Buttonhole presser device for sewing machines

Details Buttonhole presser device for sewing machines Buttonhole presser device for sewing machines

1982-08-25

1983-10-18

Schroeder, Werner H.

Sewing

Work manipulating

Guides

112158E, D05B 308

Patent

active

044099134

ABSTRACT:
A buttonhole presser device includes electrical switch contact members which cooperate with adjustable contact closing members to close an electrical circuit path. The switch contact members are carried by the shank of the presser device and are arranged so that when the presser device is installed on the presser bar one of the switch contact members is in electrical contact with the presser bar and the other switch contact member is in electrical contact with a conductor. The presser bar and the conductor are electrically connected to an electrical control circuit within the sewing machine.

REFERENCES:
patent: 4182249 (1980-01-01), Matumura et al.
patent: 4216732 (1980-08-01), Marsh et al.
patent: 4232617 (1980-11-01), Garron

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