Method of and apparatus for compensating for weft tension in tra

Details Method of and apparatus for compensating for weft tension in tra Method of and apparatus for compensating for weft tension in tra

1975-07-18

1976-11-02

Jaudon, Henry S.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

D03D 4735

Patent

active

039890694

ABSTRACT:
Method of and apparatus for compensating for weft tension in the region between a fabric selvedge and weft thread spooling units in traveling wave shedding looms wherein the spooling units follow an endless path of which one portion extends in common with another endless path followed by weft thread inserters containing a weft supply package, said weft tension compensation taking place after the respective weft thread spooling unit and the weft thread inserter have left each other and after the latter has entered a weaving shed as well as after the weft thread has been woven into the fabric fell, up to the instant at which the weft thread has been severed adjacent the fabric selvedge, the weft thread withdrawal from the spooling unit being blocked upstream the point of divergence of said respective paths of the weft thread spooling units and the weft thread inserters. In accordance with the invention, after the withdrawal of the weft thread from the spooling unit has been blocked, the path of the weft thread between said spooling unit and said inserter is extended to form a loop reserve produced by the weft supply package received in said inserter, such reserve being released again after the inserter has entered the shed and after the weft thread has been woven into the fabric fell, whereby the weft tension is compensated for by straightening the extended weft path in said region up to the instant at which the weft thread is severed.

REFERENCES:
patent: 3724508 (1973-04-01), Jekl et al.
patent: 3732896 (1973-05-01), Jekl et al.
patent: 3862647 (1975-01-01), Holub et al.
patent: 3862648 (1975-01-01), Langr et al.

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