Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1985-07-18
1988-11-01
Hornsby, Harvey C.
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
139452, D03D 4730, D03D 4736
Patent
active
047812249
ABSTRACT:
A loom is provided with a weft inserting nozzle for picking a weft yarn under the influence of fluid jet and equipped with a weft picking control system which consists of a device for detecting the tension of the picked weft yarn at a timing of termination of travel of the weft yarn in weft picking. The thus detected weft yarn tension is compared with a standard tension by a comparing device forming part of a control circuit thereby to obtain the difference therebetween. The pressure of air to be supplied to the weft inserting nozzle is controlled in accordance with the difference in tension, thus maintaining the weft yarn tension at a constant value.
REFERENCES:
patent: 3678969 (1972-07-01), Gotoh
patent: 4378821 (1983-04-01), Umezawa
patent: 4407336 (1983-10-01), Steiner
patent: 4446893 (1984-05-01), Gunnemann et al.
patent: 4458726 (1984-07-01), Wenig
patent: 4463783 (1984-08-01), Suzuki et al.
patent: 4471817 (1984-09-01), Browwee et al.
patent: 4595039 (1986-06-01), Tholander
Russian Document #632773, Date: Nov. 15, 1978, Title: Weft metering System for Pneumatic Loom-Determines the Frequency of Excess Length Feeding, to Correct Your Tension, 2 pp. of specification.
Gotoh Miyuki
Kawajiri Mitugu
Kobayashi Hiroshi
Hornsby Harvey C.
Machuga Joseph S.
Nissan Motor Co,. Ltd.
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