Thread cutting device for a sewing machine

Details Thread cutting device for a sewing machine Thread cutting device for a sewing machine

1993-07-08

1994-12-06

Crowder, Clifford D.

Sewing

Elements

Thread cutting, severing or breaking

D05B 6500

Patent

active

053700732

ABSTRACT:
A movable blade unit in an automatic thread cutting device comprises a plate-like arresting member having an arresting portion for arresting the needle thread and the bobbin thread. A plate-like movable blade provided with a cutting edge cuts the needle thread and the bobbin thread in cooperation with a fixed blade and is disposed under the arresting member. A plate-like guide member is disposed under the movable blade and provided with a guide portion for guiding the needle thread and the bobbin thread arrested by the arresting member into a slit formed in the arresting member. A spacer interposed between the movable blade and the guide member forms a gap for receiving the fixed blade between the movable blade and the guide member. These members of the movable blade unit are easy to form; hence, the movable blade unit can be fabricated at a reduced cost and surely holds and cuts the needle thread and the bobbin thread.

REFERENCES:
patent: 4365568 (1982-12-01), Ross
patent: 4592297 (1986-06-01), Asano et al.
patent: 5027731 (1991-07-01), Sato et al.

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