Air conditioning apparatus having volume and temperature control

Claim 1

IN AN AIR CONDITIONING APPARATUS, A MIXING CHAMBER HAVING AN OUTLET PASSAGE ADAPTED TO BE CONNECTED TO A SPACE TO BE AIR CONDITIONED AND A PAIR OF INLET CONDUITS, HOT AND COLD SUPPLY CONDUITS CONNECTED TO SAID INLET CONDUITS AND ADAPTED TO CONTAIN HOT AND COLD TEMPERED AIR FOR SUPPLYING TEMPERED AIR TO SAID MIXING CHAMBER AND TO THE SPACE TO BE AIR CONDITIONED, A PIVOTED DAMPER BLADE POSITIONED IN EACH OF SAID INLET CONDUITS HAVING AN ACTUATING ARM, SPRING MEANS CONNECTED TO THE ACTUATING ARM OF EACH DAMPER BLADE, SAID BLADES FORMING WITH SAID SPRING MEANS A FLOW REGULATING VALVE MEANS WITH RESPECT TO EACH OF SAID INLET CONDUITS TO CONTROL THE FLOW OF HOT AND COLD AIR THERETHROUGH A PIVOTED LEVER, CONNECTED TO THE ENDS OF SAID SPRING MEANS REMOTE FROM SAID BLADES, SAID LEVER WHEN MOVED ON ITS PIVOT CAUSING PIVOTING OF SAID DAMPER BLADES DIFFERENTIALLY THROUGH SAID SPRING MEANS TO DIFFERENTIALLY VARY THE FLOW OF AIR THROUGH SAID INLET CONDUITS, MOTOR MEANS CONNECTED TO SAID LAST NAMED PIVOTED LEVER TO MOVE SAID DAMPER BLADES, THERMOSTAT MEANS ADAPTED TO BE RESPONSIVE TO THE TEMPERATURE OF THE SPACE TO BE AIR CONDITIONED CONNECTED TO AND CONTROLLING THE OPERATION OF SAID MOTOR MEANS, AND A MANUALLY ADJUSTABLE LINKAGE MEANS CONNECTED BETWEEN SAID PIVOTED LEVER AND AT LEAST ONE OF SAID SPRING MEANS TO VARY THE TENSION ON SAID SPRINGS FOR ADJUSTING THE BIAS OF THE SPRING MEANS ACTING ON THE DAMPER BLADES IN SAID INLET CONDUITS TO BALANCE THE FLOW THROUGH SAID INLET CONDUITS FOR A PREDETERMINED SETTING OF SAID THERMOSTAT MEANS.