US1132644A - Heddle for leno-weaving machines. - Google Patents

Description

W. P. WOOD. HEDDLE FOB. LENOWEAVING MACHINES.

\ APPLICATIOKEILED nov, a, 1911.

Patented Mar. 23, 1915. I

KEWOM WILLIAMYP. WOOD, or :PAWTUCKET, RHODE "COMPANY, or PAWTUCKET, RHOJJE IfSLA Is ANn, ASSIGNQR '10 JEnoKns srmnnvq ND; A GORBQRATION or nnopn ISLAND. 1

HEDDLE, FOR LENO-WEAVING MACHINES.

To all whom it may concern Be itvknown that I, WlLLIAM P. Wool), a citizen of the United States, residing at Pawtucket, in the county of Providence and Stateof Rhode Island, have invented certain new and useful Improvements in Heddles forLeno-l/Veaving Machines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as {will enable others skilled in the .art to which it appertains to make andv use the same. 7 i

The invention relates .to doup heddles such as ,are adapted for use in weaving,

gauzeor leno fabrics. Heddles of this type as heretofore constructed have usually been provided With doup loops formed of twine orsimilar flexible material which are rapidly worn, sothat frequent repair or renewalof the doups is requiredwith a resulting increase in the cost of manufacture. At,- tempts have been made to substitute wire for thedoup cords or threads, but such wire doups have not proved satisfactory, owing principally to the increased wear upon the warp threadsdue to the construction of the wire doup, or to the fact that the warp threads, which were not connected with the doup harness, were liable to catch on the ends of the wire doups during the forming of the sheds, and thus interfere with the proper operation of the harness.

It isthe object of the present invention to provide a novel and improved construction ofdoup heddle which will enable the doup loops to be formed of wire or any other desired material without danger of producing undue wear upon the warp threads, or of interfering with the proper forming of the sheds.

To this end the invention consists in the features of construction and combination of parts hereinafter described and referred to in the claims.

The invention will be readily understood from ,an inspection of the accompanying drawings, and the following detailed description of the heddle illustrated therein.

In the drawings Figures 1 and 2 are diagrammatic views illustrating the mode of operation of a heddle embodying the invention in weaving leno or gauze fabric; Fig. 3 is a side elevation of a heddle embodying the invention in its'preferred form; Fig. 4 is an edge view of the heddle shown in Fig.

Specification of Letters Patent. I

Patented Mar. 231, 191-5. er cati na ean ve per 8,1911. .se1-ia11\ro.e5a,o'z9.

3 i is a View s arto Fig. ashoivine the doup loop in a different position; and

Fig.6 isan edge view of theheddle with the parts in the position shown in Fig. 5. A shown inthedrawings the heddle C011".

. sists of a thinimetal striplfand a douploop 2 which is preferably formed of compare tively thin wire. The doup .loop is, bent at its upper end to form an eye 3 ;thro ugh V which the vdoupwarp T passes, and to form ground warp, passes through a heddle 7 and.

thence to the fabric. The heddlesl, 6 and 7 have their upper ends connected by cords with a jacquardjmechanisrn, and are provided at their lower ends .with the-usual lingoes 8. The heddle strips 1 pass through guides 9 which i of the heddle. The lowerends of the doup wires are secured by cords 10 to a frame 11 which is moved up and down by connection with the jacquard mechanism.

In forming a leno shed theheddle 6 and frame 11 move down to carry the doup thread below the ground thread, the legs of the wire doup 2 drawing down through the holes 5 from the position indicated in Figs.

3 and 4 to the position indicated in Figs. 5

and 6. The heddle 6 and frame 11 then move up into theposition indicated in Fig. 2, carrying thedoup thread up on the op posite side of the ground thread and thus carrying the doup. thread about the ground thread to twist the warp thread between suecessive picks. In weaving plain fabric the heddles for the doup warp and the heddle for the ground warp move alternately up and down in the usual manner. A number of warp threads may be led through the doup loop and the heddles for the doup warps may be operated by the jacquard to secure different patterns, as is usual.

In order that the doup Warp thread or threads may be free to draw through. the

prevent turnmg r ilWlSillllg.

end of the doup loop without unduly wearing or straining the doup warp, means is provided for preventing the clamping of the doup warp between the end of the doup loop and the heddle strips 1 when the doup is drawn down into the position indicated in Figs. 5 and 6. In the construction shown, clamping of the doup warp between the end of the doup and the heddle strips is prevented by so shaping the end of the doup loop with relation to the strip 12 between the holes 5 that the legs of the loop engage the edges of the strip 12 before the end of the doup brings up against the strip, and thus prevent the engagement of the extreme end of the doup with the strip. As shown, the upper end of the doup loop is contracted so that it is narrower than the strip between the guiding holes 5 in the heddle strip. \Vith this construction, when the doup is drawn down into the position indicated in Figs. 5 and 6, the upper end of the doup through which the doup warp passes is held above and out of engagement with the strip 12 between the guiding holes 5, so that there is no danger of clamping the doup thread between the end of the doup and the heddle strip, and thus abrading or breaking the warp.

In order that the ground warp may pass freely over the eye 3 of the doup loop as the ground warp travels up and down the side of the doup heddle, the heddle is provided with means for guiding the ground warp over the end of the doup, and thus preventing such engagement of the ground warp with the end of the doup as would interfere with the proper movement of the ground warp. In the construction shown, provision is made for thus guiding the ground warp over the end of the doup by forming a recess 13 in the side of the heddle strip 1 within which the end of the doup wirev is pocketed and protected from engagement with the ground warp while this warp is passing over the end of the doup. The recess 13 preferably extends for some distance above the holes or slits 5, so that the end of the doup will be elfectively protected from engagement with the ground warp passing over it even if the end of the doup projects somewhat through the heddle strip. In this construction the face of the strip 1 on opposite sides of the recess 13 Copies of this patent may be obtained for five cents each. by addressing the forms guides for guiding the ground warp over the end of the doup and preventing its passing between the end of the doup and the heddle strip.

While it is preferred to form the guides for directing the ground Warp over the ends of the doups and to prevent clamping of the doup warp by the doups in the manner shown and described, it will be understood that the specific form of heddle and doup shown and described is not essential to the broader features of the invention, and may be varied and modified without departing therefrom.

Having explained the nature and object of the invention, and specifically described one construction of heddle in which it may be embodied, what I claim is z 1. A heddle for leno weaving comprising a doup loop, a heddle strip provided with holes through which the legs of the doup pass and a strip between the holes, means for guiding the main warp over the end of the doup and means for preventing clamping of the doup warp by the doup, substantially as described.

2. A heddle for leno weaving comprising a heddle strip provided with holes through which the legs of the doup pass and with guides for guiding the ground warp over the end of the doup, and a doup having its end shaped to prevent clamping of the doup warp between said end and the heddle strip between the holes, substantially as described.

3. A heddle for leno weaving comprising a heddle strip, two holes through the strip for the passage of the doup loop, a wire doup having its legs passed through the holes in the strip and having its end contracted to prevent engagement of the eye at the end of the doup with the strip between the holes, and a recess in the heddle strip for receiving the end of the doup, substan tially as described.

4:. A heddle for leno weaving comprising a. heddle strip 1, provided with slits 5, and a recess 13, and a wire doup 2 provided with legs 1 passing through the slit, and with a contracted eye 3, substantially as described.

WILLIAM P. WOOD.

l/Vitnesses:

E. V. GnnvAis, M. C. MULLEN.

Commissioner of Batents,

Washington, D. C.

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