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Claim 1

IN A TRANSMISSION MECHANISM FOR AN AUTOMOTIVE VEHICLE HAVING AN ENGINE AND A THROTTLE AND THROTTLE ACTUATOR FOR CONTROLLING THE ENGINE, A DRIVE SHAFT, A DRIVEN SHAFT, MEANS INCLUDING A FIRST FLUID PRESSURE ACTUATED SERVOMOTOR FOR COMPLETING A LOW SPEED POWER TRAIN BETWEEN SAID SHAFTS, MEANS INCLUDING A SECOND PRESSURE ACTUATED SERVOMOTOR FOR COMPLETING A HIGH SPEED POWER TRAIN BETWEEN SAID SHAFTS, A SOURCE OF FLUID PRESSURE, A SHIFT VALVE CONNECTED TO SAID SOURCE AND OPERABLE TO DIRECT FLUID FROM SAID SOURCE TO SAID SERVOMOTORS FOR COMPLETING THE POWER TRAINS, SAID SHIFT VALVE HAVING A DOWNSHIFTED POSITION IN WHICH SAID LOW SPEED POWER TRAIN IS COMPLETED AND UPSHIFTED POSITION IN WHICH SAID HIGH SPEED POWER TRAIN IS COMPLETED, A GOVERNOR VALVE CONNECTED TO SAID DRIVEN SHAFT AND TO SAID SOURCE AND ADAPTED TO SUPPLY A GOVERNOR FLUID PRESSURE THAT VARIES WITH DRIVEN SHAFT SPEED, A FIRST VALVE CONNECTED BETWEEN SAID SOURCE OF PRESSURE AND SAID SERVOMOTOR FOR SAID LOW SPEED POWER TRAIN, SAID FIRST VALVE BEING CONNECTED TO SAID GOVERNOR FLUID PRESSURE, SAID FIRST VALVE BEING OPERABLE TO REGULATE THE FLUID PRESSURE BEING SUPPLIED TO SAID LOW SPEED POWER TRAIN SERVOMOTOR IN ACCORDANCE WITH THE SPEED OF THE DRIVEN SHAFT TO PROVIDE FOR A SMOOTH SHIFT FROM SAID HIGH SPEED DRIVE TRAIN TO SAID LOW SPEED DRIVE TRAIN.