Automatic control mechanism

Claim 1

IN A MULTIPLE SPEED POWER TRANSMISSION MECHANISM FOR DELIVERING POWER FROM A THROTTLE CONTROLLED VEHICLE ENGINE TO A DRIVEN MEMBER, SAID MECHANISM INCLUDING GEAR ELEMENTS FORMING A DRIVING POWER DELIVERY PATH AND MEANS FOR CONTROLLING THE RELATIVE MOTION OF SAID GEAR ELEMENTS TO PROVIDE A PLURALITY OF GEAR REDUCTION RATIOS; A CONTROL MECHANISM FOR ENERGIZING SAID MOTION CONTROLLING MEANS COMPRISING A FLUID PRESSURE SOURCE, CONDUIT STRUCTURE INTERCONNECTING SAID PRESSURE SOURCE AND SAID MOTION CONTROLLING MEANS, A SHIFT VALVE MEANS SITUATED IN AND PARTLY DEFINING SAID CONDUIT STRUCTURE, A PERSONALLY OPERABLE VALVE MEANS FOR PRODUCING AN ENGINE TORQUE DEMAND SENSITIVE PRESSURE, A PORTION OF SAID CONDUIT MEANS BEING ADAPTED TO CONDUCT SAID TORQUE DEMAND SENSITIVE PRESSURE TO SAID SHIFT VALVE MEANS TO ESTABLISH A BIASING FORCE FOR ACTUATING THE LATTER, AND A PRESSURE REGULATOR VALVE MEANS FOR REGULATING THE EFFECTIVE PRESSURE SUPPLIED TO SAID MOTION CONTROLLING MEANS BY SAID PRESSURE SOURCE IN PROPORTION TO ENGINE TORQUE DEMANDS, SAID LAST NAMED MEANS INCLUDING A PERSONALLY OPERABLE PORTION ADAPTED TO INITIATE CHANGES IN THE REGULATED PRESSURE LEVEL, A MOVABLE REGULATING VALVE ELEMENT, AND AN AUXILIARY FLUID FLOW PASSAGE INCLUDING A FLOW RESTRICTING ORIFICE, SAID PERSONALLY OPERABLE PORTION BEING IN FLUID COMMUNICATION WITH SAID AUXILIARY PASSAGE AND ADAPTED TO REGULATE THE RATE OF FLOW OF FLUID THROUGH SAID ORIFICE, SAID MOVABLE VALVE ELEMENT BEING SUBJECTED TO THE PRESSURE DIFFERENTIAL ACROSS SAID ORIFICE, SAID PERSONALLY OPERABLE VALVE MEANS AND SAID PERSONALLY OPERABLE PORTION OF SAID VALVE MEANS BEING CONNECTED TO THE ENGINE THROTTLE FOR SIMULTANEOUS MOVEMENT THEREWITH BY MEANS OF MOTION TRANSMITTING ELEMENTS CONNECTING A MOVABLE PORTION OF SAID PERSONALLY OPERABLE VALVE MEANS WITH THE ENGINE THROTTLE AND CONNECTING SAID PERSONALLY OPERABLE PORTION OF SAID REGULATOR VALVE MEANS WITH THE ENGINE THROTTLE, THE RATIO OF THE DISPLACEMENT BETWEEN THE ENGINE THROTTLE AND SAID MOVABLE PORTION OF SAID PERSONALLY OPERABLE VALVE MEANS BEING DIFFERENT THAN THE RATIO OF THE DISPLACEMENT BETWEEN THE ENGINE THROTTLE AND SAID PERSONALLY OPERABLE PORTION OF SAID REGULATOR VALVE MEANS FOR A GIVEN RANGE OF ENGINE THROTTLE SETTINGS, THE ACTUAL DISPLACEMENTS OF SAID MOVABLE PORTION OF SAID PERSONALLY OPERABLE VALVE MEANS AND SAID PERSONALLY OPERABLE PORTION OF SAID REGULATOR VALVE MEANS BEING RELATED TO THE MOVEMENT OF THE ENGINE THROTTLE BY SEPARATE, CONTINUOUS FUNCTIONAL RELATIONSHIPS.