Control mechanism for a driving unit consisting of a driving engine and an infinitely variable gear

Claim 1

IN A CONTROL MECHANISM FOR OPERATING A DRIVING UNIT COMPRISING A DRIVING ENGINE HAVING AN AUTOMATIC GOVERNOR WITH A MOVABLE CONTROL MEMBER FOR CONTROLLING THE OUTPUT OF SAID ENGINE, AND AN INFINITELY VARIABLE TRANSMISSION CONNECTED TO AND DRIVEN BY SAID ENGINE HAVING CYLINDER AND PISTON MEANS FOR VARYING THE TRANMISSION RATIO OF SAID TRANSMISSION, MEANS FOR NORMALLY MAINTAINING A CONSTANT TRANSMISSION RATIO COMPRISING A SOURCE OF FLUID PRESSURE MEDIUM, A LINE CONNECTING SAID SOURCE TO SAID CYLINDER AND PISTON MEANS, A PRESSURE-REGULATING VALVE IN SAID LINE FOR DETERMINING THE PRESSURE OF SAID MEDIUM SETTABLE CONTROL MEANS, A CONTROL MEMBER OPERATIVELY CONNECTED TO SAID VALVE AND CONNECTED TO SAID CYLINDER AND PISTON MEANS AND TO SAID CONTROL MEANS FOR MOVING SAID VALVE IN RESPONSE TO MOVEMENT OF SAID CYLINDER AND PISTON MEANS TO MAINTAIN THE SAME SUBSTANTIALLY CONSTANTLY IN A POSITION DETERMINED BY THE SETTING OF SAID CONTROL MEANS, AND A CONTROL ELEMENT COMPRISING A PRESSURE RELEASE VALVE CONNECTED TO SAID LINE OPERATIVELY CONNECTED TO SAID CONTROL MEMBER OF SAID GOAVERNOR OF SAID ENGINE TO BE ADJUSTED THEREBY WHEN SAID ENGINE HAS REACHED ITS NORMAL MAXIMUM OUTPUT FOR THEN REDUCING THE PRESSURE OF SAID MEDIUM ACTING UPON SAID CYLINDER AND PISTON MEANS TO SAID TRANSMISSION SO AS THEREBY TO REDUCE THE TRANSMISSION RATIO OF SAID TRANSMISSION.