Device for controlling the motor of an electric sewing machine

Details Device for controlling the motor of an electric sewing machine Device for controlling the motor of an electric sewing machine

D - Textiles, Paper

05

B

342/35

D05B 69/10 (2006.01) D05B 69/18 (2006.01)

Patent

CA 1097778

ABSTRACT OF THE DISCLOSURE: A motor controller for an electric sewing machine mounted in a removable portion of the housing of the machine. The controller is actuatable by a pneumatic switch which successively closes a plurality of contacts as the air pressure to the switch is increased to enable the speed of the motor to be increased smoothly and gradually without sparking at the contacts.

293582

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