US124632A

US124632A - Improvement in let-off mechanisms for looms

Info

Publication number: US124632A
Authority: US
Publication date: 1872-03-12
Anticipated expiration: 1889-03-12

Description

C. R. SAATWEBER.

l-mpovement in Let- Off Mechanism fQr Looms.

Patented March 12,

E El

UNITED CHARLES R. SAATWEBER, OF NEW YORK, N. Y.

Specification forming part of Letters Patent No. 124,632, dated March 12, 1872.

To all whom it may concern:

Beit known that I, GHARLEs Ronnnr SAAT- WEBER, of the city, county, and State of New York, have invented a new and useful Improvement in Let-0ft` Motion for Looms; and I do hereby declare this to be a full, clear, and exact description thereof, which will enable `those skilled in the art to make and use the same, referencebeing had to the accompanying drawing forming part of this specification, in which drawing- Figure l represents a side view of this invention. Fig. 2 is `an end view of the same.

Similar letters indicate corresponding parts. This invention consists in combining with the warp-beam or spool of a loom a doubleof the end ilanges of this beam is formed a,

groove, a, to receive alriction-strap, b, which is wonndround said flange, and the ends of which are fastened to the opposite ends of a double-armed lever, B. This lever has its fulc'rum on a pivot, o, and its `long arm is loaded by a weight, d, which has a tendency to turn the warp-beam in the direction of the arrow marked thereon in Fig. l, thereby exerting on the warp a tension proportionate to the weight and the distance of said weight from the'fulcrum of the lever which supports the same.

I am well aware that single-armed levers with weights and friction-straps have been applied to warp-beams, but the effect of my mechanism is different, as will be readily understood from the following explanation: If the lever B is single armed, the rear end b of the friction-strap is secured to a fixed point; and when the batten strikes up, and the warp-beam is turned forward in the direction opposite to the arrow marked thereon in Fig.\1, said rear end of the friction-strap becomes slack, and the blow of the batten is liable to carry the warp-beam further than desirable by the loosenin g of the friction-strap, thereby producing a slack in the warp, which is `detrimental to the work. It' the warp-beam turns in the direction of the arrow, the leverB swings on its pivot, and the slack which would be produced in the rear end b of the friction-strap is partiallytaken up by the downward motion of the short arm of the lever B, and the danger of carrying the warp-beam too far, and of producing a slack in the warp, is materially lessened by the friction-strap being held taut, and thus prevented from slipping.

This let-oil' mechanism I employ with ad vantage on warp-beams situated beneath the chain; but in looms for weaving corsets or other irregular goods, I have found it convenient to place a portion of the warp-beams or spools beneath, and another portion above the chain.

What I claim as new, and desire to secure by Letters Patent, is-

The double-armed lever B, in combination with the friction-strap l) b and warp-beam or spool A, all arranged and operating substantially as shown and described.

CHARLES ROBERT SAATWEBER.

Witnesses: v

W. HAUFF, E. F. KAsrENHUBER.