Spectrometry apparatus

Claim 1

IN AN OPTICAL SPECTROMETRY APPARATUS, IN COMBINATION, A GAS BURNER; A DOUBLE WALLED, OPEN ENDED FLUID JACKET CLOSELY SURROUNDING SAID BURNER AND ARRANGED TO INTERSECT THE RADIANT BEAM OF ITS OBSERVED FLAME; MEANS FOR UPSTANDING SUPPORT OF SAID GAS BURNER AND FLUID JACKET, SAID MEANS FITTED FOR ADMITTING GAS FROM A SUPPLY TO SAID BURNER AND FOR ADMITTING FLUID FROM A SAMPLE THROUGH THE LOWER END OF SAID JACKET, SAID SUPPORTING MEANS CONSTRUCTED AND ARRANGED ALSO TO CONTROL THE ADMITTING THROUGH THE JACKET LOWER END FOR HIGH STABILITY AND INTENSITY OF THE BURNER FLAME; MEANS FITTING THE JACKET FOR COUPLING TO FLUID SUPPLY AND DISCHARGE CONDUITS, WHEREBY SAID FLUID JACKET IS OPERATIVE UPON THE FLOWING OF FLUID THERETHROUGH TO FILTER THE UNWANTED SPECTRUM OF AND ALSO TO INSULATE THE HEAT OF SAID FLAME; A PLURALITY OF COMPACT, STABLE, SENSITIVE DETECTOR CELLS OF THE PHOTORESITIVE TYPE GENERATING RESISTANCE CHANGES RESPONSIVE TO SOURCE CHANGES AND WHOSE OUTPUT MAY BE MEASURED BY A STANDARD OHMMETER; A NON-VAPOR-PERMEABLE ENVELOPE HERMETICALLY SEALING SAID PHOTORESISTIVE DETECTOR CELLS; MEANS FOR SUPPORTING SAID CELLS AND ENVELOPE AGAINST THE OUTSIDE OF SAID JACKET IN ALIGNMENT WITH THE RADIANT BEAM OF SAID FLAME, THE CELLS THEREBY MOUNTED IN CLOSE PROXIMITY TO THE FLAME YET MAINTAINED AT SUBSTANTIALLY CONSTANT TEMPERATURE; AND DETECTOR CIRCUIT MEANS FOR APPLYING A POTENTIAL TO SAID PHOTORESISTIVE CELLS AND FOR COMPARING THE RESISTANCE CHANGES WHICH THEY PRODUCE RESPONSIVE TO FLAME CHANGES.