US1048538A - Thread-stripper for loom-shuttles. - Google Patents

Description

P. HUNT.

THREAD STRIPPER FOR LOOM SHUTTLES.

APPLICATION FILED JAN. 4,1912.

ZUL'roe PatentedDec. 31, 1912.

2 SHEETS-SHEET 1.

Inventor:

Hunt

P. HUNT.

THREAD STRIPPER FOR LOOM sHUTTLm APPLICATION FILED JAN.4.1912.

Patented Dc. 31, 1912.

2 SHEETSSHEBT 2 PATRICK HUNT, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO DRAPER COM- PANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

THREAD-STRIPPER FOR LOOM-SHUTTLES.

Specification of Letters Patent.

Patented Dec. 31, 1912.

. Application filed January 4, 1912. Serial No. 669,508.

To' all whom it may concern Be it known that I, PATRICK HnNT, of New Bedford, -ini the county of Brlstol, in

=the State ofliiassachusetts, have invented a new and. useful'Thread-Stripper for Loom- Shuttles, of which the following is a specification. I

In automatic weft-replenishing looms of the character wherein replenishment is efiected by discharging a spent bobbin or other weft-carrier from the shuttle and inserting a full weft-carrier in theshuttle, it frequently happens that there is a trailing end of thread extending from the spent bobbin [5 the-- eye of the shuttle upon. the discharge which may. not be entirely drawn out from of the spent shuttle." This occasionally hap pens in thecase of that class of such looms in which the replenishment is brought about upon the breakage or complete exhaustion of the running shuttle thread in the event ofthe thread breaking; but it. more fre- "quently' occurs in that class of automatic 'weft replenishing looms now commonly known as feeler looms (such, for example,

i as set forth in United States Letters Patent offiJ. Northrop, Ito/911,672,February 9,

"1909) wherein replenishment occurs prior to the complete exhaustion of the running weft.

Theresult of the trailing end of the dis charged weft thread being left within the shuttle eye'may'be imperfect cloth, thus defeating the object of the feeler looms. -After a full weft-carrier has been inserted in the shuttle and the shuttle makes its first flight therewith across-the loom, the trailing end of the discharged weft-carrier is occasionally drawn by the shuttle through the shed, with the result that there, is a double pick or a partial ,double pick woven into the cloth.

The object of the present invention is to avoid this occasional defect.

To this end the invention comprises an automatic thread stripper, which acts during the discharge of the spent weft-carrier to engage the trailing thread extending from the spent weft-carrier to the eye of the shuttle and to draw upon said trailing thread so as to strip it from the shuttle.

The present invention is illustrated in the accompanying drawings, wherein Figure 1, is a front view'of the replenislr ing end of an automatic weft-carricr roplenishing loom, illustrating so much of the. loom as isnecessary for an understanding indicated by the line 11 in Fig.

- of the present invention, this figure also illustrating a port-ion of the receiver for spent weft-carriers in section in the plane Fig. 2, is a transverse section in the plane indicated by the line 2-2 in Fig. 1.

The. drawings illustrate various well known features of a well-known'type of weft-carrier replenishing looms, the illustrated characteristics being in organization and mode of operation substantially like the corresponding parts set forth in United States Letters Patent of J. II. Northrop, No.

529,940, November 27, 1894.

A, is the lay; B, is the working shuttle shown as occupying the shuttle-box at the replenishing side of the loom; C, is a portion of the rotary magazine or hopper coutaining spareweft-carriers; D, is the oscillating transferrer which descends to transfer a fresh weft-carrier from the magazine into the shuttle and to concurrently drive down the spent wcft-carrier from the shuttle and E, is the swinging transferrer dog carried by the transferrer whiclnavlien a transfer of 'weft-carriers is demanded, is automatically swung upwardly to the position shown in full lines at Fig. 2, where it in the path of a hunter F. carried by the lay. The spent weft-carrier is discharged downwardly through a passage G, in the lay and is directedforwardly by a wcftrurrier guide chute Ill mounted on the luv into a receiver I. In till of these respects the drawings illustrate well-known mochanism Fig. 2, of theidrawings shows a spent wettcarrier J, at the bottom of the receiver I, and shows this spent weft carrier with some weft still on it and a trailing end K, extending from the scent weft-carrier up to and through the eye L (see Fig. 1) of the shuttlc; thus indicating a condition which often exists in the practical operation of these looms and which occasionally gives rise to the defect in the cloth heretofore mentioned.

The thread stripper constituting the present invention is shown as applied to this well-known mechanism.

The transferrer dog E, is shown in full lines in Fig. 2, occupying its uplifted position in the path of the lay buuter F, and the transfcrrcr D, is shown in its depressed position. the lay being substantially at frontcenter. Thus there is illustrated the condi tion which exists just after the spent weftcarrier has been ejected. Fig. 2, shows in dotted lines the normally idle position of the transferrer dog E, and of the arm M, of the transfcrrer to which it is pivoted. The thread stripper O, is mounted upon the transferrer dog E. As shown, the stripper O, is a horizontal arm located just below the guide chute H, and extending nearly the width of the receiver I, and widthwise of the discharge passage G. The thread strip perhas an upwardly extending arm P, at its inner end which is clamped to the transferrer dog by a headed bolt Q. The thread stripper O, is covered with a friction material R, such as felt, or rough cloth, so as more cfiiciently to act upon the trailing thread.

The threadstripper normally occupies the position shown in dotted lines in Fig. 2. \Vhen, however, the weft-replenishing mechanism is set into action on the approaching exhaustion of the running weft, or on its breakage, (as the case may be), the trans-,

ferrer dog E, is swung upwardly to the position shown in full lines in Fig. 2, thus carrying the thread stripper O, backwardly to the position shown in full lines in Fig. 2, where it is directly below the lower end of the weft-carrier guide chute H. The thread stripper and guide chute are brought to this position as the result of the conjoint action of the transferrer dog and the lay in advance of the descent ofthe discharged weftcarrier, so that when said spent Weft-carrier falls into the receiver I, its trailing thread passes in front of the thread stripper Q. then the lay swings backwardly the transferrer dog E, is restored to its dotted line position. thus carrying thethread stripper forwardly to the dotted line position. This movement is completed during the back' ward movement or retreat of the lay and before the lay reaches the position at which the pick of the shuttle takes place. Accordingly, the thread stripping movement of the thread stripper occurs while the shuttle is still within the shuttle box at the replenishing side of the loom. This thread-drawing movement of the thread stripper draws on the trailing thread and pulls it out from the eye of the shuttle. The retreating lay carrying the shuttle backwardly also aids the thread striuper in the performance of its stripping oliice. The result is that no trailing end of the spent weft is left in the eye of the shuttle when it is first picked after being supplied with fresh weft; and consequently there can be no double pick or partial double pick woven into the cloth due to the trailing end of a discharged weftcarrier.

I claim- 1. An automatic weft-replenishing loom of the weft-carrier changing class having, in combination, a lay having a weft-carrier discharge passage beneath the shuttle-box at the replenishing side of the loom and a weftcarrier directing chute to direct the discharged spent carriers forwardly; a transferrer and a swinging transferrer dog; and a thread stripper carried by and moving with said transferrer dog, said thread stripper being located below said chute and extending widthwise of said discharge passage.

2. An automatic weft-carrier replenishing loom having, in combination, a lay having a \vefhcarrier discharge passage beneath the shuttle-box atthe replenishing side of the loom; a transferrer; a transferrer dog; and a thread stripper carried by and moving with said transferrer dog, said thread stripper being located below and extending widthwise of said discharge passage.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses. PATRICK HUNT.

Witnesses:

JOHN B. LowNEY, GERSETH GEILS, J r.

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