Hook timing arrangement for zig zag sewing machines

Details Hook timing arrangement for zig zag sewing machines Hook timing arrangement for zig zag sewing machines

1989-03-22

1990-05-15

Falik, Andrew M.

Sewing

Stitch forming

Revolving-hook type

112190, D05B 302, D05B 5700

Patent

active

049247883

ABSTRACT:
In a zig-zag sewing machine wherein a sewing needle is shifted laterally with respect to a hook rotated about a fixed axis, the hook is optimally timed with respect to the needle at each shifted stitch position of the needle by accelerating rotation of the hook to advance it into optimal disposition relative to the needle at one stitch position of the needle and decelerating rotation of the hook to retard it into equally optimal disposition relative to the needle at the other stitch position of the needle.

REFERENCES:
patent: 1159523 (1915-11-01), Miller
patent: 2690723 (1954-10-01), Sudo
patent: 2932268 (1960-04-01), Johnson
patent: 3490401 (1970-01-01), Hamlett
patent: 3779187 (1973-12-01), Adams
patent: 3783810 (1974-01-01), Marforio
patent: 3804042 (1974-04-01), Ross
patent: 4357887 (1982-11-01), Hara et al.
patent: 4662292 (1987-05-01), Koike et al.
patent: 4674423 (1987-06-01), Koike et al.

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