Coke oven structure

Claim 1

IN A HIGH CHAMBERED HORIZONTAL COKING RETORT OVEN THE COMBINATION OF HEATING ELEMENTS THEREFOR TO PROVIDE UNIFORM HEAT FOR THE COKING CHAMBERS COMPRISING, ELONGATED HEATING WALLS ON OPPOSITE SIDES OF SAID COKING CHAMBERS, SAID HEATING WALLS EACH HAVING TRANSVERSE DIVISION WALLS AND A PLURALITY OF INTERMEDIATE PARTITION WALLS THEREBETWEEN FORMING GROUPS OF VERTICAL COMBUSTION FLUES CONNECTED TO A COMMON CROSSOVER DUCT, SAID COMBUSTION FLUES EACH HAVING A BASE PORTION WITH AN OPENING THEREIN FORMING A GAS PORT FOR A LOW BURNER, A SOURCE OF PRESSURIZED FUEL GAS FOR EACH OF SAID LOW LEVEL BURNERS LOCATED BELOW SAID COMBUSTION FLUE BASE PORTION, CONDUIT MEANS CONNECTING SAID SOURCE OF PRESSURIZED FUEL GAS TO EACH OF SAID LOW LEVEL BURNERS, SAID DIVISION WALLS HAVING VERTICAL PASSAGEWAYS EXTENDING DOWNWARDLY THERETHROUGH AND EACH SAID PASSAGEWAY TERMINATING IN A GAS PORT FOR A HIGH LEVEL BURNER IN A FLUE ADJACENT TO SAID RESPECTIVE DIVISION WALL, SAID HIGH LEVEL BURNER POSITIONED ABOVE SAID LOW LEVEL BURNER IN SAID RESPECTIVE FLUES, A SOURCE OF PRESSURIZED FUEL GAS FOR EACH OF SAID HIGH LEVEL BURNERS LOCATED ABOVE THE UPPER PORTION OF SAID COMBUSTION FLUES, AND MEANS CONNECTING SAID VERTICAL PASSAGEWAYS WITH SAID SOURCE OF PRESSURIZED FUEL GAS.