Control apparatus for gas burners

Claim 1

A FUEL VALVE COMPRISING: A BODY HAVING A PASSAGE THERETHROUGH; SAFETY VALVE MEANS INCLUDING A VALVE CLOSURE MEMBER IN SAID PASSAGE AND FLAME RESPONSIVE MEANS TO HOLD SAID CLOSURE MEMBER OPEN WHEN IT IS OTHERWISE OPENED; A ROTARY VALVE MEMBER IN SAID PASSAGE IN SERIES WITH SAID SAFETY VALVE CLOSURE MEMBER AND ROTATABLE BETWEEN "OFF" "PILOT" AND "ON" POSITIONS; A MANUAL CONTROL KNOB FOR ROTATING SAID ROTARY VALVE AND FOR MANUALLY OPENING SAID SEFETY VALVE CLOSURE MEMBER; PROGRAMMING MEANS BETWEEN SAID VALVE BODY AND SAID KNOB AND INCLUDING A PROGRAMMING GUIDE ON ONE AND A COOPERATING SLOT ON THE OTHER, SAID PROGRAMMING MEANS RENDERING SAID KNOB ROTATABLE FROM SAID "OFF" POSITION TOWARD SAID "PILOT" POSITION ONLY UPON SAID KNOB BEING DEPRESSED A PREDETERMINED DISTANCE WITH RESPECT TO SAID BODY, PERMITTING FURTHER DEPRESSION OF SAID KNOB TO ACCOMPLISH MANUAL OPENING OF SAID SAFETY VALVE CLOSURE MEMBER ONLY WHEN SAID KNOB IS IN SAID "PILOT" POSITION, AND PERMITTING ROTATION OF SAID KNOB FROM SAID "PILOT" POSITION TO SAID "ON" POSITION ONLY WHEN SAID KNOB IS RETRACTED FROM SAID BODY A PREDETERMINED DISTANCE; A VALVE STEM NONROTATABLY CONNECTED TO SAID ROTARY VALVE MEMBER BUT AXIALLY MOVABLE WITH RESPECT THERETO AND OPERABLY CONNECTED TO SAID SAFETY VALVE CLOSURE MEMBER; CONNECTING MEANS BETWEEN SAID KNOB AND SAID VALVE STEM AND INCLUDING A T-SHAPED CONNECTING SLOT ON ONE OF SAID KNOB OR STEM, THE SLOT INCLUDING A VERTICAL PORTION HAVING AN UPPER PORTION AND A LOWER PORTION AND INTERSECTED SUBSTANTIALLY AT ITS VERTICAL CENTER BY A HORIZONTAL SLOT WHICH EXTENDS IN ONE DIRECTION FROM SAID VERTICL SLOT; AND A CONNECTING PIN RIGIDLY CONNECTED TO THE OTHER OF SAID KNOB OR STEM AND DISPOSED IN SAID SLOT, SAID CONNECTING PIN AND SLOT AND SAID PROGRAMMING SLOT AND GUIDE BEING SO ARRANGED THAT WHEN SAID SAFETY VALVE IS CLOSED, DEPRESS-