Apparatus for feeding gaseous materials to glass melting furnaces

Claim 1

A DEVICE FOR INJECTING GASEOUS MATERIALS INTO A BODY OF MOLTEN GLASS IN A GLASS FURNACE CHAMBER HAVING SIDE AND BOTTOM WALLS SAID DEVICE COMPRISED OF A PAIR OF TUBULAR MEMBERS IN CONCENTRIC ARRANGEMENT MOUNTED IN AN APERTURE IN A WALL OF SAID FURNACE AT A PLACE BELOW THE SURFACE OF SAID GLASS BODY THEREIN AND WITH THE OUTER TUBE OF LARGER INTERNAL DIAMETER THAN THE EXTERNAL DIAMETER OF THE INNER TUBE, THEREBY PROVIDING AN ANNULAR CHAMBER BETWEEN SAID TUBES AND EXTENDING ALONG THE MAJOR PORTION OF THE LENGTH THEREOF, SAI CHAMBER BEING SEALED AT ITS OPPOSITE ENDS, A NOZZLE HEAD AT ONE END OF SAID ANNULAR SPACE AND ARRANGED TO FORM ONE OF SAID END SEALS, SAID HEAD HAVING A RESTRICTED OUTLET OPENING ENXTENDING THERETHROUGH THAT COMMUNICATES WITH THE FURNACE CHAMBER AND CONNECTING WITH THE INNER TUBE, SAID HEAD FORMED WITH AN ANNULAR COOLING CHAMBER EXTENDING CIRCUMFERENTIALLY THEREOF, MEANS TO SUPPLY SAID GASEOUS MATERIALS UNDER OPERATING PRESSURE TO SAID CHAMBER, APERTURED MEANS IN SAID HEAD CONNECTING SAID CHAMBEER TO THE INNER TUBE TO PASS SAID GASES INTO SAID INNER TUBE AND THROUGH SAID OUTLET OPENING INTO THE FURNACE CHAMBER MEANS FOR CIRCULATING A COOLING FLUID THROUGH SAID NOZZLE COOLING CHAMBER, RECIPROCATING VALVE MEANS WITHIN SAID INNER TUBE ADAPTED TO CLOSE SAID OUTLET OPENING, AND VALVE OPERATING MEANS CONNECTED TO SAID VALVE MEANS AND TO SAID GASEOUS SUPPLY MEANS NORMALLY POSITIONING THE VALVE MEANS TO OPEN SAID OUTLET AND OPERABLE AUTOMATICALLY TO CLOSE SAID OUTLET OPENING IN RESPONSE TO A PREDETERMINED REDUCTION IN PRESSURE OF SAID SUPPLY MEANS BELOW SAID OPERATING GAS PRESSURE.

Claim 2

A DEVICE FOR INJECTING GASEOUS MATERIALS INTO A BODY OF MOLTEN GLASS IN A GLASS FURNACE CHAMBER HAVING SIDE AND BOTTOM WALLS SAID DEVICE COMPRISED OF A PAIR OF TUBULAR MEMBERS IN CONCENTRIC ARRANGEMENT MOUNTED IN AN APERTURE IN A WALL OF SAID FURNACE AT A PLACE BELOW THE SURFACE OF SAID GLASS BODY THEREIN AND WITH THE OUTER TUBE OF LARGER INTERNAL DIAMETER THAN THE EXTERNAL DIAMETER OF THE INNER TUBE, THEREBY PROVIDING AN ANNULAR CHAMBER BETWEEN SAID TUBES AND EXTENDING ALONG THE MAJOR PORTION OF THE LENGTH THEREOF, SAI CHAMBER BEING SEALED AT ITS OPPOSITE ENDS, A NOZZLE HEAD AT ONE END OF SAID ANNULAR SPACE AND ARRANGED TO FORM ONE OF SAID END SEALS, SAID HEAD HAVING A RESTRICTED OUTLET OPENING ENXTENDING THERETHROUGH THAT COMMUNICATES WITH THE FURNACE CHAMBER AND CONNECTING WITH THE INNER TUBE, SAID HEAD FORMED WITH AN ANNULAR COOLING CHAMBER EXTENDING CIRCUMFERENTIALLY THEREOF, MEANS TO SUPPLY SAID GASEOUS MATERIALS UNDER OPERATING PRESSURE TO SAID CHAMBER, APERTURED MEANS IN SAID HEAD CONNECTING SAID CHAMBEER TO THE INNER TUBE TO PASS SAID GASES INTO SAID INNER TUBE AND THROUGH SAID OUTLET OPENING INTO THE FURNACE CHAMBER MEANS FOR CIRCULATING A COOLING FLUID THROUGH SAID NOZZLE COOLING CHAMBER, RECIPROCATING VALVE MEANS WITHIN SAID INNER TUBE ADAPTED TO CLOSE SAID OUTLET OPENING, AND VALVE OPERATING MEANS CONNECTED TO SAID VALVE MEANS AND TO SAID GASEOUS SUPPLY MEANS NORMALLY POSITIONING THE VALVE MEANS TO OPEN SAID OUTLET AND OPERABLE AUTOMATICALLY TO CLOSE SAID OUTLET OPENING IN RESPONSE TO A PREDETERMINED REDUCTION IN PRESSURE OF SAID SUPPLY MEANS BELOW SAID OPERATING GAS PRESSURE.