Variable speed drive mechanism

Claim 1

A WHEELED VEHICLE WITH VARIABLE SPEED DRIVE MECHANISM COMPRISING: (A) A VERTICALLY DISPOSED FRAME SUPPORTED AT OPPOSITE SIDES THEREOF BY A PAIR OF WHEELS; (B) YOKE MEANS HAVING VERTICALLY EXTENDING, ELONGATED OPENINGS THEREIN FIXED ON OPPOSITE SIDES OF SAID FRAME AND DISPOSED WITH SAID OPENINGS IN ALIGNMENT; (C) MOTOR MEANS FLOATINGLY MOUNTED IN SAID ELONGATED OPENINGS IN SAID YOKE MEANS FOR LIMITED LATERAL AND VERTICAL MOVEMENT THEREIN; (D) MEANS FOR LIMITING SAID LATERAL MOVEMENT OF SAID MOTOR MEANS IN SAID YOKE MEANS IN EACH DIRECTION; (E) RESILIENT MEANS MOVING SAID MOTOR MEANS LATERALLY OF SAID YOKE MEANS TO THE LIMIT OF MOVEMENT THEREOF IN ONE DIRECTION, (F) SAID MOTOR MEANS BEING DISPOSED IN LOWERMOST POSITION WITH RESPECT TO SAID YOKE MEANS WHEN MOVED TO THE LIMIT OF MOVEMENT IN SAID ONE DIRECTION; (G) CONE PULLEY MEANS CONNECTED FOR MOVEMENT WITH AND DRIVEN BY SAID MOTOR MEANS AND DISPOSED ABOVE AND CONTIGUOUS TO SAID PAIR OF WHEELS, (H) THE SMALL END OF SAID CONE PULLEY MEANS BEING DISPOSED ADJACENT THE PERIPHERY OF SAID PAIR OF WHEELS WHEN SAID MOTOR MEANS IS MOVED TO THE LIMIT OF MOVEMENT IN SAID ONE DIRECTION; AND (I) MEANS FOR MOVING SAID MOTOR MEANS IN THE OTHER DIRECTION IN SAID YOKE MEANS TO BRING SAID CONE PULLEY MEANS ADJACENT SAID SMALL END THEREOF INTO DRIVING CONTACT WITH SAID PAIR OF WHEELS FOR DRIVING SAID PAIR OF WHEELS IN THE SAME DIRECTION.