US569862A - Setts - Google Patents

Description

(Modelt) W. P. DRAPER & J. H. NORTHROP. SELF THREADING LOOM SHUTTLE.

N0. 569,862. Patented 001;. 20, 1896.

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UNITED STATES ILLIAM F. DRAPER AND JAMES H. noR'rnnoP', or 'HOPEDALE, Massachussr'rs, ASSIGNORS TO GEORGE DRAPER it sons, or SAME PLACE.

PATENT riuon.

SELF-Tl-iREADING LOOM-S HUTTLE.

SPECIFICATION forming part of Letters Patent No. 569,862, dated October 20, 1896. I

Application filed January 11, 1896. Serial No. 575,108. (Modest) duction of a simple and efiEectiveself-thread-.

ing shuttle having as small a number of metal parts as possible.

Self threading shuttles have heretofore been used to a comparatively limited extent, owing to certain difiiculties encountered in their construction and operation in the loom.

A shuttle having what is technically termed the self -threading feature must have a" free entrance to the thread-eye, as compared with the common shuttle having a closed thread eye or hole, and the existence of an. .open entrance to the thread-eye in the former shuttle of necessity presents an opportunity for the thread of fillin g to escape through such entrance or slot while the shuttie is in operation.

In-the loom the shuttle is thrown from one side acrossthe warp with greatspeed and is suddenly and violently checked at the other side, and the recoil throws the thread of fillin g forward from the filling-carrier or bobbin,

and it is very apt to escape through the entrance-opening. This is one of the main faults in self-threading shuttles. In most shuttles of this character the filling-thread is led through a slot and around acorner or point, so as to be guided into the side eye. This corner or point makes trouble, as the thread, thrown forward from the filling-carrier, as hereinhefore noted, is very apt to loop around the point in such manner as to surely break the thread when the shuttle is thrown on its next flight. It is therefore essential to protect or hide this corner or point in such a way that looping of the filling-thread around it will be prevented.

When self-threading shuttles are used ina loom provided with means for automatic- 5o ally changing its filling, as, for instancefin the loom shown in United States Patent 0.

529,940, dated November 27, 1894, the action of threading is purely mechanical, and consequently a two-part problem is presented for solution-viz., first, to automatically guide the filling-thread by mechanical means into the thread-eye of the shuttle, and, second, to

keep it in the thread-eye after having been guided thereinto. The end of the fillingthread being held or restrained, the flight of the shuttle automatically leads the thread into the eye, the path of the shuttle being such that the thread will be drawn into the filling-slot. As the thread is unwound from the round filling-carrier its rotary motion also is of service in guiding the thread into the eye.

Figure l is a perspective View of a selfthreading shuttle embodying our invention,

showing the thread-eye and parts adjacent thereto. Fig. 2 is an enlarged top or plan view of the delivery end of the shuttle shown in Fig. 1. Fig. 3 is a side elevation of the delivery end of the shuttle. Fig. 4 is a partial sectional viewtakeu below the irregular line w a, Fig. 3 Fig. 5 is a transverse seetwo on the line ax m, Fig. 3, looking toward the left; and Fig. '6 is a similar view on the line 00 1: Fig.6, looking to the right.

The shuttle-body A has an open portion A to receive a suitable filling-carrier or bobbin B, Fig. l, and a central longitudinal thread.

receiving eye a in the delivery end of the shuttle-body extends from the front wall of the opening A in an upward incline beneath the point or beak b of a horn 1). Above this eyethe shuttle is cut away to form a wide entrance or mouth a for an open threadingslot a, leading to the central eye a, said en trance forming with the front wall of the opening A a supplementary horn or corner b above and at one side of the central eye and near the rear end of the slot (1'.

A transverse slot or groove c' is made in the side of theshuttle, extending forward fromthe side eye a beneath the horn b and intersecting the central or threading eye under the point or beak b. This point or beak is herein shown asprotected by. a projection or guard d, illustrated as a lug fastened in the shuttle above but not touching the point 71', leaving the way clear beneath infer the filling-thread to pass around the point I), but

only as it is bent out of line by the projection (I, so that the thread cannot fly up thereafter out of the slot a. The side eye a is partially closed at its frontside by a pin extending upwardly from the ,bottom'of the groove 0 toward butnot quite to' its top, leaving a thread-passage c therebetween, as shown in Figs. 1 and 3, said pin being preferably rearwardly inclined. I r

" The shuttle is preferably provided with shoulder 6 projecting over and protecting the thread as the shuttle is thrown across the warps the first time and before the thread has been guided to the sideieye c. A

A second friction device may be inserted in the central eye a,-if desired, such device being shown as, a roll of felt or other suitablev material f", heldin holes in the shuttle end.

As the shuttle is thrown the first time the filling-thread, in'itsrotary nnwindingmotion off of the filling carrier B, will first be caught by the supplementary horn b and restrained thereby in such position as to naturally lead it into the open mouth at of the slot a. From the open slot a the thread passes into the,

central eye a and between the guard (Z and beakb" into the groove c beneath the horn Z), passing over the friction-pad f. As-the shuttle comes back the thread is drawn into the groove 0, toward the side eye 0, and, passing 3 under the shoulder 0 is drawn over the top of pin 0 through the passage 0 into the side eye 0. Theshuttle is thus automatically threaded at its second throw, and thereafter the thread is delivered from the eye 0 in the 40 y VA self-threading shuttle having in itsdeliv- 4 5 ery end a longitudinal thread-eye and an'open slot leading thereto, a horn forming one side of said slot andqhaving a beak at its front end, combined with an independent guard projecting across the slot above the beak, an

open side eye in the shuttle, and a guard for I the opening of said eye, the horn guiding the thread from the longitudinal'eye to the side eye, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of rtwo subscribing witnesses.

WILLIAM F. DRAPER.

JAMES H. NORTHROR' \Vitnessesi I I Geo. \QTIS DRAPER, C. N. NICHOLS.

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