US139560A

US139560A - Improvement in stop-mechanisms in looms

Info

Publication number: US139560A
Authority: US
Publication date: 1873-06-03
Anticipated expiration: 1890-06-03

Description

w. EDSON.

Stop-Mechanisms in Looms.

Patented June 3. 187

AM PHDTO-UTHOGHAPHIG a). NY. (aseamzls PRU c5351) UNITED STATES WILLIAM EDSON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE AMERI-y PATENT OFFICE.

CAN STOP-MOTION COMPANY, OF SAME PLACE.

IMPROVEMENT IN STOP-MECHANISMS IN LOOM S.

Specification forming part of Letters Patent No. 139,560, dated June 3, 1373; application filed April 30, 1873.

To all whom it may concern:

Be it known that 1, WILLIAM EDsoN, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Detecter-Gruard for Looms, of which the following is a specification This invention applies to drop-box looms, provided with weft-detecters, in whichthere is a liability of the weft-threads (which are already incorporated in the cloth and are still connected, direct from the nearest selvage to the shuttle) fallin g back upon the lay and so engaging with the detecter as to interfere with its action. The object of this invention is to prevent this falling back of the threads.

Figure 1 is a perspective view ofa part of the lay of a loom showing my invention, and an ordinary detector, looking from the front of the loom. Fig. 2 is a view of the same, looking from the back of the loom. Fig. 3 is across-section through the guard. Figs. 4, 5,-

and '6 serve to illustrate the action of the weft-thread in relation to the detecter and guard.

A represents the lay of a loom and O a comb-weft detecter made in any of the desirable ways. C is an arm extending from the shuttle-box toward the center of the lay, and attached directly to the shuttle-box or to the end of the lay by any suitable device. To the end of this arm, and extending below it, I attach the guard-piece E, Figs. 1, 2, and 3, made to act as a supplement to the lower guard-piece l) also, fastened to the lay, the two pieces E and 1) being placed so as not to touch each other, but yet to act in conjunction to allow of the free passage of the weftthread, when it approaches it from the direction indicated by the arrows T and U; but

to. resist the thread when it approaches from the direction indicated by the arrow V, Figs. 1 and 2. To accomplish this result the guard pieces E and D may be made in a great variety of forms, it being necessary only that they bear a certain co-relat-ion to each other,

as shown. r

The oflice of the guard'may be explained as follows: If we suppose the lay to be retreating, as in Fig 4, then the beaten-up thread R, extending from the shuttle M to the selvage i of the cloth P, must pass through the guard,

' which it will be free to do, as can be seen by inspection of Figs. 1, 2, and 3. If we sup pose the lay, Fig. 5, to be beating up, the

thread R having passed the guard at the previous retreating stroke, and the thread S, if not broken, resting across the detecter, then the guard performs its office of preventing the thread R from falling back onto the detecter 'D, or their equivalents, arranged to operate in conjunction with the lay, substantially as described, and for the purpose set forth.

WILLIAM EDSON.

Witnesses: p

FRANK G. PARKER, JOHN J. HALEY.-