Analyzer for determining concentration of combustibles in gases

Claim 1

A COMBUSTION ANALYZER FOR GASES CONTAINING INSUFFICIENT OXYGEN TO SUPPORT COMBUSTION OF COMBUSTIBLES IN THE GASES COMPRISING A GAS FLOW SYSTEM HAVING SEPARATE GAS AND OXYGEN INLET MEANS AT ONE END AND AN OUTLET AT THE OTHER END, MEANS FOR PRODUCING A FLOW OF OXYGEN AND GAS TO BE ANALYZED INTO THE SYSTEM THROUGH SAID INLET MEANS, SAID FLOW SYSTEM ALSO INCLUDING A SINGLE MIXING LINE COMMUNICATING BOTH OF SAID INLET MEANS TO THE OUTLET AND THROUGH WHICH GAS AND OXYGEN ENTERING SAID INLET MEANS FLOW FOR INTERMIXING THEREOF AND A PAIR OF PARALLEL BRANCH LINES CONNECTING SAID MIXING LINE AND OUTLET, MEANS IN BRANCH LINE TO REMOVE THE COMBUSTIBLES FROM THE GAS-OXYGEN MIXTURE IN THAT LINE, A COMPARISON FILAMENT CELL IN SAID ONE LINE BEYOND SAID COMBUSTIBLE REMOVING MEANS, A TEST FILAMENT CELL IN THE OTHER BRANCH LINE, A FILAMENT IN EACH CELL MEANS FOR HEATING SAID FILAMENTS AT GIVEN RATES OF HEAT GENERATION, AND MEANS FOR COMPARING THE TEMPERATURES OF THE FILAMENTS.