US339238A - Card steadying pins for prisms of jaoquard mechanisms - Google Patents

Description

(No Model.)

W. WEBB.

OARD STEADYING PINS FOR PRISMS 0F JAGQUARD MECHANISMS. No. 339,238. Patented Apr. 6, 1886.

lTED STATES PATENT OFFICE.

VVILLIAH XVEBB, OF PHILADELPHIA, PEXNSYLVANIA.

CARD-STEADYING PIN FOR PRISMS 0F JACQUARD MECHANISMS.

SPECIFICATION forming part of Letters Patent No. 339,238, dated April 6, 1886.

Application filed November 29, 1884.

T0 aZZ whom it may concern:

Be it known that 1, WILLIAM WVEBB, a subject of the Queen of Great Britain, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful improvements in Card- Steadying Pins for Prisms of Jacquard Mechanism, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of this invention is to so render adjustable the card steadying or retaining pins used upon the faces of the cylinders or prisms of Jacquard machines that the pins can always be made to enter and register with holes previously prepared in the cards for the purpose; and the invention consists of two slotted bars adapted to be placed parallel with the axis of the cylinder, and upon which bars is adjustably secured a slotted bar supplied with the steadying or retaining pins. The last-mentioned bar is secured to the parallel bars by locking-bolts at the points of intersection.

In the accompanying drawings, Figure l. is a face or plan view of one end of a Jacquard cylinder or prism with my invention applied thereto. Fig. 2 is a partial transverse section of the same on line a; x of Fig. 1. Fig. 3 is an end view of the bars and pins detached from the cylinder.

Similar letters refer to like parts in the several views of the drawings of my invention hereto attached.

Referring to Figs. 1, 2, and 3 of the drawings, the part lettered A is an open-mouthed slotted or forked bar, which is supplied with the two card steadying or retaining pins, D

D. The transverse bar A slides at each end upon two slotted parallel bars, B B, which are secured by the wood-screws n a in the cavity 3 of the cylinder y, which screws serve to keep the slotted parallel bars B B firmly within the cavity of the cylinder.

Locking-bolts F F, passing through the slots a a and b b of the bars A B B, respectively, hold all the parts firmly in position when once the pins D I) are placed at the proper points on the face of the cylinder.

Serial No. 149,148. (No model.)

One trouble in weaving when using Jacquard machines upon looms heretofore has been that the cards often come from the cardstamper with the holes for the steadying-pins not in proper relative position to compel the holes for the needles to register properly with the holes in the cylinder, the cards often also from many causes warping and twisting. The pins heretofore used have always been secured rigidly in the cylinder and at astandard point of relationship with the holes for the needles in the same. The result many times has been that the card has extended partially over the needle-holes in the cylinder, causing the needles to catch on the sides of the holes in the cards or the cylinder and not enter these holes, which resulted in not bringing the proper warp-thread to the surface, or else in bringing one of an entirely foreign color, which is a serious defect in the cloth. By the arrangement shown this obj ection is entirely overcome.

The pins having been first placed in position on the cylinder in accordance with the manner in which the cards have been stamped, or to compensate for the twisting, &c., when the cards have become crooked from any cause whatever, the holes for the needles in the cards will be compelled to register properly with the holes in the cylinder, so that the trouble heretofore so common of their not registering properly is entirely overcome by my invention.

Having thus described my invention, I claim the following: The combinatiomwith the rigid parallel slotted bars B B, of the transverse sliding slotted or forked bar A, supplied with steadying or retaining pins D D, and the locking-bolts F F, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM WEBB.

Witnesses:

LEWIS F. BROUS, DAVID H. BUCK.

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