Yarn clamp

Details Yarn clamp Yarn clamp

1982-10-25

1984-05-29

Jaudon, Henry

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

139450, D03D 4700

Patent

active

044508743

ABSTRACT:
An improved solenoid actuated yarn clamp for controlling the flow of a moving strand of yarn particularly in conjunction with a fluid weft insertion loom. The improved clamp is double acting, being displaced positively between an operative yarn clamping position and an inoperative position releasing the yarn for further movement. The actuation of the clamp in both directions preferably occurs in two stages in which a relatively movable portion of the armature is first attracted into engagement with the energized solenoid, resulting in enhancement of the flux path of the solenoid, causing movement of the remainder of the armature. A preferred electronic circuit for regulating the actuation of the improved clamp is also disclosed which permits the adjustment of the clamping and nonclamping portions of the operative cycle of the clamp.

REFERENCES:
patent: 3393712 (1968-07-01), Fransen
patent: 3565121 (1971-02-01), Suaty et al.
patent: 3791418 (1974-02-01), Pfarrwaller
patent: 4381806 (1983-05-01), Grigas

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