(under subclass 523) Device wherein the means to move the tool includes an electromechanical transducer in which reciprocatory or oscillatory motion between a coiled conductor carrying electric current and a ferrous or ironlike armature is effected by varying the instantaneous value of current in the conductor.
(1) Note. The definition of this subclass excludes an electric motor of the usual rotary-shaft type, unless it is
so connected in the tool drive that its shaft can only oscillate, without undergoing a full rotation.
SEE OR SEARCH CLASS
234, Selective Cutting (e.g., Punching),
108, for individually electrically driven tools in a selective cutting machine.
318, Electricity: Motive Power Systems, 119+, for reciprocating or oscillating motors, generally, and subclass 135, for linear-movement motors, generally.
