US1581585A - Automatically-threading shuttle - Google Patents

Description

April 20 1926.

H. LUSSIER AUTOMATICALLY THREADING SHUTTLE Filed Dec. 11, 1925 ATTORNEY Patented Apr. 20, 1926.

UNITED STATEfi Parent oFFic HENRY LUSSIER, F SALEM, MASSACHUSETTS,'ASSIGNQR TODRAPER oonronArIoN,

MASSACHUSETTS, A oonronn'rion on MAINE.

AU'roMArIoALLY-THnEADIne SHUTTLE.

Application filed December 11 1925. Serial No. 74,828.

To all whom it may concern:

Be it known that I, HENRY LUSSIER, a

1,483,492, February 12, 1924, there was shown, described and broadly claimed an automatically threading shuttle having a thread passage extending longitudinally thereof andv provided with a thread casting device which functioned to cast or throw the thread upwardly on the formation of a loop or overthrow. In a later, patent granted to Edward S. Stimpson, No. 1,5382%, May 19, 1925,.a further development of the prior patented structure was shown, described and claimed. Shuttles of this type which may be termed thread casting shut-' tles have gone into extensive use, and the present invention is more particularly directed to the general type 'of shuttles shown in the later 'Stiinpson Patent, No. 1,538,224, wherein the threading block had inclined portions extending upwardly and frontwardly from the bobbin chamber, and within the thread passage constituted by the side walls of the block there was located a thread casting device formed as a scroll.

The present invention is more particularly directed to means for protecting the thread casting device from injury or distortion by contact with the bobbin or other device during use, and constitutes a guard for the thread casting device which, as shown in the present instance of the invention, extends above and protects the thread casting device.

In accordance with the present invention, the thread casting device extends into the thread passage wholly below the guard, which is constituted, in the present instance, by the side walls of the threading block.

In the patent to Edward S. Stimpson, No,

The invention and new combination of parts will best be made clear from the following description and the accompanying drawings of one good form thereof.

In the drawings:

Fig.1 is a perspective view of the thread ing end of a shuttle ent invention;

Fig. 2 is a plan view thereof;

Fig. 3 is. an enlarged perspective view with parts of the shuttle body broken away to show the threading block and its asso-.

ciated thread casting device; and

Fig. 4: is a longitudinal sectionof the threading block.

Theshuttle l is provided with the usual provided with the presbobbin chamber 2 in which .the bobbin 3 is'mounted. The means for holding the bobbin in the bobbin chamber is not herein shown because it forms noessential part of the present lnvention.

Frontward of the bobbin chamber 2 the shuttle body, is provided with a threading block receivingchamber 4 and at the forward portion of such chamber the shuttle is provided with aside delivery eye 5 from which the weft or filling thread a is de livered from the bobbin during weaving.

The threading block in accordance with the present invention is formed with a base portion 6 and side walls 7 and 8 between which is the longitudinally extending thread passage 9, and one of the side walls of the threading block, such as 7 in the present instance, is provided with a thread director 10 at its forward portion which extends in a transverse direction relative to the longitudinally extending thread passage.

The side walls 7 and 8 of the threading block are inclined upwardlyand frontwardly from the bobbin chamber, as at 11 and 12, to facilitate the proper upward movement of the weft or filling thread when it is cast from the thread passage on the occurrence of a loop or overthrow and to permit the proper ballooning of the thread on the first pick of the shuttle following replenishment. At its forward portion the base 6 of the threading block is provided with a bridge 13 over which the thread draws during weaving, and from the bridge 13 the thread passes downwardly under a horn 14, as indicated in Fig. 1, on its way to the side delivery eye.

The parts so far described are substantially like those shown and described in the Stimpson Patent, No. 1,538,224, with the exception that the threading block, in accordance with the present invention, is co-extensive with the threading block receiving chamber 4 so that the rear edge portion 15 of the threading block extends to the bobbin chamber, and, as described in the Stimpson patent last mentioned, the threading block may be secured in the threading block receiving chamber by the transverse bolt 16.

The thread casting device, in accordance with the present invention, is mounted in the longitudinally extending thread passage, and has a foot portion 17 which underlies the base of the threading block, and, if desired, the thread casting device may be held in position by the transverse bolt 16, as indicated in Fig. 4. The thread casting device as shown is constituted as a scroll 18 which extends upwardly, laterally and frontwardly from a point adjacent the bobbin chamber, the rear edge portion thereof being formed to cast the thread on the occurrence of a loop or overthrow.

To protect the thread casting device from injurious contact by the end of the bobbin during transfer or from injury by other means, the thread casting device is located wholly below the side walls of the threading block. The rear edge portion 19 of the thread casting device extends upwardly and frontwardly from the bobbin chamber below the adjacent inclined side walls 11, and then turns laterally at 20 and frontwardly at 21, both of said edge portions of the thread casting device or scroll being disposed in the thread passage wholly below and protected by the guard or protecting portions of the threading block. The forward end portion of the scroll 18, as at 22, terminates rearwardly of the bridge 13, but the entire scroll is protected from injurious contact by the incoming bobbin or other means by the upward and inclined side walls of the threading block which extend above the thread casting device or scroll. In other words, the present invention contemplates the provision of a guard for the thread casting device or scroll which in the present instance is constituted by the upwardly inclined side walls of the threading block, the construction being such that should the tip end of the bobbin be projected forwardly or downwardly, it will be engaged by the side walls of the threading block which thus act as a guard to protect the thread casting device or scroll from injurious contact. It may sometimes happen that the shuttle will not be properly boxed on transfer, or the bobbin itself may be projected forwardly by the usual inclined guide at the bobbin holding end of the shuttle, in which case the guard portion of the threading block constituted as heretofore described, will protect the thread casting device or scroll and prevent injury thereto.

The upwardly and forwardly extending edge portion 19 of the thread casting device or scroll extends from one side of the thread passage in a gentle upwardly and frontwardly inclined curve, as indicated in Figs. 3 and 4-, the edge portion being wholly below the side walls of the threading block.

Inasmuch as the threading block of the present invention is coextensive with the threading block receiving chamber formed in the body, the upper inclined portion 11 of the side wall of the threading lo'lock merges into the horizontal portion 23, which is sufliciently high relative to the thread casting device or scroll to protect the latter in conjunction with the similarly horizontal portion 24 of the opposite side wall of the threading block, the construction being such that should the tip end of the bobbin be projected downwardly from a point above the threading block, the tip portion of the bobbin will be arrested by the side walls of the threading block, and injury to the thread casting device or scroll be thereby prevented.

What is claimed is: 1. In an automatically threading loom shuttle, the combination of the shuttle body having a longitudinally extending thread passage, a thread casting device in the longitudinally extending thread passage to cast the thread therefrom on the occurrence of a loop or overthrow, and a guard for protecting the thread casting device constituted by the side walls ofthe longitudinally extending thread passage which extend. in an upwardly inclined direction from the bobbin chamber above the thread casting device.

2. In an automatically threading loom shuttle, the combination of a threading block having a longitudinally extending thread passage adapted to permit'the thread to be cast upwardly therefrom, a thread casting device in the longitudinally extending thread passage for casting the thread on the occurence of a loop or overthrow, and a guard for protecting the thread casting device constituted by the side walls of the threading block inclined upwardly from the bobbin chamber above the thread casting device.

3. In an automatically threading loom shuttle, the combination of a threading block mounted in the shuttle body and. having its side wall inclined upwardly and forwardly from the bobbin chamber, and a thread casting scroll in the thread passage having an upwardly, frontwardly and laterally extending thread casting edge adjacent the bobbin chamber below and protected by the adjacent side wall of the threading block constituted IOU and arranged to cast the thread on the occurrence of a loop or overthrow as the shuttie is arrested in the shuttle box.

it. In an automatically threading loom shuttle, the combination of a threading block having side walls constituting an open thread passage and inclined upwardly and frontwardly from the bobbin chamber, a thread casting scroll. in the thread passage wholly below and protected by the side walls of the threading block and having a thread casting portion extending upwardly and frontwardly from a point adjacent the bobbin chamber below the adjacent inclined side wall and then laterally of the thread passage to cast the thread upwardly on the occurrence of a loop or overthrow as the shuttle is arrested in the shuttle box.

5. In an automatically threading loom shuttle, the combination of a threading block having a longitudinally extending thread passage adapted to permit the thread to be cast upwardly therefrom, a thread casting device in the thread passage having a thread casting portion extending upwardly frontwardly and laterally from the lower portion of the thread passage to cast the thread on the occurrence of a loop or overthrow, and a guard for the thread casting devlce constituted by portions which extend frontwardly in an upwardly inclined direction from the bobbin chamber above the thread casting device.

' In testimony whereof, I have signed my name to this specification.

HENRY LUSSIER.

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