Delayed step opening gas regulator

Claim 1

A CONTROL FOR THE IGNITION, REGULATION, AND EXTINCTION OF GAS BURNERS, COMPRISING IN COMBINATION, A CONTROL VALVE, A BODY HAVING AN INLET PASSAGE ADAPTED FOR CONNECTION TO A SOURCE OF GAS SUPPLY AND AN OUTLET PASSAGE ADAPTED FOR CONNECTION TO A BURNER THROUGH SAID CONTROL VALVE, A MAIN CONTROL PORT BETWEEN SAID INLET AND OUTLET PASSAGES FOR PASSING A REGULATABLE AND RELATIVELY LARGE FLOW OF GAS, A BYPASS BETWEEN SAID INLET AND OUTLET PASSAGES FOR PASSING A SMALLER FLOW OF GAS WHICH IS SUFFICIENT TO PROVIDE CONTINUOUS COMBUSTION AT A BURNER A VALVE FOR CLOSING SAID MAIN CONTROL PORT, MEANS FOR SUPPORTING AND OPERATING SAID VALVE TO OBTAIN A RAPID CLOSING IN RESPONSE TO THE APPROACH OF GAS PRESSURE IN THE SAID OUTLET PASSAGE TO THE GAS PRESSURE IN SAID INLET PASSAGE AND TO OBTAIN AN OPENING OF SAID PORT, WHICH IS SLOWER THAN SAID RAPID CLOSING, PRECEDED BY A DELAY IN COMMENCING SAID OPENING OF SAID PORT IN RESPONSE TO A DROP IN OUTLET PASSAGE PRESSURE RELATIVE TO INLET PASSAGE PRESSURE.