Variable speed drive

Claim 1

IN A VARIABLE SPEED DRIVE, THE COMBINATION COMPRISING: A REVERSIBLE ELECTRIC MOTOR HAVING A DRIVE SHAFT; TWO SPEED MOTOR REDUCTION MEANS HAVING AN INPUT SHAFT AND AN OUTPUT SHAFT INTERCONNECTED BY A PAIR OF POWER TRAINS THAT ARE ALTERNATELY SELECTABLE BY SECTION OF THE DIRECTION OF ROTATION OF SAID INPUT SHAFT, ONE OF SAID POWER TRAINS BEING ADAPTED TO ACCOMPLISH A GREATER REDUCTION IN SPEED OF THE OUTPUT SHAFT RELATIVE TO THE INPUT SHAFT THAN THE OTHER POWER TRAIN TO PROVIDE SELECTABLE LOW AND HIGH SPEED RANGES; A V-BELT DRIVE DRIVINGLY CONNECTING THE MOTOR DRIVE SHAFT AND THE INPUT SHAFT ON SAID MOTOR REDUCTION MEANS AND COMPRISING DRIVER AND DRIVEN VARIABLE DIAMETER PULLEYS EACH HAVING A PAIR OF BELT ENGAGING FLANGES, ONE OF SAID PULLEYS BEING MOUNTED ON SAID MOTOR DRIVE SHAFT AND THE OTHER OF SAID PULLEYS BEING MOUNTED ON SAID INPUT SHAFT, AND A V-BELT DRIVINGLY ENGAGED ABOUT SAID PULLEYS, SAID DRIVEN PULLEY BEING ADJUSTABLE RELATIVE TO SAID DRIVER PULLEY TO ACCOMMODATE CHANGES IN THE EFFECTIVE BELT DIAMETER OF THE DRIVER PULLEY; ACTUATOR MEANS FOR SAID DRIVER PULLEY ADAPTED TO VARY THE EFFECTIVE BELT DIAMETER OF SAID DRIVER PULLEY TO THEREBY VARY THE SPEED OF SAID INPUT SHAFT RELATIVE TO SAID MOTOR DRIVE SHAFT; MEANS FOR SELECTIVELY REVERSING THE DIRECTION OF ROTATION OF SAID MOTOR AND THEREBY THE DIRECTION OF ROTATION OF THE INPUT SHAFT OF SAID MOTOR REDUCTION MEANS TO ALTERNATLEY SELECT THE LOW AND HIGH SPEED RANGES; AND CONTROL MEANS FOR SAID ACTUATOR MEANS TO CONTROL THE EFFECTIVE BELT DIAMETER OF SAID DRIVER PULLEY TO THEREBY CONTROL THE SPEED OF OUTPUT SHAFT OF SAID MOTOR REDUCTION MEANS RELATIVE TO THE SPEED OF SAID MOTOR DRIVE SHAFT WITHIN EACH SPEED RANGE.