US628893A - Loom. - Google Patents

Description

No. 628,893. Patented July I], I899.

J. H. NORTHRUP.

Loom.

(Application filed Ap {No Model.)

1U Miran 'STA'rns 'FArieMr @rrres.

JAMES 1-1. NORTIIROP, or HOPEDALE, MAssAonusE'rrs, ASSIGNOR TO THE DRAPER COMPANY, or SAME PLAoE AND PORTLAND, MAINE.

LOOM.

sPnoIrIcArrIon foriiaing part of Letters Patent No. 628,893, dated. my 11, 1895.

Application filed April 9, 139 3.

To all whom, it may concern:

Be it known that I, JAMES H. NORTHROP, of llopedale, county of Worcester, and State of Massachusetts, have invented an Improve ment in Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This-invention has for its object the production of novel means for automatically effecting the stoppage of a loom when the shuttie is not properly boXed in the shuttle-box, the shuttle-box being provided with any suitable form offront binder, which is constructed and arranged to operate with the usual frog device of the protector mechanism.

Figure 1 is a front elevation, centrally broken out, of'a lay and the parts carried thereby to illustrate myinvention; and Fig. 2 is a transverse sectional view thereof on the line 00 as, the breast-beam, protector mechanism, and a portion of the loom-frame being shown.

The loop side A, the breast-beam A, having the usual notched holding-plate A for the shipper-handle S,and the knock-off arm a, f ulcrumed at a and having a depending finger (t actuated by the slide-block or frog-carrier a as shown in Fig. 2, may be of usual construction, the said slide-block being located at, the side of the loom adjacent the shipper-lever S.

The main crank-shaft C has fast thereon a fly-wheel 0, adjacent to which is mounted a brake-shoe C suitably pivoted on the loom side, the shoe having a projection 10, to which is secured a brake-rod C slotted at its front end at C to embrace a stud 12-on the slideo. block a I have herein shown a cast-iron lay B, having shuttle-box backs B, and provided with front binders B pivotally mounted on the lay at B stops B attached to the lay at the entrance of the shuttle-boxes, limiting the inward movement of the binders. Bearin gs b are secured to the lay to receive a two-part rock-shaft at 02, connected by a coupling d the outer ends of the parts being bent up to form binder-fingers (Z d", which are held Serial No. 676,980. (No model) against the binders 13 by a spring S at taohed at one end to the rock-shaft and at its other end to the lay; Near one end of the lay, at the side of the loom adjacent the shipper-lever, I have attached to the rock-shaft a hook-like dagger d extended 'rearwardly below the lay and adapted at times to engage the notched part or frog a of the slide-block a to thereby move the latter forward as the lay beats up and effect the release of the shipper-leverfrom its holding-notch, bringing the protector mechanism into operation. Such movement of the slide-block acts through the rod 0 to move the brake-shoe C into engagement with the fly-wheel to effect the stoppage of the crank-shaft, the momentum of the lay being thus utilized to apply the brake whenever the protector mechanism operates. So far as I am aware, this is new in front binderlooms. The spring S presses the front bind- 7o ers in ward, and the hook d is then in position to engage and move the block a as the lay beats up; but if the shuttle is properly boxed the binder will be pressed outward, rocking the shaft d d and lifting the hook into the dotted-line inoperative position shown in Fig. 2. If the shuttle is improperly boxed, the binder will not be moved outward and the hook d will operate the protector mechanism and stop the loom.

' Any suitable form of front binder may be employed, and it will be seen that the hook is located close to the protector mechanism, obviating the use of intervening connections.

Heretofore, so far as I am aware, front binder-looms have been provided with a dagger located at the center of the lay and projecting forward therefrom to effect the operation of a knock-off device located substantially at the center of the breast-beam, and 9:) this construction practically prohibits the use of a metallic breast-beam, as the shock is very apt to break it. For this reason front binders have heretofore been limited in their use to looms provided with wooden breast-beams. By utilizing the usual'frog device, as in my present invention, the strain comes upon the loom side on which the frog-carrier travels, the loom side being a heavy metal casting adapted to withstand any amount of compres- I09 sive strain. lVith front binders the rockshaft is turned forward and downwardly when the shuttle is properly boxed, so that a dagger or other device could not be attached to such shaft to extend forward, for the dagger would be depressed into position to engage the frog when the shuttle is properly boxed. It is necessary, therefore, in my invention to extend the dagger or book rearwardly from the rock-shaft in order that it may be depressed into operative position when the shuttle is not properly in the box. Bysuch construction the dagger is subjected to tensile rather than compressive strain, which is also desirable. The operation of such a device does not admit of the utilization of the momentum of the lay to aid in bringing pressure upon the brake mechanism, while in my present invention this operation is effected as with the usual back binder-loom.

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

1. In a loom, the lay having a shuttle-box provided with a front binder, normallyinop-- erative protector mechanism,including a sliding member movable on the loom side, and means, including a hook extended ,rearwardly below the lay, and controlled by the binder to engage and move the said sliding member and thereby effect operation of said mechanism when the shuttle is improperly boxed, the hook at such time being subjected to tensile strain, substantially as described.

2. In a loom, the lay having a shuttle-box, a front binder therefor, protector mechanism for the loom, including a frog, an operating tension-hook for and 'to engage the frog of said mechanism, said hook being carried by and extended rearwardly below the lay, and. connections between said hook and binder, to render said hook operative to engage the frog when the shuttle is improperly boxed, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES H. NORTHROP.

Witnesses:

HERBERT S. MANLEY, GEO. OTIS DRAPER.

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