Sewing – Elements – Starting or stopping
Patent
1977-12-21
1981-04-14
Schroeder, Werner H.
Sewing
Elements
Starting or stopping
112220, D05B 6910, D05B 6914
Patent
active
042612730
ABSTRACT:
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.
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Matthey Jacques
Torre Marcel
Falik Andrew M.
Groff, Jr. Emory L.
Mefina S.A.
Schroeder Werner H.
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