Method and device for the manufacture of a woven fabric and woven fabric manufactured according to the method
AssigneeTextilma AG
InventorJakob Muller
Life of this patent
Estimating the term…
Abstract
Method and device on a loom for the manufacture of a woven fabric, wherein weft thread loops are formed by a weft thread in a shed formed of warp threads. Through feeding the weft thread in within the warp width and out to both sides over the outermost warp threads while forming loops, a woven fabric is obtained with like fabric edges which can no longer be distinguished optically.
Claims11
In a method of weaving a fabric having two similar edges by means of a loom having a loom reed containing tooth gaps in which at least a weft thread is laid into at least a shed formed of warp threads having a warp direction for the formation of a double-loop extending in zig-zag shape, and in which, to form the edges on both sides of the fabric, alternated left and right looped ends of the double-loops extend beyond the respective outermost warp thread where they are bound with themselves or with an auxiliary thread, glued or fixed together, the improvement comprising the steps of:
- feeding, according to program, for each weft thread insertion a weft thread through one of the tooth gaps of the loom reed to introduce, in the warp direction and within the warp width, said weft thread between two warp threads into a shed formed by the warp threads;
- forming in the shed said double-loop extending in zig-zag shape from said introduced weft thread by means of two weft thread introduction organs arranged laterally of the shed and spaced in the warp direction, one of said weft thread introduction organs pulling or drawing out the weft thread beyond the outermost warp thread on a side of the shed and the other weft thread introduction organ pulling or drawing out the weft thread beyond the outermost warp thread on the opposite side of the shed;
- and
- beating the formed double-loop against a beating edge of the fabric by means of the loom reed.
A shuttleless loom comprising:
- a loom reed for beating of the fabric and provided with tooth gaps for guiding the warp threads of a warp having a warp direction;
- thread guiding means having at least a thread guide arranged behind the loom reed to fed, according to program, at least a weft thread through one of the reed tooth gaps and to introduce, in the warp direction and within the warp width, said weft thread into a shed formed by the warp threads;
- two weft thread introduction organs arranged externally of the shed and movable into the shed;
- said weft thread introduction organs being spaced in the warp direction to catch said weft thread introduced into the shed and conduct it in zig-zag manner across the warp by pulling or drawing said weft thread out to each side of the shed and beyond the outermost warp thread respectively;
- and
- an edge forming means arranged on the loom at each side of the fabric to catch and hold laterally, the outermost weft thread portions conducted into the shed by said weft thread introduction organs so as to form edges of the fabric.
Dependencies are inferred from the claim text.