Weft transfer control system in an air jet loom

Details Weft transfer control system in an air jet loom Weft transfer control system in an air jet loom

1983-12-14

1985-11-05

Jaudon, Henry S.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

D03D 4730

Patent

active

045507538

ABSTRACT:
A weft transfer control system for an air jet loom having a main nozzle and a plurality of weft supply members. The system includes a detecting circuit for detecting the release of a weft that is transferred from one weft supply member to another weft supply member and for generating a transfer signal. A control box includes dials for presetting plural initial supply pressures for the main nozzle, corresponding to each of the weft supply members. The control box receives the transfer signal and generates a control signal corresponding to the preset initial supply pressure for the corresponding weft supply member. An electromagnetic air pressure valve and a regulator adjust the supply pressure to the main nozzle to correspond to the preset initial supply pressure on the basis of the control signal. A delay circuit delays the operation of the electromagnetic air pressure valve for a predetermined time to delay the adjustment to the preset initial supply pressure, so that the change in the supply pressure coincides with the ejection of the transfer tail of the weft from the main nozzle.

REFERENCES:
patent: 4450876 (1984-05-01), van Mullekom

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