US90364A - Improvement in heddles for looms - Google Patents

Description

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Letters Patent No. 90,364, :lated May 25, 1869.

IMPROVEMENT IN HEDDLES FOR LOOMS.

The Schedule referred to in these Letters 1-1aten'l:4 and making part of the lame.

Las made in accordance with my invention.

This invention relates to improvements in that class of heddles for loom-harness, composed of fibrous material, whereby the friction, or abrasion upon the threads ofthe warp is lessened, and an elasticity ofthe heddle obtained, highly favorable for enabling it to accommo date itself to threads of different sizes and weights, as hereinafter explained.

As heretofore made, heddles for loom-harness ofthe above class, have been usually composed of a twisted cord, and the eyes formed therein by tying the two Vcords together in knots, one at each end of the eye.

Heddles have also been made of strands ofunspun yarn, twisted so as to form the eye without knotting, as shown iu Letters Patent to Kasimir Vogel, dated December 10, 1846. y

In practice, it has been found that the knots cause more or less abrasion of the threads of the warp, as they pass by them in being raised and lowered.

It has also been found that the heddle, when formed of unspun yarn,twistcd and not knotted,as last above mentioned, is not elastic to any appreciable extent, and is, moreover, liable to twist and turn the eye and thread out of place; and, moreover, the proper manufacture of such heddles requires a special machine for the purpose, in which but one at a time is twisted.4

To obviate these and other objections, I make the heddles of braid, and form vit of a crochet, or loopstitch, which does away with the necessity for knot-4 ting, renders the heddle elastic, and removes all liability of twisting and turning the parts out of place; and as they can be made in a continuous string, and in a knitting-machine used for other purposes, which can crochet five hundred or more of the heddlesat one time, if necessary, they can be produced not only much better, butalso much cheaper than has heretofore been practicable.

In the drawing, above mentioned as accompanying this specification, a heddle is shown as composed of two cords, or strands, a a, composed of any suitable fibrous material, formedof a series of loop, or crochetstitches, which form of stitch enables the union of the two cords t be readily accomplished, and is, to a considerable extent, elastic.

In carrying out 'my invention, I employ a machine suitably constructed for the purpose, and so operating, when knittingr the two cords, as to intervene or interlace the stitches of such cords at two points, at various given distances in the entireV length of the cords, such cords being subsequently sundered at points intermediatc between each series of interlacings, by this means producing sections of a. proper length for a hed. die, as will be readily understood by persons conversant witlLthe craft' to which my invention appertains.

The drawing shows one heddle, the cords a a of which are interwoven or interlaced at'two points, as

shown at bb, by this means forming a short enclosure, c, between such points of intersection, of a proper length for the eye of the heddle.

It will be seen that the mode of joining the two cords to form the eye of the heddl, as above explained, tends to reduce the bulk of the two cords, rather than to produce a considerable enlargement of such bulk, as in the case of a knot; consequently, the eye of the heddle will passand repass the thread ofthe warp next adjacent to it, without being caught upon, or abrading such cordau advantagewhich will be readily appreciated by weavers.

In addition to this advantage, the characterof the article, of which the cords a a are composed, renders such cords, to a considerable degree, elastic, and enables them to accommodate themselves -to the varying strain consequent upon the use of threads of different sizes.

Having now described my invention, and the mauner in which the same is or may be carried into effect,

I would state that I do not claim, broadly, joining the strands of a iibrous heddle so as to form the eye without increasing the bulk of' the heddle at the point of junction ofthe strands; but

What I do claim, and desire to secure by Letters Patent, is

A knitted heddle,'1nade in the manner and for th purposes shown and specified. f

` ED WIN GEORGEJELLEY.

Witnesses.:

Gao. F. PAYNE, Hokuto H. BANCBOFT.

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