Method for the control of a weft yarn feeding device in a...

Details Method for the control of a weft yarn feeding device in a... Method for the control of a weft yarn feeding device in a...

2005-12-20

2005-12-20

Calvert, John J. (Department: 3765)

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

Reexamination Certificate

active

06976511

ABSTRACT:
A yarn processing system includes a weft yarn feeding device with a control unit and a power loom which consumes weft yarn. In operation, a run-signal is generated by the power loom that initializes the start-up of the weaving operation. A start-signal that is derived from the run-signal is transmitted to the feeding device. The start-signal is generated externally of the feeding device. The drive motor of the feeding device is driven at a predetermined speed, after receiving the external start-signal in order to prevent an undesired reduction of the size of a yarn store by the initial consumption demand of the start-up of the weaving operation of the power loom. A signal transmitting connection is provided in the yarn processing system between the power loom and a control unit of the feeding device for transmitting the start-signal. On start-up of the power loom, the drive motor of the feeding device is operated at a predetermined speed by the control device independent from the size of the yarn store in the feeding device.

REFERENCES:
patent: 5119998 (1992-06-01), Tholander et al.
patent: 5285821 (1994-02-01), Fredriksson
patent: 0 114 339 (1987-06-01), None
patent: WO 89/08600 (1989-09-01), None

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