Refrigerated chest

Claim 1

A STRUCTURE FOR CONTROLLING THE TEMPERATURE OF PERISHABLE FOODS, COMPRISING: A STRUCTURE HAVING WALL MEANS DEFINING FIRST AND SECOND, UPWARDLY OPENING RECEPTACLES IN SIDE-BY-SIDE ARRANGEMENT AND A COMPARTMENT BENEATH SAID RECEPTACLES, THE WALLS MEANS DEFINING SAID COMPARTMENT HAVING PERFORATIONS THROUGH WHICH AIR CAN FLOW INTO AND OUT OF SAID COMPARTMENT; CLOSURE MEANS ON SAID STRUCTURE FOR COVERING THE OPENINGS IN SAID RECEPTACLES; INSULATION MEANS SURROUNDING THE EXTERNAL SURFACES OF SAID RECEPTACLES AND FURTHER INSULATION MEANS DISPOSED WITHIN SAID CLOSURE MEANS; TWO SETS OF EVAPORATOR COILS ADJACENT PORTIONS OF THE OUTER SURFACES OF SAID RECEPTACLES, THE NUMBER OF COILS PER UNIT OF SURFACE BEING GREATER WITH THE SECOND RECEPTACLE THAN WITH THE FIRST RECEPTACLE; A MOTOR-DRIVEN COMPRESSOR FOR SUPPLYING COOLANT UNDER PRESSURE; A CONDENSER, SAID COMPRESSOR AND SAID CONDENSER BEING DISPOSED WITHIN SAID COMPARTMENT; OUTPUT CONDUIT MEANS CONNECTING SAID CONDENSER IN SERIES WITH SAID COMPRESSOR, A PAIR OF PRESSURE SENSITIVE, EXPANSION VALVES AND CONDUITS CONNECTING EACH OF SAID VALVES BETWEEN SAID CONDENSER AND ONE OF SAID SETS OF COILS, WHEREBY THE FLOW OF COOLANT FROM SAID SOURCE