US1220671A - Attachment for shuttle-changing looms. - Google Patents

Description

APPLICATTON FILED DEC-22,1915- Z 1 9 1 7n 2 M M m t H .w a D 2 SHEETS-SHEET lonms nsrsns m rnomundm. WASHING run: a c

A. F. IVIORELL. ATTACHMENT FOR SHUTTLE CHANGING LOOMS.

APPLICATION FILED DEC. 22,1915.

Patented Mar. 27, 1917.

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ALFRED F. MORELL, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO OROMPTON & KNOWLES LOOM WORKS, 0F WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

ATTACHMENT FOR SHUTTLE-CHANGING LOOMS.

To all whom it may concern:

Be it known that I, ALFRED F. MORELL, a citizen of the United States, residing at Worcester, in the county of Vorcester and State of Massachusetts, have invented a new and useful Attachment for Shuttle-Changing Looms, of which the following is a specification.

This invention relates to an attachment for shuttle changing looms, particularly designed for withdrawing the picker check from operative positionpreliminary to a shuttle change.

The invention is shown as applied to a loom of the type described in United States Letters Patent No. 1,150,477, granted to Wyman and Morell on August 17 1915. In this type of loom a plurality of spare shuttles is provided, together with weft detecting devices which control the transfer of a fresh shuttle upon the substantial or complete exhaustion of filling in the active shuttle. A springactuated picker check is used to position the shuttle within the shuttle box, the check being normally positioned closely adjacent to the end of the shuttle. It has been found that the picker when thus positioned sometimes interferes with the movements of the shuttles during the transfer operation.

It is the object of my present invention to avoid this difficulty by providing means for withdrawing the picker check from its normal position preliminary to the change of shuttles.

In the embodiment of my invention herein shown, this withdrawal of the picker check to inoperative position is controlled by the regular weft detecting mechanlsm of the loom, which may be of any usual type and may become operative on either substantial or complete exhaustion of the weft in the active shuttle.

My invention further consists in certain arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which- Figure 1 is a front elevation of certain parts of a loom with my attachment applied thereto;

Specification of Letters Batent. Patgntgfl lit 2], 191?.

Application filed December 22, 1915.

Serial No. 68,279.

Fig. 2 is a right-hand end elevation of the parts shown in Fig. 1;

Fig. 3 is a top plan View of the picker check and the devices for withdrawing the same from operative position;

Fig. 4; is a right-hand side elevation of the operating cam;

Fig. 5 is a detailed view of the yielding connection through which the cam is operated, and

Fig. 6 is a detailed side elevation of the operating lever and stand.

Referring to the drawings, a portion of the loom frame is indicated at 10, the lay at 11, the picker stick at 12 and the picker at 13. The lay is supported upon the usual sword 14.

The picker check shown in the drawings comprises an arm 15 (Fig. 3) pivoted at 16 to a stand 17 carried by the lay 11. A spring 18 (Fig. 1) normally positions the picker check as shown in full lines in Fig. 3. A leather strap or buffer 19 is stretched across the face of the arm 15 to provide a cushion for the picker stick. The picker check thus forms a cushioned yielding stop for the shuttle and also positions the picker closely adjacent to the end of the shuttle after it is boxed. All of the parts thus far described are old in the art and form no part of my invention.

As above stated, the position of the picker 13 closely adjacent to the point of the shuttle has been found to interfere with the movements of the shuttles during the transfer operation. I will now describe the attaohment by which the picker check is withdrawn from operative position preliminary to the transfer of the shuttles, thus permitting the picker stick 12 and picker 13 to move back away from the shuttle point.

An operating lever 20 (Fig. 6) is pivoted upon a stand 21 carried by the lay 11 and is connected by a link 22 (Figs. 1 and 3) to the arm 15 of the picker check. An operating cam 23 is pivoted at 24: upon the loom frame 10 and is connected by a link 25 to an arm 26 secured to a rock shaft 27 mounted in bearings 28 on the frame 10. The shaft 27 forms a part of the regular weft detecting mechanism fully described in the patent to WVyman and Morell above identified. For the purposes of this appli- .undercertain conditions.

cation it is sufiicient to state that the shaft is given a partial rotation in the direction of the arrow a (Fig. 2), whenever the weft detecting mechanism calls for a change of shuttles.

The cam 23 is normally below the path of movement of the lever 20, as shown in full lines in Fig. 2, but is raised whenever the weft detecting mechanism calls for a transfer of shuttles. In accomplishing this result the arm 26 is moved by the shaft 27 and acts through the link 25 to lift the cam 23 tothe position indicated in dotted lines in Figs. 2 and 4. In this position, the side of the cam engages thelower end of the lever 20, forcing it to the right, and thereby moving the link 22 (Fig. 3) to the left as indicated by the arrow 6. Such movement of the link withdraws the picker check to the position indicated in dotted lines in Fig. 3.

In order to prevent breakage of parts ifthe upward movement of the cam 23 is obstructed I find it desirable to construct the link 25 in such a manner that it may yield One form of yielding link is shown in Fig. 5 in which the two parts 25 and 25 are slidably connected. The minimum length of the link is determined by the position of the collar 25 and the parts are normally contracted to the minimum length by the spring 25. If the movement of the cam 23 is obstructed the link will expand, placing tension upon the cam and moving it to its upper position as soon as the obstruction is removed.

The operation of the device will be clear from the detailed description given but may be concisely stated as follows WVhenever the weft detecting mechanism indicates a change of shuttles the cam 23 will be raised into the path of the lever 20. The shuttle will enter the box with the picker check in its normal position, but as the lay moves forward the lever 20 will be engaged by the cam 23 and the picker check will be withdrawn, this withdrawal occurring between the boxing of the shuttle and the effective operation of the transfer mechanism to change the shuttles. As the lay thereafter moves backward the picker check will be released and will return to its normal position.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims and I do not wish to be otherwise limited to the details herein disclosed.

What I claim is 1. In a shuttle changing loom, in combination, a picker -check, a member effective to cause withdrawal of said check before a shuttle change, a cam mounted on the loom frame and normally removed from the path of said member, and weft-controlled mechanism for moving said cam into the path of said member upon substantial or complete exhaustion of weft in the running shuttle.

2. In a shuttle changing loom, in combination, a picker check, a spring effective to cause said check to stop said shuttle and also to maintain said check in operative position, and devices movable by weft-controlled means to operative and inoperative positions efl'ective when operatively positioned to positively withdraw said check against the pressure of said spring prior to a shuttle change.

3. In a shuttle-changing loom, in combination, a picker check, a spring for moving said check to operative position, and means for moving said check backward against the pressure of said spring preliminary to a shuttle change, said means including an operating cam movable into operative position by a weft-controlled actuating device, said cam and said actuating device being yieldingly connected whereby movement of said cam may be delayed.

4. In a shuttle-changing loom, in combination, .a lay, a spring-actuated picker check and a pivoted lever both mounted on said lay, a link connecting said lever to said check, a cam mounted on the loom frame and normally removed from the path of said lever, and an actuating device connected to said cam, said device being controlled by weft-detecting mechanism effective to move said cam to operative position upon substantial or complete exhaustion of the weft in the active shuttle.

In testimony whereof I have hereunto set my hand.

ALFRED F. MORELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01' Patents,

Washington, I). 0.

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