Textiles: weaving – Warp manipulation – Feeding
Patent
1982-09-29
1984-11-06
Kee Chi, James
Textiles: weaving
Warp manipulation
Feeding
139110, 139115, D03D 4914
Patent
active
044806655
ABSTRACT:
A weft-bar (set mark) prevention system for a loom which can prevent a weft-bar caused when the loom is immediately restarted, after the loom has been stopped due to weft- or warp-thread cut (i.e., breakage of a weft or warp thread). When the loom is restarted from the closed-shed state, a greater additional warp tension is applied to the warp threads; when the loom is started from the open-shed state, a smaller additional warp tension is applied to the warp threads. After one or two cycles of the loom motion, the above-mentioned additional warp tensions are not applied, because the main motor is in a stable condition. The system according to the present invention comprises an optical loom-starting angle sensor for detecting whether the loom is started from the closed-shed or open-shed, a counter for determining at least one initial cycle during which warp tension is controlled, air cylinder to push the easing lever in the direction to increase warp tension.
REFERENCES:
patent: 2551920 (1951-05-01), Willis et al.
patent: 2556055 (1951-06-01), Bohan
patent: 2571510 (1951-10-01), Willis et al.
patent: 2737209 (1956-03-01), Meyer
patent: 3495631 (1970-02-01), Sakamoto
patent: 4364002 (1982-12-01), Suzuki et al.
Arakawa Akira
Imamura Shuichiro
Chi James Kee
Nissan Motor Company Limited
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