Apparatus for sewing a thread chain in a chain stitch sewing mac

Sewing – Elements – Thread cutting – severing or breaking

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112DIG2, D05B 6500

Patent

active

055821219

ABSTRACT:
An apparatus for a chain stitch sewing machine, for automatically shifting a thread chain from the stitching area to its opposite side and holding it there, and for stitching the thread chain neatly onto the initial seam on a fabric supplied successively to the sewing machine. A nozzle for blowing the thread chain forwardly is provided behind a presser foot of the sewing machine. In front of the needle hole of the presser foot, an opening vertically penetrates the presser foot located backwardly of a double chain stitch needle relative to the direction of movement of the material for guiding the thread chain, and a groove is formed on the lower surface of the presser foot from the hole toward the opening. A thread chain suction tube is provided above the opening. The thread chain is precisely aligned on the sewing line by the groove.

REFERENCES:
patent: 5159889 (1992-11-01), Price et al.
patent: 5203270 (1993-04-01), Price et al.

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