Apparatus for determining a chemically reactive gas

Claim 1

AN APPARATUS FOR MEASURING THE CONTENT OF A CHEMICALLY REACTIVE GAS COMPRISING, IN COMBINATION, A FIRST ROLLER, A SECOND ROLLER, DRIVING MEANS CONNECTED TO SAID SECOND ROLLER, SAID SECOND ROLLER BEING CONSTRUCTED SO AS TO UNWIND A PAPER TAPE FROM SAID FIRST ROLLER TO SAID SECOND ROLLER WHEN ACTUATED BY SAID DRIVING MEANS PASS SAID PAPER TAPE THROUGH MEANS MOUNTED INTERMEDIATE SAID FIRST AND SECOND ROLLER CONSISTING OF, IN ORDER, AN IMPREGNATING VESSEL, A FIRST PHOTOELECTRIC CELL ASSEMBLY, A GAS EXPOSURE CELL, AND A SECOND PHOTOELECTRIC CELL ASSEMBLY, SAID GAS EXPOSURE CELL BEING FURTHER CHARACTERIZED IN THAT IT COMPRISES A CLOSED VERTICAL SLOTTED HOOD MEMBER, A FIRST CONDUIT EXTENDING THROUGH A WALL OF SAID HOOD MEMBER AND CENTRALLY DISPOSED THEREIN WITH ITS INNER END OPEN AND POSITIONED ADJACENT TO THE BOTTOM PORTION OF SAID HOOD MEMBER AND POSITIONED ABOVE AND BETWEEN A PAIR OF SLOTS LOCATED IN BOTTOM PORTIONS OF OPPOSITE WALLS OF SAID HOOD MEMBER, SAID SLOTS BEING ARRANGED SO AS TO PASS SAID PAPER TAPE HORIZONTALLY THERETHROUGH, SAID FIRST CONDUIT BEING ADAPTED TO CONDUCT A GASEOUS MIXTURE INTO SAID GAS CELL, A SECOND CONDUIT ATTACHED TO SAID HOOD MEMBER ADAPTED TO EXHAUST GASES FROM WITHIN SAID CELL TO THE ATMOSPHERE AND A RECORDING POTENTIOMETER CONNECTED TO SAID FIRST AND SECOND PHOTOELECTRIC CELL ASSEMBLIES.

Claim 2

AN APPARATUS FOR MEASURING THE CONTENT OF A CHEMICALLY REACTIVE GAS COMPRISING, IN COMBINATION, A FIRST ROLLER, A SECOND ROLLER, DRIVING MEANS CONNECTED TO SAID SECOND ROLLER, SAID SECOND ROLLER BEING CONSTRUCTED SO AS TO UNWIND A PAPER TAPE FROM SAID FIRST ROLLER TO SAID SECOND ROLLER WHEN ACTUATED BY SAID DRIVING MEANS PASS SAID PAPER TAPE THROUGH MEANS MOUNTED INTERMEDIATE SAID FIRST AND SECOND ROLLER CONSISTING OF, IN ORDER, AN IMPREGNATING VESSEL, A FIRST PHOTOELECTRIC CELL ASSEMBLY, A GAS EXPOSURE CELL, AND A SECOND PHOTOELECTRIC CELL ASSEMBLY, SAID GAS EXPOSURE CELL BEING FURTHER CHARACTERIZED IN THAT IT COMPRISES A CLOSED VERTICAL SLOTTED HOOD MEMBER, A FIRST CONDUIT EXTENDING THROUGH A WALL OF SAID HOOD MEMBER AND CENTRALLY DISPOSED THEREIN WITH ITS INNER END OPEN AND POSITIONED ADJACENT TO THE BOTTOM PORTION OF SAID HOOD MEMBER AND POSITIONED ABOVE AND BETWEEN A PAIR OF SLOTS LOCATED IN BOTTOM PORTIONS OF OPPOSITE WALLS OF SAID HOOD MEMBER, SAID SLOTS BEING ARRANGED SO AS TO PASS SAID PAPER TAPE HORIZONTALLY THERETHROUGH, SAID FIRST CONDUIT BEING ADAPTED TO CONDUCT A GASEOUS MIXTURE INTO SAID GAS CELL, A SECOND CONDUIT ATTACHED TO SAID HOOD MEMBER ADAPTED TO EXHAUST GASES FROM WITHIN SAID CELL TO THE ATMOSPHERE AND A RECORDING POTENTIOMETER CONNECTED TO SAID FIRST AND SECOND PHOTOELECTRIC CELL ASSEMBLIES.