Electric motor brush assembly adaptable to different stators

An electric motor comprising:

• a switch (93) having contact (a, b, c);
• a power cable having a first and a second conductor (96, 97);
• a commutator;
• a stator including a stator core, a first and a second field coil (65L, 65R), a first and a second brake coil (64L, 64R), and a terminal board mounted on one end face of said stator core, said terminal board having a first and a second terminal (58, 51) for connection to ends of said first field coil (65L), a third and fourth terminal (55, 54) for connection to ends of said second field coil (65R), a fifth and a sixth terminal (56, 53) for connection to said second brake coil (64R), and a seventh and an eighth terminal (57, 52) for connection to said first brake coil (64L);
• and
• a brush assembly including
• a pair of brushes (16A, 16B) each disposed in operative relation to said commutator,
• a pair of brush holders each supporting at least one of said brushes, and
• an assembly base for securing said brush holders thereto, said assembly base including a base plate of insulating material and a plurality of conductive passages secured to said base plate, said plurality of conductive passages comprising a first conductive passage connecting said second conductor (97) to said first terminal (58), a second conductive passage connecting said second terminal (51) to said third terminal (55), a third conductive passage connecting said fourth terminal (54) to said fifth terminal (56), a fourth conductive passage connecting said sixth terminal (53) to said seventh terminal (57), a fifth conductive passage connecting said eighth terminal (52) to said contact (b) of said switch (93) in its inoperative position, a sixth conductive passage connecting said first conductor (96) to one of said brushes (16A, 16B) through said switch (93), and a seventh conductive passage connecting the other of said brushes (16A, 16B) to said fourth terminal (54);
• whereby electrical connection of said stator is effected on only one end of said stator.