Quick feed drive unit having an electromagnetic clutch, a worm,

Details Quick feed drive unit having an electromagnetic clutch, a worm, Quick feed drive unit having an electromagnetic clutch, a worm,

1989-09-22

1991-04-30

Schroeder, Werner H.

Sewing

Special machines

Buttonhole

112 65, 112 66, 112 67, 112220, D05B 300, D05B 304, D05B 306, D05B 6910

Patent

active

050108328

ABSTRACT:
A quick feeding shaft is rotatably supported at a bed of a perforating sewing machine. A quick feeding shaft rotatable in one direction and has one end coaxially connected to a magnetic clutch shaft and the other end coaxially connected to one end of a quick feeding shaft body provided with a worm. A magnetic clutch is secured coaxially to the magnetic clutch shaft and operatively connects the magnetic clutch shaft to the quick feeding shaft. A pattern wheel shaft is disposed at right angles to the quick feeding shaft and has a pattern wheel for feeding a sewn cloth quickly. A worm wheel coaxially secured thereto at an intermediate portion thereof to mesh with the worm. The worm wheel and the worm form a gear mechanism for transmitting the rotational driving force of the quick feeding shaft to the pattern wheel shaft.

REFERENCES:
patent: 3832961 (1974-09-01), Nakamura
patent: 3908568 (1975-09-01), Fujii
patent: 4570555 (1986-02-01), Reinke
patent: 4727817 (1988-03-01), Sakuma

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