Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1982-09-09
1985-01-15
Kee Chi, James
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
74 892, D03D 4700
Patent
active
044933479
ABSTRACT:
The present invention relates to a weft insertion device for use on a band-gripper weaving machine. The device has a driven, rotationally oscillating band wheel having a flexible insertion band including a gripper head. The band executes an oscillating movement transversely to the warp shed as the band unwinds from the winds onto the circumference of the band wheel. The circumference of the band wheel is smaller than the maximum excursion of the gripper head. The insertion band is wound around the circumference of the band wheel to the extent of more than 360.degree. when the gripper head is in the position in which the head is fully and maximally withdrawn from the warp shed. In this way, the diameter of the band wheel can be kept small. This small diameter permits operation at high rotational speeds and also renders the band wheel less expensive. This is particularly advantageous when the machine is wide. Further, the contribution to total machine width made by the band wheels is less than under the prior art, and additionally the height of the machine does not need to be increased with a corresponding increase in machine width.
REFERENCES:
patent: 949706 (1910-02-01), Humphries
patent: 3625077 (1971-12-01), Bernard et al.
patent: 4130143 (1978-12-01), Smutny
patent: 4274449 (1981-06-01), Freisler et al.
Chi James Kee
Ruti Machinery Works Ltd.
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