Center biased electric switch for a reversible d.c. motor

Claim 1

SWITCH MEANS COMPRISING A SWITCH ASSEMBLY INCLUDING A TERMINAL BOARD, TERMINAL MEANS INCLUDING FEED TERMINALS, ARM TERMINALS AND GROUND TERMINALS, AFFIXED TO SAID TERMINAL BOARD, A CASING DEFINED BY A PAIR OF INTERENGAGING CASING PARTS HAVING MEANS THEREIN FOR SUPPORTING AND POSITIONING SAID TERMINAL BOARD, THERE BEING A CAVITY DEFINED WITHIN SAID CASING, YOKE MEANS SUPPORTED ING SAID CAVITY, A PAIR OF CONTACTOR MEANS WITHIN SAID CASING MOVABLY SUPPORTED ON SAID YOKE MEANS, SAID CONTACTOR MEANS EACH INCLUDING A PLANAR PART AND AN OFFSET PART JOINED BY AN INTERMEDIATE PART HAVING RAMP MEANS THEREON, SAID CONTACTOR MEANS BEING IN SIDE-BY-SIDE RELATIONSHIP BUT ORIENTED IN OPPOSITE DIRECTIONS, COOPERATING MEANS ON SAID YOKE MEANS AND EACH OF SAID CONTACTOR MEANS FOR PERMITTING PIVOTING OF ONE CONTACTOR MEANS INTO ENGAGEMENT WITH A FEED TERMINAL AT A TIME, AND ACTUATING MEANS INCLUDING A PLUNGER ENGAGED WITH EACH CONTACTOR MEANS FOR MOVING ONE CONTACTOR MEANS AT A TIME BETWEEN A POSITION ENGAGING ITS ASSOCIATED GROUND TERMINAL TO A POSITION ENGAGING AN ASSOCIATED FEED TERMINAL.