Thermostatically controlled multiple fuel burner

Claim 1

IN A HEATING SYSTEM INCLUDING A HEATER OF THE TYPE HAVING A BURNER HEAD ADAPTED TO RECEIVE LIQUID FUEL AND PRESSURIZED AIR AND TO PRODUCE A COMBUSTIBLE MIXTURE OF SUCH FUEL AND AIR, AN HERMETICALLY SEALED BOWL PROVIDING A CLOSED CHAMBER ADAPTED TO BE PRESSURIZED FOR RECEIVING LIQUID FUEL SUPPLIED THERETO AND INCLUDING MEANS CONTROLLING THE FUEL SUPPLY AUTOMATICALLY TO MAINTAIN A SUBSTANTIALLY CONSTANT LEVEL OF FUEL IN THE BOWL CHAMBER, MEANS CONNECTED TO THE BOWL AND ADAPTED TO SUPPLY AIR UNDER PRESSURE TO THE BOWL CHAMBER, MEANS CONNECTING THE BOWL CHAMBER TO THE BURNED HEAD FOR FEEDING FUEL TO THE LATTER UNDER THE INFLUENCE OF FLUID PRESSURE IN THE BOWL CHAMBER, THERMOSTATIC VALVE MEANS IN AND CONTROLLING THE FLOW OF AIR THROUGH SAID CONNECTION BETWEEN THE AIR SUPPLY MEANS AND THE BOWL CHAMBER, SAID VALVE MEANS BEING RESPONSIVE TO THE TEMPERATURE OF THE HEATER AUTOMATICALLY TO INCREASE THE PRESSURE OF SUPPLIED AIR UPON A DECREASE IN SUCH TEMPERATURE AND TO DECREASE SUCH PRESSURE UPON AN INCREASE IN SUCH TEMPERATURE, AND FIXED FLOW RESTRICTOR MEANS VENTING THE BOWL CHAMBER WHEREBY THE AIR PRESSURE IN THE BOWL CHAMBER IS INCREASED AUTOMATICALLY UPON AND IN RESPONSE TO DECREASE IN HEATER TEMPERATURE TO THEREBY INCREASE THE RATE OF FUEL FEED TO THE BURNER HEAD AND SUCH BOWL CHAMBER AIR PRESSURE IS AUTOMATICALLY DECREASED UPON HEATER TEMPERATURE INCREASE TO THEREBY DECREASE THE FUEL FEED RATE TO SUCH HEAD.