One-step buttonholer with hall effect sensor

Details One-step buttonholer with hall effect sensor One-step buttonholer with hall effect sensor

1979-04-16

1980-11-11

Nerbun, Peter P.

Sewing

Work manipulating

Guides

112158E, D05B 306, D05B 302

Patent

active

042326176

ABSTRACT:
A sewing machine is disclosed having means for automatically sewing a buttonhole. A Hall Effect sensor switch interacts with a lever, which engages adjustable spots on a buttonhole gaging presser foot, to provide signals for electronic circuit logic indicating the end of a buttonhole being sewn.

REFERENCES:
patent: 3113537 (1963-12-01), Bono
patent: 3656443 (1972-04-01), Ross
patent: 4056070 (1977-11-01), Hauf
patent: 4161150 (1979-07-01), Brown

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