Electric drive with a universal and induction motor combined on a common lamination stack

In an electric two motor drive including means for separately connecting each motor to a single phase AC line service as the only supply source comprising a stator winding of a commutator motor having a lower pole number and a stator winding of an induction motor having a higher pole number arranged in the common stator lamination stack, and a common armature which forms short circuits to give a number of poles corresponding to a higher pole number of the exciting induction motor stator field from series connected coils in each phase winding and a segmented commutator, the segments of which form circuits with a number of poles corresponding to the lower pole number of the exciting commutator stator field the improvement comprising a common single armature winding system provided for the commutator as well as the induction motor operation, said winding having an uncrossed lap winding and a crossed lap winding connected to the same segments of the commutator, the coil span of said windings corresponding respectively at least approximately to one pole pitch of the lower pole number commutator stator winding and to an uneven integral multiple of the pole pitch of the higher pole number induction stator winding.