Right looper release mechanism in overlock sewing machine

Details Right looper release mechanism in overlock sewing machine Right looper release mechanism in overlock sewing machine

1996-08-01

1998-03-31

Nerbun, Peter

Sewing

Stitch forming

Overseaming

112199, D05B 5706

Patent

active

057326398

ABSTRACT:
A right looper release mechanism in an overlock sewing machine is disclosed comprising a vertically movable needle having a needle thread, a right looper disposed under the vertically movable needle and reciprocally movable in a direction crossing the vertically movable needle, a rear driving lever attached to the right looper and engaged in a right looper shaft so as to be freely turned relative thereto, a front driving lever fixed to the right looper shaft, a fixing screw member inserted in a throughhole of the front driving lever so as to be freely turned, said fixing screw member having a male screw being screwed into a female screw 3a of the rear driving lever so as to transmit a motion of the right looper shaft to the rear driving lever by way of the front driving lever, and an elastic member for elastically biasing the fixing screw member in a direction to release the fixing screw member so as to be unscrewed from the female screw of the rear driving lever.

REFERENCES:
patent: 4799440 (1989-01-01), Koshinaka et al.
patent: 4991525 (1991-02-01), De Santis

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