hermann

Claim 1

IN COMBINATION WITH A TRANSMISSION HAVING SHIFTABLE GEARS, HYDRAULIC MOTOR MEANS CONNECTED TO SAID GEARS TO EFFECT THE SHIFTING THEREOF, VALVE MEANS IN CIRCUIT WITH SAID HYDRAULIC MOTOR MEANS TO CONTROL THE MOVEMENT THEREOF, A SHAFT OPERATIVELY CONNECTED TO SAID VALVE MEMBER ROTATABLE FOR SHIFTING THE VALVE MEMBER, A ROTARY SERVO-MOTOR HAVING ITS OUTPUT SIDE CONNECTED TO SAID SHAFT, AND ACTUATOR MEANS FOR ADJUSTING THE INPUT SIDE OF SAID SERVO-MOTOR COMPRISING, A FRAME, SAID FRAME DEFINING A CHANNEL, A PLURALITY OF CAMS IN SERIAL RELATION IN THE CHANNEL HAVING FREEDOM TO ROTATE IN THE CHANNEL AN TO MOVE IN THE DIRECTION OF THE LENGTH OF THE CHANNEL, EACH CAM HAVING A LARGER DIAMETER AND A SMALLER DIAMETER, A STATIONARY FIRST BEARING BLOCK IN THE FRAME AT ONE END OF THE CHANNEL ON WHICH THE CAM AT ONE END OF THE SERIES OF CAMS RESTS, A MOVABLE SECOND BEARING BLOCK MOVABLY GUIDED IN THE FRAME SPACED ALONG THE CHANNEL FROM SAID FIRST BEARING BLOCK AND ENGAGED BY THE CAM AT THE OTHER END OF SAID SERIES OF CAMS, A ROTARY ACTUATOR FOR EACH CAM MOUNTED ON THE FRAME, A FLEXIBLE DRIVE CONNECTION FROM EACH ACTUATOR TO ITS RESPECTIVE CAM, EACH ACTUATOR BEING OPERABLE WHEN ENERGIZED TO ROTATE ITS RESPECTIVE CAM TO POSITION THE LARGER DIAMETER THEREOF IN THE DIRECTION OF THE LENGTH OF SAID CHANNEL AND WHEN DE-ENERGIZED TO ROTATE THE RESPECTIVE CAM TO POSITION THE SMALLER DIAMETER THEREOF IN THE DIRECTION OF THE LENGTH OF THE CHANNEL, AND MEANS FOR SELECTIVELY ENERGIZING SAID ACTUATORS, SAID SECOND BEARING BLOCK BEING OPERATIVELY CONNECTED WITH THE INPUT SIDE OF SAID SERVO-MOTOR.