Thread cutting device of sewing machine

Details Thread cutting device of sewing machine Thread cutting device of sewing machine

1997-05-12

1999-08-17

Izaguirre, Ismael

Sewing

Elements

Thread cutting, severing or breaking

D05B 6500

Patent

active

059377763

ABSTRACT:
A thread cutting device of a sewing machine comprises: a movable knife having a thread pickup portion and being movable between a standby position and a thread pickup position; a fixed knife being movable between a standby position and an operating position close to a needle locating point and cutting sewing threads in cooperation with the movable knife at the operating position; a front stopper for holding the fixed knife at the standby position, wherein the front stopper is released from the fixed knife in the course of the movable knife making a forward movement; and a rear stopper for holding the fixed knife at the operating position, wherein the rear stopper is released from the fixed knife in the course of the movable knife making a backward movement and after the sewing threads have been cut.

REFERENCES:
patent: 3532065 (1970-10-01), Marforio
patent: 4726305 (1988-02-01), Seto
patent: 5469798 (1995-11-01), Gauch
patent: 5481994 (1996-01-01), Ku

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