Textiles: weaving – Weft manipulation – Special length
Patent
1981-06-22
1983-12-20
Kee Chi, James
Textiles: weaving
Weft manipulation
Special length
139383R, 139430, D03D 1300, D03D 4740
Patent
active
044211422
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a method for the production of a fabric, particularly tape fabric, a loom for the performance of the method and a fabric produced according to the method.
A method for the production of a tape fabric has become known from the German Pat. No. 1,804,973, in which weft thread loops are carried in from both sides of a warp shed and connected by means of an auxiliary thread in the middle of the tape fabric. In that case, the auxiliary thread is drawn each time through the weft thread loop by means of a weaving needle effective perpendicularly to the tape plane and woven with itself at one side of the tape fabric.
Such a tape fabric produced according to the described method displays in its middle a thickening row of stitches, which is disadvantageous not only optically, but the exposed small stitch members of the auxiliary thread can also be easily damaged or destroyed, which has the consequence of the dissolution of the tape fabric.
SUMMARY OF THE INVENTION
It is an important object of the invention to develop a method and a loom for the production of a tape fabric, in which the weft thread loops are connected with one another within the width of the fabric without an auxiliary thread being needed and without danger of a dissolution of the tape fabric existing.
Now in order to implement this object and others which will become more readily apparent as the description proceeds, the inventive method of weaving a fabric, particularly a tape fabric, comprises the steps of laying into a shed formed of warp threads at least two weft threads by means of weft thread introducing organs arranged laterally of the shed, at least one weft thread being fed, prestored according to programme, to the shed through one of the tooth gaps provided in a reed for the passage of the warp threads. The weft threads are then formed into loops which are laid in substantially parallel to the fabric beating edge, the loops are connected with one another within the width of the fabric between two adjacent warp threads by crossing the sides of a loop with the respective sides of the other loop, while for the formation of a fabric edge from said at least one weft thread fed through the reed, said thread is looped with itself or held by means of at least one auxiliary thread.
As to the loom for practicing the method, there is taught a loom, particularly a tape loom, which comprises feed means for programmed prestored feeding of at least two weft threads into a shed formed of warp threads passing through the respective tooth gaps of a loom reed, said feed means being provided with at least two weft thread guides, at least one of which is arranged upstream of the loom reed for guiding one of said two weft threads through one of the loom reed gaps, at least two weft thread introducing organs arranged laterally to the shed in the plane of the fabric being woven and so reciprocable across the shed in the machine rhythm to form said at least two weft threads into loops connected together within the width of the fabric, and at least one knitting tool reciprocable in the machine rhythm for forming an edge of the fabric from said one weft thread guided through the loom reed.
By the method according to the invention, it now becomes possible for the first time to produce a fabric consisting of two weft thread loops free of ladders without use of an auxiliary thread. A fabric can thus be produced with minimum material effort. After the weft threads have been fastened and processed in the fabric, the fabric can no longer be dissolved. Through the weft thread feeding prestored to a program, a fabric of desired density can be produced. Through the simple introduction of the weft threads, a great increase in performance is also made possible in the production of the fabric.
In case auxiliary threads shall be used for the production of the fabric edge, for example for ornamental purposes, this also lets itself be performed readily. Furthermore, three or more weft thread loops can also be introduced into th
REFERENCES:
patent: 1405274 (1922-01-01), Campbell et al.
patent: 1763074 (1930-06-01), Taylor
patent: 3664380 (1972-05-01), Haberhauer et al.
patent: 4181159 (1980-01-01), Frohlich et al.
patent: 4344463 (1982-08-01), Muller et al.
Chi James Kee
Kleeman Werner W.
Textilma AG
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