US1268136A - Loom-shuttle. - Google Patents

Description

B. F.. MCGUINESS.

LOOM SHUTTLE. APPLICATION-FILED MAKl 191].-

Patented June 4, 1918.

3.2 lli/4 f BENJAMIN F. IEGGUINESS, OF SANDERSVILLE, MASSACHUSETTS, ASSIGNOR T0 CROMPTON `& KNOWLES LOOl'vI VORKS, 0F WGRCESTER, MASSACHUSETTS, A

CORPOBATIGN OF MASSACHUSETTS.

Loom-SHUTTLE.

Specification of Letters Patent.

Patented Jun@ a, iene.

To all whom t may concern:

Be it known that I, BENLTAMIN F. Mo- GUrNnss, a. citizen of the United States, residing at Saundersville, town of Grafton, in the county of Worcester and State of Massachusetts, have invented a nevv and useful LoomwShuttle, of which the following is a specification.

This invention relates to a loom shuttle particularly designed for use in autoniatic weft replenishing loo-ms of the type in which fresh4 weft carriers are automatically ins'erted` to renew the Weft supply. v

In such loom shuttles it is essential that the thread shall enter the shuttle eye easiiy' andl quickly, and it is also essential that displacement of thethread shall thereafterbe prevented. Owing tothe twist, the thread frequently assumes seemingly impossible positions While ruiming and not infrequently thethreadthereby`escapes from shuttle eyes of the usual type. Such escape ofy the thread is of course objectionable and produces unsatisfactory results.

It is the principal object of my present invention to provide a shuttle eyein which the thread is positively retained in the eye after it is automatically inserted therein. A

further object of my invention is to provide a shuttle eye iiiwvliich thethreading opera tion may be performed-ina most reliable manner andinwl'iich the possi-bility of misthreads is correspondingly reduced. Animportant feature of myinvention also relates to the provision of means for cutting the outgoing thread in the shuttleeye as `the substantially exhausted weft carrier is" ejected from the shuttle. Suitableactuating mechanism is provided for the movable parts, operated in timed relation to the weft replenishing or transfer mechanism. My invention also relates to arrangements and combinations of parts which Will be hereinafter described and more particularly pointed out in the appended elaims.

The preferred form of my invention is shown in the drawings in which- Figure 1 is a top plan viewof a portion of a shuttle `with my invention embodied therein;

Fig. 2 is a side elevation of the parts shown in Fig. 1, the shuttle being cut avvay to show the structure of the shuttle eye;

Figs. 3, 4, 5 and G are transverse sectional views taken along the lines 3*?1, i-4, and 5-5 of Fig. `2, and the line 6-6 of Fig; 1, and

Fig. 7 is a side elevation of the portion of the shuttle shownv in Fig. 1.

VReferring to the drawings, I have shown a portion of a shuttle 10` in which my ifmproved shuttle eye is mounted. The shuttle eye comprises a body member 11 firmly secured in a recess in the shuttle 10 by `means of a stu-dL 12 (Fig. d) extending through an opening in the member and threaded into a nut 13 secured in a recess in the side of the shuttle. A thread passage 14 is formed inthe body member 11, said passage extending longitudinally of the shuttle and communicating at its forward end with a transverse passage formed between the member 11 and the shuttle body l0, and'communicat ing with a slotted sleevcl through which the thread leaves the shuttle.

At a point adjacent the entrance of the thread passage 111 have provided aclosur'e j comprisingan arm 1G pivoted at 17 to the body member 11 and adapted to normally close theopen upper side o'f the passage 1d. The arm 16 is provided with segment tee-th forming apartial pinion positioned for engagement by rack teeth 18 formed on the side of' a plunger 19. This plunger is ver tically slidablein the body member 11 and normally projects above the upper surface thereof, being yieldingly retained in this position by a? fiat spring 20 secured tothe upper end of the plunger and engaging the upper surface of the member 11. The spring 20 thus normally holds the plunger in raised position and holds the arm 1G in the position shown in Fig. 3.

For actuating the plunger 19 I provide an engaging member 2l which may be formed on the transferrer of the weft replenishing mechanism or may be operated in timed re lation with said mechanism. It is essential merely that the engaging member 21 shall depress the plunger 19 as the fresh bobbin is inserted in the shuttle. Such depression of the plunger raises the arm 16 and permits the convenient insertion of the thread from the incoming weft carrier. After the thread is inserted the plunger is allowed to rise, depressing the arm 16 and closing the upper side of the passage 14 so that escape ofthe thread is thereafter impossible.

It is frequently desirable to sever the thread attached to the outgoing weft carrier at the time when the transfer is made, and for this purpose I have provided a movable knife blade 22 secured to a shaft 23 extending longitudinally through bearings in the body member ll and provided at its rear end with a segment pinion 24: engaging a second rack 25 on the lower end of the plunger 19. The movable knife blade 22 coacts with a second knife blade 26 which is fixed to the member 1l.

With this construction it will be evident that the descent of the plunger 19 will depress the blade 22 to sever the thread from the outgoing bobbin at the same time that it raises the arm 16 to permit the insertion of the incoming thread. A coil spring 27 may be provided, surrounding the shaft 23 and having one end secured to the pinion 24. The opposite end of the spring is secured to some fixed member such as the knife blade 26 and the spring coperates with the spring 20 previously described to raise the plunger and maintain the knife blade 22 in inoperative position. Reference to the drawings will show that the spring 20 and the upper end of the plunger` 19 do not project above the upper face of the shuttle 10 even in their raised positions.

Having thus described my invention, it will be evident that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed, but what I do claim is 1. In a loom, a shuttle having a shuttle eye formed with a thread passage therein, a closure for said passage, a plunger vertically movable in said shuttle eye, a rack and pinion connection between said plunger and said closure, transfer mechanism, and a member movable with said transfer mechanism effective to engage and actuate said plunger to move said closure to inoperative position.

2. In a loom, a shuttle having a shuttle eye formed with a thread passage therein, an arm pivoted in said shuttle eye and normally closing the upper side of said passage, a spring effective to retain said arm yieldingly in normal position, transfer mechanism, and means operative in timed relation therewith to move said arm to inoperative position, said means comprising a pinion movable with said arm, a plunger slidable 'm said shuttle eye and having rack teeth thereon engaging said pinion, a member positioned to engage and depress the upper end of said plunger to thereby raise said arm, and means to move said member in timed relation to the transfer mechanism.

3. In a loom, a shuttle having a shuttle eye formed with a threadpassage therein, a closure for said passage, means to actuate said closure, a thread cutter in said shuttle eye, and connections between said closure and said cutter whereby said cutter is actuated in timed relation to said closure.

4C. In a loom, transfer mechanism, a shuttle having a shuttle eye formed with a thread passage therein, a closure for said passage, a thread cutter in saidshuttle, and a member movably mounted in said shuttle and operatively connected to said closure and to said cutter, said member being actuated in timed relation with said transfer mechanism.

5. In a loom, transfer mechanism, a shuttle having a shuttle eye formed with a thread passage therein, a closure for said passage, a thread cutter in said shuttle, a plunger, rack and pinion connections from said plunger.

to said closure and to said cutter, and means associated with said transfer mechanism for actuating said plunger.

In testimony whereof I have hereunto affixedmy signature.

BENJAMIN F. MGGUINESS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, '.D. C.

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