Control system for gas burners

Claim 1

A CONTROL SYSTEM FOR A GAS BURNER COMPRISING: A PILOT BURNER; A MAIN BURNER; CONDUIT MEANS FOR SUPPLYING GAS TO SAID PILOT BURNER AND SAID MAIN BURNER, SAID MAIN BURNER BEING LOCATED DOWNSTREAM OF SAID PILOT BURNER; A NORMALLY CLOSED SOLENOID PILOT BURNER VALVE LOCATED UPSTREAM OF SAID PILOT BURNER, A NORMALLY CLOSED SOLENOID MAIN BURNER VALVE LOCATED BETWEEN SAID PILOT BURNER AND SAID MAIN BURNER WHEREBY SAID PILOT BURNER VALVE MUST BE OPEN FOR GAS TO FLOW TO SAID PILOT BURNER AND WHEREBY BOTH SAID VALVES MUST BE OPEN FOR GAS TO FLOW TO SAID MAIN BURNER; A MANUALLY OPERABLE SWITCH HAVING A NORMALLY OPEN CONTACT AND A NORMALLY CLOSED CONTACT; AN IGNITER FOR SAID PILOT BURNER IN SERIES WITH SAID NORMALLY OPEN CONTACT, A FLAME DETECTOR SWITCH HAVING HOT AND COLD CONTACTS, AND MEANS TO CLOSE SAID HOT CONTACT WHEN SAID PILOT BURNER IS IGNITED AND TO CLOSE SAID COLD CONTACT WHEN SAID PILOT BURNER IS OUT, A FIRST ELECTRICAL CIRCUIT SERIES CONNECTING A POWER SOURCE, SAID PILOT VALVE SOLENOID, SAID COLD CONTACT AND SAID NORMALLY OPEN CONTACT, A SECOND ELECTRICAL CIRCUIT SERIES-CONNECTING SAID POWER SOURCE, SAID PILOT VALVE SOLENOID, SAID HOT CONTACT AND BYPASSING SAID MANUALLY OPERABLE SWITCH AND A THIRD ELECTRICAL CIRCUIT SERIES-CONNECTING SAID MAIN BURNER SOLENOID, SAID NORMALLY CLOSED CONTACT AND SAID POWER SOURCE WHEREBY WHEN SAID MANUALLY OPERABLE SWITCH IS MOVED TO CLOSE SAID NORMALLY OPEN CONTACT, SAID PILOT BURNER VALVE WILL BE OPENED, SAID MAIN BURNER VALVE WILL BE CLOSED, SAID IGNITER WILL BE IN OPERATION, SAID FLAME SWITCH BEING OPERABLE TO MAINTAIN SAID PILOT BURNER VALVE OPEN AFTER SAID BURNER IS IGNITED BY COMPLETING SAID SECOND CIRCUIT THROUGH SAID HOT CONTACT, SAID MAIN BURNER VALVE BEING OPENED WHEN SAID MANUALLY OPERABLE SWITCH IS RELEASED TO CLOSE SAID NORMALLY CLOSED CONTACT, SAID FLAME DETECTOR SWITCH BEING OPERATIVE TO BREAK SAID SECOND CIRCUIT AND CLOSE SAID PILOT BURNER VALVE UPON OUTAGE OF SAID PILOT BURNER TO THEREBY DISCONTINUE THE FLOW OF GAS TO BOTH BURNERS.