repulsion-motor

from The Century Dictionary.

• noun An alternating-current motor, for use on single-phase circuits, in which the stationary field is similar to that of a single-phase induction-motor and the armature is like that of an ordinary direct-current machine with commutator and brushes. The armature is short-circuited through the brushes and, after starting, the motor is commonly converted automatically into a single-phase induction-motor by some mechanical device that connects all the commutator-bars together.