Thread take-up lever driving device in sewing machine

Details Thread take-up lever driving device in sewing machine Thread take-up lever driving device in sewing machine

1992-11-17

1994-07-12

Crowder, Clifford D.

Sewing

Special machines

Darning

112241, D05B 1900, D05C 1100

Patent

active

053278402

ABSTRACT:
In a sewing machine having a needle bar and a shuttle driven by a main shaft and having a thread take-up lever vertically reciprocally movable in response to movement of the needle bar and the shuttle, a thread take-up lever driving device include a stroke adjusting device for adjusting a vertical stroke of the thread take-up lever in response to change of the sewing operation or in response to the material of a work fabric to be sewn.

REFERENCES:
patent: 886574 (1908-05-01), Ammerman
patent: 1101002 (1914-06-01), Zahn
patent: 4295433 (1981-10-01), Desprez et al.
patent: 4412497 (1983-11-01), Teetz et al.
patent: 4719865 (1988-01-01), Yokoe et al.
patent: 5189971 (1993-02-01), Frankel et al.

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