Liquid-cooled burner for open hearth furnaces

Claim 1

A LIQUID-COOLED BURNER FOR USE IN HIGH TEMPERATURE FURNACES, HAVNG A STRUCTURE COMPRISING: (A) A PAIR OF SPACED SUBSTANTIALLY PARALLEL FUEL PIPES EACH HAVING A REAR END AND A FORWARD END, (B) A LIQUID-COOLANT JACKET SURROUNDING ONE OF SAID FUEL PIPES AND SPACED UNIFORMLY THEREFROM TO FORM A COOLANT PASSAGE END EXTENDING FROM THE REAR END TO THE FORWARD END THEREOF, (C) A LIQUID-COOLANT JACKET SURROUNDING THE OTHER OF SAID FUEL PIPES AND SPACED UNIFORMLY THEREFROM TO FORM A COOLANT PASSAGE AND EXTENDING FROM THE REAR END TO THE FORWARD END THEREOF, (D) A WATER INLET AT THE REAR END OF ONE OF THE SAID LIQUID-COOLANT JACKETS, (E) A WATER OUTLET AT THE REAR END OF THE OTHER OF SAID LIQUID-COOLANT JACKETS, (F) A LIQUID-COOLANT PASSAGE CONNECTING THE FORWARD ENDS OF SAID WATER JACKETS, (G) PACKING GLANDS COMPRISING A PACKING GLAND BODY SECURED TO EACH OF THE SAID LIQUID-COOLANT JACKETS, A SEALING RING INSERTED THEREIN TO COMMUNICATE WITH THE SHOULDER THEREOF, A FERRULE ABUTTING SAID SEALING RING, A BACKING RING SEATING ON SAID FERRULE TO ENCOMPASS ING RING BEARING AGAINST SAID FERRULE TO ENCOMPASS THE SAID SEALING RING TO PREVENT LEAKAGE OF WATER REARWARDLY THROUGH THE PACKING GLAND BUT ALLOWING FREE MOVEMENT OF SAID FUEL PIPES ENCIRCLED BY SAID SEALING RING, (H) MEANS TO PERMIT ONE LIQUID-COOLANT JACKET TO MOVE RELATIVE TO THE OTHER LIQUID-COOLANT JACKET.