Skip stitch prevention apparatus for sewing machine

Sewing – Stitch forming – Chain or double chain

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Details

112200, 112260, D05B 6300

Patent

active

058485724

ABSTRACT:
A mechanism for a sewing machine for use in forming stitches by use of a looper thread which is controlled by a looper. This mechanism is adapted so that the looper thread which is run from a thread-thru hole to a stitch forming station is prevented from skipping over a needle penetrating point when a looper is moved upon descending of a needle, whereby stitches are formed without any skip stitch.

REFERENCES:
patent: 726310 (1903-04-01), Klemm
patent: 1899828 (1933-02-01), Rubel
patent: 4480562 (1984-11-01), Von Hagen et al.
patent: 4649841 (1987-03-01), Koshinaka
patent: 4690080 (1987-09-01), Mikuni et al.
patent: 5398627 (1995-03-01), Nishikawa
patent: 5467725 (1995-11-01), Fujita et al.

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