US1734092A - Loom shuttle - Google Patents

Description

Nov. 5,21929. v A. s. HU'rcHlNs 1,734,092

LOOM SHUTTLE Filedv Oct. 5, 1927 l F@ 5 H//m 5mm/g Patented Nov. 5, 1929 UNITED STATS fr; o

ALLAN S. HUTCHINS, 0F WORCESTER, IVIASSACH'U'SETTS, ASSIGNOR TO CROMPTON 85 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS LOOM SHUTTLE Application filed October 3, 1927.

This invention relates to shuttles for use in weaving and more particularly to shuttles used in the weaving of silk weft or other simi- 22 larmaterial. Insuchweaving,itis foundvery desirable to provide some form of slack takeup mechanism in the shuttle itself, to maintain tension on the weft and prevent uncoiling and kinking thereof.

It is the general object of my invention to improve such slack take-up devices as heretofore known, providing a more effective and reliable mechanism, and one by which the desired object may be adequately attained.

My invention further relates to arrangements and combinations of parts which will be hereinafter set forth and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a plan view of a shuttle embodying my improvements;

Fig. 2 is an enlarged plan view of one end portion of the shuttle, partly broken away to show the tension or take-up mechanism;

Fig. 3 is a side elevation of said end portion of t-he shuttle, and y Figs. 4, 5 and 6 are transverse sectional elevations, taken along the lines 4-4, 5 5 andY 6-6 respectively in Fig. 3.

Referring to the drawings, I have shown a typical silk shuttle S having arbobbin B secured therein by clamping jaws 10. Friction material 11, such as soft fur, is provided to engage the weft on the bobbin and prevent premature unwinding thereof.

The front end portion of the shuttle vis provided with a forwardly extending passage 15, open at the top and also open at its rear end to the interior of the shuttle. A slot 16 (Fig. 3) extends downwardly and rearwardly in one side wall of the shuttle and communicates freely in the upper and middle portions of its length with the passage 15.

At its middle portion the slot 16 is provided with a downwardly offset passage 18 communicating with a horizontal slot or opening 20 (Figs. 3 and 5) which preferably extends entirely across the end portion of the shuttle. A pair of pins 22 (Fig. 3) extend across the slot or opening 20 at each side of Serial No. 223,543.

the opening 18, thus providing a delivery passage or eye for the welt W between the pins A wire prong 24 is mounted in the side portion 25 of the shuttle above the slot 16 and projects into a recessed portion 26 formed at the extreme upper front portion of the shuttle and communicating with the slot 16. The weft thread W, when being threaded, finds its way around and under the prong 24 before it enters the slot 16 and offset passage 18.

Tension members I will now describe the provision which I provided two tension arms 30 and 31, mounted on pivots 32 and 33 at opposite sides of the central passage 15.

The arm 3() is best shown in Fig. 6, and is pivoted to swing horizontally in the opening 20. VThe arm has a portion extending upwardly in the central passage 15, and the upper or free end of the arm 30 is offset as indicated at 35. under an overhanging portion of the part 25 of the shuttle, so that the weft W is looped around the upright portion of the arm 30 as the shuttle is'threaded, as clearly indicated in Fig. 2.

A VsuitableV tension device, such as a thin piece of rubber 36, tends to swing the arm 30 yieldingly toward the front end of theshuttle. A p in 37 (Fig. 6) limits such forward swinging movement. i The second tenslon arm 31 is mounted 'a the opposite side of the passage 15, extending across said passage and having a hookshaped portion 40 extending into the lower portion of the slot 16. A tension band or other device 41 swings this arm yieldingly against a stop pin 42 (F ig. A4). The arms'30 and 31 thus tend naturally to assume positions as far as possible separated from each other.

As the shuttle is threaded, the weft W first passes forwardly alongside the arm 30 and then passes rearwardly under the prong 24 and around the arm 30 and over the top of the The offset end projects j weft. This tension is very delicate and has Veye connected therewith, a pair of tension been found very effective in taking up the slack of the weft and thus preventing kinking thereof during the operation of the loom.

Having described my invention and the advantages thereof I do not wish to belimited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is:

1.Av self-threading loom shuttle having a longitudinal passage with a slot and delivery eyeconnected therewith, a pair of tension arms mounted in said shuttle and extending into said passage to engage the weft therein, means to move said arms yieldingly `apart to take up slack weft, and means toguide said weft on insertion in said shuttle automatically about said tension arms and through said slot and delivery eye, said latter means being rendered effective by the movements of the shuttle in the loom.

2. A self-threading loom shuttle having al longitudinal passage with a slot and delivery arms mounted in said shuttle and each extending transversely of said shuttle into said passage, and means to move said arms yieldingly apart to take up slack weft.

3. A self-threading loom shuttle having a longitudinal passage with a slot and delivery connected therewith, a pair of tension arms mounted in said shuttle, one of said arms extending transversely across saidpassage and the other arm extending a substantial distance into said passage, and means to move longitudinal passage with a slot and delivery eye connected therewith, a pair of tension v arms mounted in said shuttle and extending into said passage to engage the weft therein,

v`means to move said arms yieldingly apart,

saidarms having end portions effective to loop the yarn about said arms in position to be tensioned by separating movement thereof, and means to guide said weft on insertion insaid shuttle automatically about said tension arms and through lsaid slot and delivery eye, said latter means being rendered effective by the movements of the shuttle in the loom. v

5. A self-tlireadiiig loom shuttle having a longitudinal passagewith a slot and delivery eye connected therewith, a lpair of tension arms mounted in said shuttle and extending into said passage to engage the weft therein, and means to move said arms yieldingly apart to take up slack weft, one of said arms having a free end projecting into said slot and effective to engageand guide the weft and extending into said longitudinal passage, said inclined slot being positioned in one sideV wall of said passage and having a portion y extended downwardly beyond said delivery eye to form a temporary guiding-passage for the wcf't during the second fiightof the shuttle. Y

In testimony whereofV I have affixed my signature.

ALLAN s. HUTcHiNs.

hereunto ico

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