Bobbin thread holding device for lock stitch sewing machine cutt

Details Bobbin thread holding device for lock stitch sewing machine cutt Bobbin thread holding device for lock stitch sewing machine cutt

1988-11-21

1990-06-05

Falik, Andrew M.

Sewing

Elements

Thread cutting, severing or breaking

112191, 112260, D05B 6502

Patent

active

049304321

ABSTRACT:
A bobbin thread holding device for a lockstitch sewing machine adapted to temporarily form an entrapping hole under a throat plate wherein a bobbin thread is captured. A recess provided at the sidewall of the throat plate and a hook with a crooked portion at one end form the entrapping hole. A movable blade, provided underneath the throat plate, moves to cut the bobbin thread. In cooperation with the motion of the movable blade, the hook picks up the bobbin thread and, as the bobbin thread is held in the entrapping hole, the bobbin thread is crossed with a needle thread loop.

REFERENCES:
patent: 3386402 (1968-06-01), Ross
patent: 4077342 (1978-03-01), Steckenrider
patent: 4586449 (1986-05-01), Raupach

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