Sewing machine

Sewing – Special machines – Darning

Patent

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Details

112118, 112275, D05B 6924, D05B 1100, D05B 2100

Patent

active

046744215

ABSTRACT:
A sewing machine has a rotatable machine head and a bobbin drive unit which is rotated in synchronism with the machine head. The machine head and a needle reciprocally movably mounted on the machine head are independently driven through coaxially disposed inner and outer shafts. The reciprocal movement of the needle is detected by a detector mounted on the machine head. When only the machine head is required to be rotated, the shaft for driving the needle is also rotated so that the needle is held in its top dead point.

REFERENCES:
patent: 4325313 (1982-04-01), Kawai et al.
patent: 4365564 (1982-12-01), Sugiyama
patent: 4373458 (1983-02-01), Dorosz et al.
patent: 4512269 (1985-04-01), Bowditch
patent: 4574718 (1986-03-01), Scholl et al.
patent: 4586123 (1986-04-01), Plassmeier

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