Oil space heaters utilizing pot type burners

Claim 1

AN OIL SPACE HEATER COMPRISING A POT BURNER, MEANS IN THE BURNER FOR IGNITING FUEL OIL SUPPLIED TO THE BURNER, A FUEL OIL MAIN RESERVOIR, AN AUXILIARY FUEL OIL RESERVOIR POSITIONED WITHIN THE MAIN RESERVOIR, A FIRST MEASURING CONVEYOR-ELEVATOR WITHIN THE MAIN RESERVOIR, A FIRST OUTLET MEANS AT THE TOP REGION OF THE MAIN RESERVOIR FOR RECEIVING FUEL CONVEYED BY THE FIRST CONVEYORELEVATOR, A SECOND CONVEYOR-ELEVATOR WITHIN THE AUXILIARY RESERVOIR, THE TRANSPORTATION CAPACITY OF THE SECOND CONVEYOR-ELEVATOR BEING IN EXCESS OF THAT OF THE FIRST CONVEYOR-ELEVATOR, A SECOND FUEL OUTLET MEANS AT THE TOP OF THE AUXILIARY RESERVOIR; A STANDPIPE WITHIN THE AUXILIARY RESERVOIR, THE FIRST FUEL OUTLET MEANS OPENING INTO THE STANDPIPE, THE SECOND FUEL OUTLET MEANS OPENING INTO THE MAIN RESERVIOR, EACH OUTLET MEANS BEING INCLINED TO CAUSE FUEL WITHIN THE OUTLET MEANS TO FLOW THEREFROM BY GRAVITY, A FUEL FEED ARRANGEMENT FROM A LOWER REGION OF THE STANDPIPE TO THE BURNER, FIRST DRAINAGE MEANS CONNECTED TO THE STANDPIPE FOR NORMALLY MAINTAINING THE LEVEL OF FUEL OIL IN THE STANDPIPE, THE BURNER AND THE FEED ARRANGEMENT AT A PREDETERMINED LEVEL BELOW THE FUEL IGNITION MEANS AND FOR SPILLING ANY EXCESS FUEL THEREIN BACK INTO THE AUXILIARY RESERVOIR, AND SECOND DRAINAGE MEANS CONNECTED TO THE STANDPIPE WHICH ARE CLOSED DURING OPERATION OF THE BURNER AND OPENED ON EXTINCTION OF THE BURNER INSTANTANEOUSLY BY GRAVITY TO DRAIN ALL FUEL OIL FROM THE BURNER, THE FEED ARRANGEMENT AND THE STANDPIPE BACK INTO THE AUXILIARY RESERVOIR.