Electronic sewing machine with a feed control device

Details Electronic sewing machine with a feed control device Electronic sewing machine with a feed control device

1979-06-11

1981-07-07

Nerbun, Peter P.

Sewing

Stitch forming

Feeding work material

11212111, 112158E, D05B 2722

Patent

active

042768403

ABSTRACT:
A sewing machine which utilizes a pulse motor to vary feed rate in steps is equipped with a microcomputer that causes the pulse motor to operate in a repeated sequence in which two adjacent feed rates are alternated. By operating the computer in accordance with a manually-operable control, an overall feed rate can be produced which is intermediate the two adjacent feed rates.

REFERENCES:
patent: 4059746 (1977-11-01), Haga
patent: 4145643 (1979-03-01), Maeda et al.
patent: 4145982 (1979-03-01), Kume et al.
patent: 4167912 (1979-09-01), Sedlatschek et al.
patent: 4191120 (1980-03-01), Bergvall

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