Automatic liquid meter

Claim 1

AN ASSEMBLAGE FOR AUTOMATICALLY DETERMINING THE FUEL CONSUMPTION OF INTERNAL COMBUSTION ENGINES, HEATING PLANTS AND THE LIKE, COMPRISING A COMPENSATING CHAMBER FOR THE FUEL TO BE MEASURED AND HAVING A VOLUME OF AIR THEREIN, SAID CHAMBER HAVING AN OUTLET, MAGNETICALLY CONTROLLED VALVE MEANS FOR OPENING AND CLOSING SAID OUTLET, A MEASURING CYLINDER BELOW AND IN COMMUNICATION WITH SAID OUTLET, AN OUTLET CONDUIT FOR SAID MEASURING CYLINDER, SAID COMPENSATING CHAMBER AND MEASURING CYLINDER BEING LOCATED IN A FUEL LINE BETWEEN A FUEL SOURCE AND POINT OF UTILIZATION, SAID VALVE MEANS INCLUDING A HOLLOW STEM PROVIDING COMMUNICATION BETWEEN THE UPPER PORTION OF THE COMPENSATING CHAMBER AND THE MEASURING CYLINDER WHEREBY THE VOLUME OF AIR OF THE COMPENSATING CHAMBER IS GREATER THAN THAT OF THE MEASURING CYLINDER, A PHOTO HEAD FOR SAID OUTLET CONDUIT INCLUDING TWO OPPOSITELY DISPOSED TUBULAR ARMS, A PHOTO CELL IN ONE ARM, A LIGHT SOURCE IN THE OTHER ARM, MEANS MOUNTING SAID ARMS AT A SHARP ANGLE SYMMETRICALLY WITH RESPECT TO THE MID-AXIS OF THE MEASURING CYLINDER AND THE DIRECTION OF FLOW OF THE FUEL TO BE MEASURED, ELECTRICAL CIRCUITS FOR SAID LIGHT SOURCE AND SAID MAGNETICALLY CONTROLLED VALVE MEANS, A STOP WATCH PROVIDED WITH AN OPERATING KEY AND AN ELECTRICAL CIRCUIT FOR SAID PHOTO CELL LEADING TO SAID STOP WATCH FOR CONTROLLING CURRENT TO SAID