Heater control system

Claim 1

BURNER CONTROL APPARATUS IN COMBINATION WITH A FUEL BURNER HAVING AN ELECTRICALLY ENERGIZABLE BLOWER MOTOR AND FUEL VALVE COMPRISING: TEMPERATURE SENSITIVE CONTROL MEANS INCLUDING A SOURCE OF ELECTRICAL ENERGY, A FIRST RELAY INCLUDING A WINDING HAVE FIRST AND SECOND ENDS, AND A FIRST CONTACT SET, MEANS FOR CONNECTING SAID SOURCE OF ELECTRICAL ENERGY TO SAID CONTACT SET, A SECOND RELAY INCLUDING A WINDING AND A CONTACT SET, MEANS FOR CONNECTING THE CONTACT SET OF SAID FIRST RELAY TO THE WINDING OF SAID SECOND RELAY, MEANS FOR CONNECTING SAID SOURCE OF ELECTRICAL ENERGY TO SAID BLOWER MOTOR AND FUEL VALVE VIA THE CONTACT SET OF SAID SECOND RELAY WHEN SAID SECOND RELAY IS ENERGIZED, A DIRECT CURRENT SOURCE INCLUDING FIRST AND SECOND OUTPUT TERMINALS, A THERMISTOR INCLUDING FIRST AND SECOND ENDS, MEANS FOR CONNECTING THE FIRST END OF SAID THEREMISTOR TO ONE END OF THE WINDING OF SAID FIRST RELAY, MEANS FOR CONNECTING THE SECOND END OF SAID THESMISTOR TO THE FIRST TERMINAL OF SAID DIRECT-CURRENT SOURCE, AND CIRCUIT BREAKER MEANS FOR CONNECTING THE OTHER END OF THE WINDING OF SAID FIRST RELAY TO THE SECOND TERMINAL OF SAID DIRECT-CURRENT SOURCE, SAID CIRCUIT BREAKER MEANS DISCONNECTING THE WINDING OF SAID FIRST RELAY FROM SAID DIRECTCURRENT SOURCE WHEN THE CURRENT THROUGH SAID CIRCUIT BNREAKER MEANS EXCEEDS A GIVEN VALUE.