US351512A - James jackson - Google Patents

Description

(No Model.) A J. JACKSON.

' JAGQ'UARD MACHINE. No. 351,512. Patented oct.- 26, 1886.

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WITNESSES:

UNITED STATES PATENT OFFICE.

' JAMES JACKSON, oE rArEEsoN, NEW JEEsEY.

JACQUARD MACHINE.

SPECIFICATION forming partof Letters Patent No. 351.512, dated October 26, 1886.

Application filed February 20, 1886. Serial No. 192,653. (No model.)

To @ZZ whom it may concern:

Be it known that I, JAMES J AOKSON, of the city of Paterson, in the county of Passaic and State of New Jersey, have invented a new and useful Improvement in Jacquard Machines, of which the following is'a full, clear, and exact description.

The object of my invention is to dispense with twisted cords,'and to facilitate the unhooking ofthe harnessthreads in transferring the same to another machine.

The invention consists in various parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a sectional side elevation of part of a Jacquard machine, showing my improvement. Fig. 2 is a front elevation ofthe same.

Heretofore in Jacquard machines the devices Which carried the harness cf the loom consisted of iron hooks provided on their lower ends with twisted cords, to which were at.- tached at their lower ends the collets carrying the respective th readsl of the harness. The twisted cords had to be of the same length throughout, in order to raise the threads of the harness equally; but it has been found very ditiioult to make twisted cords of the same length. With my invention I dispense entirely with the twisted cords, and at the same time I attach the collets carrying the threads of the harness directly to the hooks.

Each of the hooks A consists of the vertical rod A, which is bent at its lower end to forni the parallel rod A, provided on its upper end with a hook, A, The rod Al is, provided on its upper end with the usual bend, A3, which engages in the well-knownmanner with the cross-bar B, attached to the lifting-frame, which raises the hooks A, and consequently the har ness ofthe loom, in the usual way. vThe parallel rods A and A2 pass through oblong ap i ertures C` in the iiXed upper grate,- C, which is also provided with a ridge, C2, over which fit the hooks A4 when the hooks A are in their lower position. The hooks A also pass through anoblong aperture, D, in the fixed grate D, which is placed above the bends A5 a distance equal to the lift of the Jacquard machine, so

that the bends do not touch the under side of the grate D when the hooks A are in their uppermost position.

To each bend A54 is hooked a collet, E,which vis a bent and twisted spring-.wire having overlapping ends, which are slightly spread apart in order to`hook them over the hook A. Each thread F of the harness ist provided with the usual loop on its upper end, which is passed in between the overlapping ends of a collet, E, and hooked to the lower bend of the Same.

It will be seen that the hooks A, by passing through the apertures C and D in the stationary grates C and D, are guided in their upand-down motion in such a manner that they retain their relative positions. to each other, having no sidewise or endwise motion whatever.

The hook A* passes over the ridge CI on the grate C in the downward movement of the hooks A, so as to prevent the latter from going farther down, whereby they assume the same position that they had before being raised.

In' transferring the harness-threads F from one machine to the other, the upper ends 0f the same are simply unhooked from the collets by slipping their respective loops out between the overlapping ends, or slipping the collets from the hooks, which latter is preferable.

The above mechanism is applicable to jacquards generally and to the machine shown in Patent N o. 230,591, dated July 27, 1880.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l1 The combination, with the hooks A, of the detachable collets E, formed of springwires overlapped at their ends to receive between them the bends of the hooks, substantially as set forth.

2. The combination, with the hooks A and the threads F, `having loops on their upper ends, of the detachable collets E, formed of twisted spring-wires, having their ends overlapped intermediate the ends of the collets to form openings through which the bends of the hooks and the loops of the thread may be passed, substantially as shown and described.

J AMES JACKSON.

Witnesses:

CHARLES DIXON, THOMAS J. CLARK.

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