US140098A - Improvement in loom-shuttles - Google Patents

Description

WILLIAM TUCKER, OF FISKEDALE, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND CHARLES F. GROSVENOR, OF SAME PLACE.

IMPROVEMENT IN LOONl-SHUTTLES.

Specification forming part of Letters Patent N0.l40,09@, dated June 17, 1873 application filed April 9, 1873.

To all whom it may concern:

Be it known that I, WILLIAM TUCKER, of Fiskedale, in the county of Worcester, and State of Massachusetts, have invented a certain Improved Loom-Shuttle, of which the following is a specification In the manufacture of cotton cloth, especially, a serious troubleis the occurrence of bad places, or pick-outs in the cloth, where the filling has not been properly laid between the sheds of the warp, owing to imperfect decussation, caused by an entangled loose thread or other obstruction.

This invention relates to mechanism hereinafter described to prevent defective weaving.

A disk, provided with notches in its periphery, and with a perforation to coincide in one position with the tube of the shuttle, is pivoted in the delivery end of the shuttle. A retaining-spring engages with one of the said notches, and holds the disk so that another notch therein is presented above the top of the shuttle to engage any obstructing thread in the upper shed of the warp. WVhen a thread is thus caught, the disk is thereby turned on its pivot, so as to throw its perforation out of coincidence with the shuttle-tube, and, consequently, the filling-thread is held by the disk, and is broken during the completion of the throw of the shuttle, and the loom is thus caused to stop, as, in the event of the filling becoming exhausted, or in any event, no filling is laid up until the defect is remedied.

Figure 1 is a plan view, partly in section, of a loom shuttle illustrating this invention. Fig. 2 is a side view of the same, partly in vertical longitudinal section. Fig. 3 is a partial longitudinal section, representing the disk as turned to break the filling.

To carry out this invention any of the ordinary forms of wooden shuttle may be employed. A short tube, a, for the delivery of the thread is formed on a small disk, b, of variable shape, through which it is secured transversely in the ends of the shuttle, in continuation of the shuttle-tube by a screw or screws, 0. A narrow longitudinal slot is cut vertically through the end of the shuttle, and traversed by a central perforation, and alongitudinal recesss is cut in the bottom of the shuttle for the reception of the three remaining and principal parts of the device. A thin parti-circular metallic disk, 01, is arranged in the first-named longitudinal slot, and pivoted by a pin, 6, occupying the transverse perforation. A spring, f, with a projection, 1, on its upper side, is secured in the recess in the bottom of the shuttle by a screw or screws, 9. A slit, 2, is cut in the tube a for the reception of the edge of the disk, and the latter is formed with a notch, 3, to engage with the projection 1 of the spring f, and with a perforation, 4, which, when the disk is thus held, is coincident with the bore of the tube, a, and the thread of the cop or bobbin is drawn through both, and through the shuttletube, at one operation. The disk is also formed with a square notch 5 which may be a saw-kerf, so arranged that when the disk is held, as aforesaid, the notch 5 is presented centrally at the top of the shuttle to engage from either direction of the throw with any depressed. thread in the upper shed of the warp. In this event, the disk is turned on its pivot 6 against the slight resistance of the spring f, the projection of which may be received in a stop-notch, 6, a pair of which are provided to secure the disk as shifted,

and to limit the movements.

The inclined faces of these notches serve also to enable the spring to assist in shifting the disk after the movements are begun. The disk is nicely balanced, so that the retaining force may be very slight. The object is to simply hold the disk against. accidental displacement by jar. "When the disk is shifted the passage of the thread is rendered tortuous, and the delivery is thus so obstructed as to cause the thread to be broken immediately by the continued flight of the shuttle. The loom now stops automatically, as when the filling is exhausted; or, if it has no stop mechanism, the laying up of filling ceases until the operator repairs the threads.

It will be observed that the thread is not sheared in this arrangement, but is simply held so as-to cause its breakage; and this will usually occur outside of the shuttle, so as not to necessitate ire-threading. The shuttle is returned to working condition by turning the disk, by means of the finger, until the notch 5 is in position, or until the holdingprojection 1 springs into the notch 3.

In lieu of one catch-notch 5, as above described, two or more may be employed; or the top of the disk may be milled to facilitate resetting it. Other details of construction admit of modification.

The following is claimed as new, namely- The pivoted disk d, provided with the perforation 4 and notches 3 5, in combination with the tube a and spring f, applied to a loom-shuttle, and operating, substantially as described, to break the filling-thread when defects occur in the fiber being woven, as

herein set forth.

WILLIAM TUCKER. Witnesses:

HENRY HAYNES, CHAS. F. GROSVENOR.

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