Automatic thread tension control sewing machine

Details Automatic thread tension control sewing machine Automatic thread tension control sewing machine

1989-05-03

1990-11-06

Nerbun, Peter

Sewing

Stitch forming

Zigzag

112255, 112302, D05B 302, D05B 4704

Patent

active

049676792

ABSTRACT:
An automatic thread tension control sewing machine comprising thread tension controller for clamping an upper thread with a predetermined pressure to control an amount of the upper thread supplied to a needle and a loop taker, thread tension setting means that determines a pressure with which the thread tension controller clamps the upper thread, upper thread supplying mechanism, a releasing mechanism controlling operation of the upper thread supplying mechanism, and a central processing unit for actuating the releasing mechanism in accordance with a selected stitch pattern.

REFERENCES:
patent: 4649844 (1987-03-01), Matsubara
patent: 4702185 (1987-10-01), Hanyu et al.

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