ends of ,the cords C, the lower ends of which are attached to the ends of levers D. TheleversD,at their other ends, are pivoted to the frame A, and to them are attached, or upon them are formed, weights E of sufficient gravity to draw the heddles down promptly as soon as they are released from the power that raised them.

To the top bars of the heddle-frames B, upon the opposite sides of and-equally distantfrom their centers, are attached tlre ends of two cords, F, which pass over two pulleys, G, pivoted to the frameA in such positions that the said cords F will pass vertically from their points of attachment to the heddle-frames B to thesides of the pulleys Gr. Theupper ends of the cords F are attached to thelower sides of the bars H, which slide upon bars I, attached to the frame A, and are made to move back and forth in straight lines by guide-racks J, attachedto the bars I, upon which thesaid bars H rest and slide. With this construction the heddle-irames B are raised by the forward movement of the slides H, and the two cords F and pulleys G cause the said heddle-frames to move up and down vertically and squarely.

To the forward ends of the slides H are hinged the ends of hooksK, which pass through a guide-rack, L, attached to a bar, M, secured to the frame A, so that the said hooks will move forward and back in straight lines. The hooks K are drawn forward at the proper time by the knife or plateN, attached in an inclined position to the bars 0, sh that its lower edge will engage with the hooks K when the said hooks are raised, but, will pass over thehooks when not raised. The bars 0 are hinged'at their outer ends to the lower ends of the arms P, the upper endsof which are rigidly-attached to'the shaft Q. The shaft Q works in bearings in standards 1%, the lower.ends of which are attached to the loom-frame A. To the shaft Q is rigidly attached the end of an arm, S, which projects at an angle a little greater than aright angle with the arms P. H

To the outer part of the arm S is hinged tlie upper end of a connecting rod, T, the lowereiid of which is pivoted to the crank-pin of acrankwheel, U, pivoted to the frame A, and to which motion is given by a belt oi other suitable gearing. To the other end of the shaft Q is rigidly attached an arm, V, parallel with the arms P, or nearly so. To the lower'end of the armV is pivoted a hook-pawl, W, which rests upon and engages with pins, cogs, or teeth attached to or formed upon the wheel X, attached to a journal of the pattern-cylinder Y. The cylinder Y is journaled in bearings attached to the frame A, and in the face of the said cylinder are formed a number of parallel longitudinal grooves, or to it are attached a series of parallel ribs, to allow it to operate as a long chain or lag wheel.

Z are thelags, which are connected in an endless chain of any desired length by links. In each lag Z are formed as many holes as there are hooks K to be used. The holesin the lags Z are in line with the hooks K, and aredesigned to receive pins a, to raise the hooks K into position for the knife N to engage with them to draw the slides H forward and raise the heddies. WVith this construction, by inserting and removing or rearranging the pins to in the lags Z any desired pattern can be woven. To thejournal of the pattern-cylinder Y, opposite the ratchet-wheel X, is attached another ratchet-wheel, b, with the teeth, cogs, or pins of which engages a spring or holding pawl, 0,

- necting-rods, d, the other ends of which are ment.

pivoted to the upper ends of two levers, e. The levers e, at their middle parts, are pivoted to standards f, attached to the frame A, and to their lower ends are attached the ends of a board or plate, g, in such a position that the said board or plate will be directly opposite the inner ends of the slides H. Withthisconstruction, when the knife N is moving inward the slides H, connected with the said knife by the hooks K, also m0veinward,being drawn in that direction by the weighted leve'rsD E until the said slides H meet the inwardly-moving plate 9, and are stopped before the said knife N has rea'cheddhe end of its inward move- The advance of the knife N after the slides H have been stopped withdraws the said knife N from the hooks K and allows the said hooks to drop away from the knife, so that all the-slides H will stand with theirinnerends resting against the plate 9. -As the knife N moves outward it engages with such hooks K as have been raised by the lag-pins and carries the said hooks and their slides H with it, raising the heddles connected with the said outwardly-moving slides. At the same time the plate 9 is moved outward orin the opposite direction, which allows the slides H, resting against the said plates g, to be drawn in the same direction by the weighted levers D E,

lowering the heddles connected with the said slides. By these movements some of the heddles will be moved upward and the others downward, forming a split shed.

When it is desired to form a standing shed the stop-board g is secured in proper position, the connecting-rods d are disconnected, and the connecting-rod T is adjusted to give a longer throw to the knife N, so that the heddles will be raised higher than is necessary in forming a split shed.

Having thus described my invention,I claim I as new and desire to secure by Letters Patent In a loom, the combination, with the heddleslides H and the crank-wheel U, the connecting-rod 'l,,the rock-shaft Q, and the rigid arms S P, of the connecting-rods d, the levers e, and

the stop-boardg, substantially as hereinshown' and described, whereby the inward movement

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