Weft thread cutting mechanism for shuttleless looms

Details Weft thread cutting mechanism for shuttleless looms Weft thread cutting mechanism for shuttleless looms

1988-02-03

1989-05-30

Falik, Andrew M.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

139263, 139302, D03D 4734

Patent

active

048341479

ABSTRACT:
A scissors mechanism for cutting the weft thread in a shuttleless loom performs an excess stroke to bring the scissors mechanism, which is combined with a clamping mechanism, as close to the weft thread insertion gripper as possible in order to reduce weft thread waste. For this purpose, the fixed scissors blade is tiltable between a working position and a rest position in a plane extending substantially perpendicularly to the weft thread insertion direction. The movable scissors blade cooperates with a clamping arm for clamping the weft thread just prior to its cutting. For this purpose the movable scissors blade carries a clamping jaw next to its cutting edge and the clamping jaw cooperates with a clamping plate attached to a clamping arm coaxially mounted with the movable scissors blade. An excess stroke motion of the entire mechanism moves the clamp formed by the clamping jaw and the clamping plate into a position close to the gripper guide track after the weft thread has been clamped in the scissors clamp.

REFERENCES:
patent: 3518883 (1970-05-01), Kingdom
patent: 3598158 (1971-08-01), Hall
patent: 3960186 (1976-06-01), Wheeler
patent: 4143684 (1979-03-01), Lindenmueller et al.
patent: 4646790 (1987-03-01), Lutz

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