Reversible hydraulic transmission with a self-changing transmission ratio

Claim 1

A REVERSIBLE HYDRAULIC TRANSMISSION ASSEMBLY WITH A SELF-CHANGING TRANSMISSION RATIO, COMPRISING A HYDRAULIC MOTOR, A VARIABLE DELIVERY PUMP FOR SUPPLYING A PRESSURE FLUID TO SAID HYDRAULIC MOTOR, A HAND-OPERABLE DISTRIBUTOR DEVICE FOR DIRECTING SAID PRESSURE FLUID TO SAID HYDRAULIC MOTOR SO THAT THE TRANSMISSION IS SELECTIVELY SETTABLE IN DRIVE, NEUTRAL OR REVERSE OPERATING STATE, PIPE CONNECTIONS FOR THE FLOW OF THE PRESSURE FLUID BETWEEN SAID HYDRAULIC MOTOR, SAID DISTRIBUTOR DEVICE AND SAID PUMP, A DOUBLE-ACTING CYLINDER ARRANGEMENT FOR DISPLACING A CONTROL MEMBER OF SAID PUMP WHEREBY THE RATE OF DELIVERY OF THE PUMP AND CONSEQUENTLY THE TRANSMISSION RATIO IS CHANGED, SAID CYLINDER ARRANGEMENT BEING OPERATED BY THE PRESSURE FLUID SUPPLIED BY THE PUMP WHEN SAID PUMP TENDS TO SPEED UP IN RESPECT TO THE HYDRAULIC MOTOR, AND BY THE PRESSURE FLUID RETURNED FROM SAID HYDRAULIC MOTOR TO SAID PUMP WHEN THE PUMP TENDS TO SLOW DOWN IN RESPECT TO SAID MOTOR SO THAT THE TRANSMISSION IS REVERSIBLE, THE TRANSMITTED MOTION REMAINING UNAFFECTED WHEN THE DRIVE FROM THE PUMP TO THE HYDRAULIC MOTOR SWITCHES FROM SAID MOTOR TO THE PUMP, A SECOND DISTRIBUTOR DEVICE OPERATED ALTERNATIVELY BY THE PRESSURE FLUID ISSUING FROM SAID PUMP, OR RETURNING TO THE PUMP FROM THE HYDRAULIC MOTOR FOR ADMITTING SAID PRESSURE FLUID TO SAID CYLINDER ARRANGEMENT AND FOR ADMITTING A SECOND PRESSURE FLUID TO SAID CYLINDER ARRANGEMENT IN OPPOSI-