Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1987-10-02
1989-05-09
Jaudon, Henry S.
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
139452, D03D 4736
Patent
active
048279900
ABSTRACT:
An automatic picking regulating method and an apparatus for carrying out the same are applied to controlling the sequential air jetting operation of the auxiliary nozzle groups of an air jet loom. The auxiliary nozzle groups are arranged along a picking path to jet air so as to assist a picked weft yarn in running along the picking path. The respective jet phase angles of the auxiliary nozzle groups are regulated automatically according to the acutal running speed of the picked weft yarn. The acutal running characteristics of the picked weft yarn are determined on the basis of a holding pin retraction phase angle, namely, a weft yarn release phase angle, and an acutal yarn arrival phase angle measured at a position on the yarn arrival side of the air jet loom, and are represented by a graph showing the relationship between the phase angle of the main shaft of the air jet loom and the picking distance.
REFERENCES:
patent: 3705608 (1972-12-01), Vermeulen
patent: 4262707 (1981-04-01), Suzuki
patent: 4446893 (1984-05-01), Gunneman et al.
patent: 4595039 (1986-06-01), Tholander
patent: 4658865 (1987-04-01), Gotoh
patent: 4673004 (1987-06-01), Rosseel et al.
patent: 4702285 (1987-10-01), Sugita
Jaudon Henry S.
Tsudakoma Corporation
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