US1906970A - Weft replenishing magazine and bobbin therefor - Google Patents

Description

May 2, 1933.. G y oNs 1,906,970

WEFT REPLENISHING MAGAZINE AND BOBBIN THEREFOR Filed Dec. 7, 1951 smlemtor George (1. Srons l atented May 2, 1933 Rel Lina

GEORGE A. IRONS, OF WORCESTER, BIASSACHUSETTS, ASSIGNOR T0 CROMPTON &

KNOWLES LOOM WORKS, 035 VJOHCESTER, IMASSACHUSETTS, A

MASSACHUSETTS WEFT REPLENISHING 'MAGAZZITE AND BOBBIN THEREFOR Application filed. Beeember 7, 1931.

This invention relates to improvements in weft replenishing mechanisms for looms and the bobbins used therein and it is the general object of the invention to permit the unwinding of weft from a bobbin through the bore thereof without danger of the thread being out when the bobbin rocks against its guideways due to vibration.

In certain types of weft replenishing looms it is customary to arrange the reserve bobbins in stacks and feed them successively to transfer position. The bobbins are located in guideways which determine their path of travel, but ordinarily the weft ends from the bobbins lead to a thread holder adjacent the tips of the bobbins. In the type of loom to which my invention relates the thread holder is located at a point between the magazine and the cloth and the weft is threaded back through the barrel and butt of the bobbin to the holder. A thread guide or slot is provided in the magazine adjacent the butts of the bobbins through which the threads eX- tend.

As the bobbins await transfer they are subject to the vibration in directions both transversely and longitudinally of their axes and it is another object of my invention to notch or similarly form the butt of the bobbins which engages one of the walls of the guideway, the thread finding its position in one or another of the notches so as not to be pinched or abraded when the butt strikes the wall. These same notches are also of value during the transfer in providing small spaces to receive a weft end extending from the outgoing bobbin to the selvage. The notches may be formed in a reinforcing element extending into the bobbin bore near the rings.

l Vith these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

Serial No. 579,625.

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a top plan View of a two cell magazine made according to my present inven tion,

Fig. 2 is a front elevation taken in the direction of arrow 2, Fig. 1, on a reduced scale and showing the thread holder,

Fig. 3 is an end elevation on an enlarged scale of the butt of the bobbin made according to my invention, and

Fig. 4 is a longitudinal section through a bobbin showing the manner in which the weft is threaded.

Referring to the drawing, the magazine M is provided with two guideways and 11 having substantially aligned end walls 12. @n. each side of the vertical center of the magazine are two spaced walls or flanges 13 and 14, respectively, the latter being near the center. The other end of the magazine is provided with a plate 15 having a wall 16 from which project flanges 17 defining guides 18 for the tips of the bobbin. Tie rods 19 hold the end plate 15 to t e main part of the magazine, and the latter may be supported by a foot 20 resting on the breast beam 21 of the loom.

The transferrer T may be actuated in any approved manner and has a foot'22 adapted to engage a bobbin which may rest on the giveways designated generally at 23. The giveways may be of any form and hold a bob bin temporarily and yield at transfer to permit the bobbin to pass into the shuttle S.

My invention relates more particularly to the butt end of the bobbin and the end of the magazine adjacent the butts, and in carrying my invention into effect I separate the walls 12 by means of a slot which extends along and preferably between the guideways 10 and 11. A thread holder H is secured to the loom frame, preferably the breast beam 81, and

CORPORATION OF has wrapped therearound the weft ends E of the several bobbins B.

Each bobbin is provided with a metallic reinforcing element 32 which has its outer end notched as at 33. Each bobbin is also provided with a longitudinal central bore 34 extending throughout its length and through the element 32. The weft W on the bobbin is wound in the usual manner and the free end thereof is threaded through the tip of the bobbin and extends within the bore, emerging from the metallic element and be ing drawn back as at 40 over the corresponding inner guide wall 14:, from whence it leads through the opening or slot 30 to be attached to the holder II.

There is almost always some vibration on the part of the magazine the effect of which is to cause rolling of the bobbins and also endwise movement thereof the effect of which is to cause both the tip and butt ends of the bobbins to move against their respective walls 16 and 12. The tip of the bobbin is usually formed merely of the wood from which the bobbin is made, and there is little likelihood that the yarn will be cut by the wood. The butt of the bobbin, however, is usually reinforced by means of a tube inserted within the bore 3% to serve the same purpose as the element 82 in assisting the rings of the bobbin to withstand the blow of the transfer. As this metallic bushing or ferrule ars or rubs against the walls 12 it abrades the weft when the threading arrangement set forth herein is used. The notches in the element 32 located between projections 35 provide spaces for the threads so that the latter will not be abraded.

The reinforcing element may have a longitudinally extending sleeve or shank 45 through which the bore 34- extends, said sleeve reinforcing the butt of the bobbin in a manner similar to the usual ferrule.

From the foregoing it will be seen that I have provided a bobbin and guide therefor so arranged that the weft may be threaded through the bobbin bore and lead along one of the flanges which define the guide without danger of said thread becoming broken due to endwise thrust of the bobbin butt against an adjacent wall. While the notches have been shown as defined by projections extending toward wall 12, yet I do not wish to be limited to such an arrangement.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is: V

In a weft replenishing loom operating with a reserve bobbin, end and side walls defining a guideway along which the bobbin moves toward transfer position, means located to one side of the guideway to guide a weft thread issuing from the butt of a bobbin located in the guideway and extending around one of the side walls, and a reinforcing element carried by the butt of the bobbin to engage the end wall and having notches in one of which the weft issuing from the butt can lie to avoid abrasion when said element engages the end wall.

In testimony whereof I have hereunto affixed my signature.

GEORGE A. IRONS.

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