US1495142A - Trailing weft-end-clearer device for looms - Google Patents

Description

May 20 1924; 1,495,142

J. A. SWAINBANK TRAILING WEFT END CLEARER DEVICE FOR LOOMS Filed July 19. 1923 2 Sheets-Sheet. l

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VIII/11111171;

[22 venzar:

J. A. SWAINBANK TRAILING WEFT END CLEARER DEVICE FOR LOOMS May 20 1924. 1,495,142

Filed July 19. 1923 2 Sheets-Sheet 2 fn/veniw':

Patented May 20, 1924.

UNITED STATES:

PATENT OFFICE.

TRAILING WEFT-END-CLEARER DEVICE FOR LOOMS.

Application filed July 19, 1923. Serial No. 652,535.

To all whom it may concern:

Be it known that I, JAMns ALLEN SWAIN- BANK, a subject of Great Britain, residing at Welland, in the Province of Ontario, Do minion of Canada, have invented a certain new and useful Improvement in Trailing Veft-End-Clearer Devices for Looms, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention is applicable to automatic looms employing filling-feelers and of the type wherein the working supply of weft or filling is replenished by automatically inserting a fresh filling-carrier into the working shuttle and' simultaneously ejecting from the shuttle the old filling-carrier from which the supply of weft or filling has been substantially exhausted. When the old fillingcarrier is driven out through the bottom of the shuttle in the replenishing operation, with more or less residue of wound filling still remaining upon the filling-carrier, as is the case in looms in which the replenishing instrumentalities are controlled by filling-feelers, the yarn from this carrier still remains engaged in the eye of the shuttle, so that frequently the old weft-end is held by the shuttle-eye and carried into the warpshed, to produce a fault in the fabric known as a double pick, or else fouls the new weft-end and causes breakage thereof. This failure of the old weft-end to clear itself from' the shuttle-eye is regarded by users of bobbin-changing automatic looms as one of the greatest drawbacks of the looms aforesaid, inasmuch as when the shuttle-eye becomes clogged with lint in the least, or

the shuttle becomes worn on the side thereof so that the groove thereon is shallow, or even when everything is ideal, there is always liability of the old weft-end being dragged into the shed.

arious devices have been proposed for the purpose of preventing the old or trailing weft-end from being carried into the shed as aforesaid, but none of such devices, as far as I am aware, is in general use in practice at the present time.

The invention consists in a weft-end clearer device of novel and improved construction having as a characteristic feature a yarn-engaging member which occupies a stationary forward retracted position while the lay is rearward, and is given bythe.

lay in the latters advancing movement a position at the rear of the path in which the ejected filling-carrier falls from the shuttle, so that as the: lay moves rearward and the said member moves forward. an old or trailing weft-end extending upward from the ejected'bob-bin in the catcher-box to the shuttle-eye will be engaged by such member, thereby providing for clearing the weftend from the shuttle-eye, and safeguarding against such end being carriedinto the shed by the shuttle.

A second feature of the invention is a coacting member with which the member first mentioned cooperates in its retracted position to clamp thefweft-end and thereby more effectually guard against such end being carried into the shed.

The drawings show an illustrative embodiment of my invention combined with parts of a bobbin-changing loom. The general construction of the ordinary types of automatic looms is so well-known and familiar to those skilled in the art that only a frag: mentary-showing and'a very general descriptibn of the parts associated with the operation of my device is deemed necessary.

In the drawings,

Fig. l is a partly sectional view of portions of a bobbin-changing loom, showing an embodiment of my invention applied thereto.

Fig. 2 is a somewhat similar View, on an The lay-beam is shown at 1, and 2 (Figs.

1 and 2) is the breast-beam, upon which is mounted the magazine 3 holding the fresh bobbins or filling- carriers 4, 4, in readiness to be driven down, each in turn, into the shuttle 5 within the shuttle-box 6 011 the lay-beam 1, when the depletion-indicating devices of the loom detect the predeter mined extent of exhaustion of the working supply of filling on the bobbin in the shuttle. In usual practice, the change of bobfront elevation of certain of the stud 1 1 can tip slightly in the said slotfor this purpose, or rise against the resistance of spring 15.

In the full-line position occupied by the clearer device 13 in Fig. i, it serves as a means of preventing an ejected bobbin from getting into the slot 31 in which the pickerstick works inward and outward, and thereby safeguards against breakage of bobbins, and against banging-off of the loom as a result of a bobbin getting into the siot.

If the filling-feeler devices are removed or rendered inoperative and the action of the bobbin-changing mechanism is controlled by the weft-fork mechanism instead, the arm 13 may be utilized solely as a means of preventing bobbin smashes, by adjusting collar 16 t relax spring 15 so that the latter has no tendency to swing the arm 13, and then tightening collar 16 up hard against spring 15, to hold the clearing arm 13 continuously in its rearward position shown in full lines in Fig. 1.

What I claim as my invention is,

1. lVeft-clearer devices comprising a stationary support, a weft-clearer movably mounted on said support, occupying a retracted forward position while the lay is rearward. and actuated by the advancing lay into a position rearward of the path in which the ejected filling-carrier falls from the shuttle.

2. The combination with a stationary support of a weft-clearer movably mounted in connection therewith, occupying a retracted forward position while the lay is rearward and actuated by the advancing lay into a position rearward of the path in which the ejected filling-carrier falls from the shuttle, and means actuating said weft-clearer to engage the trailing weft-end from said filling-carrier as the lay recedes.

3. A weft-clearer for looms comprising a stationary supporting member, a swinging member pivoted thereto adapted to be swung rearwardly by the action of the advancing law-beam into a position rearward of the p: h of the cescendin'g ejected filling-can rier. and means causing said swinging memher to swing forwardly as the lay recedes.

e. A weft-clearer for looms comprising a stationary supporting member, a lever pivoted upon said member having an arm adapted to be struck by the advancing laybeam to swing the weft-end engaging arm thereof to the rear of the path in which the ejected filling-carrier falls, and means for swinging the lever to carry the said weftond. engaging arm forwardly as the lay recedes.

5. A weft-clearer for looms comprising a rearwardly extending stationary supporting member, a swinging arm pivoted to the said supporting member for horizontal swinging movement and having a tail adapted to be struck by the advancing lay-beam to swing thearm rearwardly into position for engagement'with a trailing weft-end,

and a spring serving to swing the swinging arm forwardly as the lay recedes, to en'- gagethe trailing weft-end from said ejected filling-carrier, and also serving to press the swinging arm against the supporting member to clamp said weft-end.

6. A weft-clearer for looms comprising, in combination with the transferrer stud, a supporting arm 'mounted on the transferrer stud, a rearwardly extending arm on said supporting arm adjustably combined therewith, a swinging arm pivoted on said rearwardly extending arm and adapted to be swung rearwardly through contact with the advancing lay into position for engagement with a trailing weft-end, and a spring at the pivotal point to swing the swinging arm forward as the lay recedes so as to engage and carry forward the trailing weft-end, and also to press the swinging arm flatwise against the rearwardly extending arm so as to'clainp the said weft-end between the swinging arm and the rearwardly extending arm.

7. A. weft-end clearer for looms comprising a stationary support, an arm pivotally combined with said support and adapted to be swung in one direction by contact with the lay-beam into position for engagement with a trailing weft-end and a spring operating to swing said arm reversely and to cause it to overlap the other arm so as to clamp the said weft-end between the adjoining surfaces of said arms.

8. A weft-end clearer for looms according to claim. 7 in which one of the pivotally combined members has an oversized hole for the pivot-pin, to admit of divergence of the two members from a parallel relation, to provide for an accumulation of weft-ends between the adjoining surfaces.

9. Trailing weft-end clearer devices comprising a stationary support, a weft-clearer movably mounted on said support, occupying a retracted forward position while the lay is rearward, and actuated by the advancing lay to move its engaging portion into a rearward position adapting such portion to engage a trailing weft-end as the clearer returns forward to its normal position. I

10. Trailing weft-end clearer devices comprising a stationary support, a weft-clearer movably mounted on. said support, occupying a retracted forward position while the lay is rearward, and actuated by the advancing lay to move its engaging portion into a rearward position adapting such portion to ing Weft-end as the'olearer returns to its normal position.

clearer devices normal position, 7 adapted to clamp the thus-engaged trailing 12. Trailing Weft-end clearer devices comprising astationary support, a Weftclearer arm mounted pivotally in connection with said support, occupying a retracted forward position while the lay is rearward, and actuated by the advanoing'lay to move its engaging portion into a rearward position adapting; such portion to engage a trailing Weft-end as the clearer returns to its said Weft-clearer arm Weft-end.

' JAMES ALLEN SWAINBANK.

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