4. IN A CURING OVEN FOR ENAMELED WIRE: (A) CASING MEANS HAVING PARTITION MEANS DIVIDING THE INTERIOR OF SAID CASING MEANS INTO AN ELONGATED WORK CHAMBER HAVING OPPOSED OPEN INLET AND OUTLET ENDS FOR PASSAGE OF ENAMELED WIRE THERETHROUGH, A DISTRIBUTION CHAMBER ADJACENT THE INLET END PORTION OF SAID WORK CHAMBER, A COMBUSTION CHAMBER, AND GAS PASSAGE MEANS; (B) SAID GAS PASSAGE MEANS INCLUDING, A DELIVERY PASSAGEWAY EXTENDING FROM SAID COMBUSTION CHAMBER AND COMMUNCATING WITH SAID WORK CHAMBER ADJACENT THE OUTLET END THEREOF, A SECOND DELIVERY PASSAGEWAY EXTENDING FROM SAID COMBUSTION CHAMBER TO SAID DISTRIBUTION CHAMBER ADJACENT THE INLET END OF SAID WORK CHAMBER, A RETURN PASSAGEWAWY COMMUNICATING WITH SAID WORK CHAMBER SUBSTANTIALLY CENTRALL BETWEEN THE OPPOSITE ENDS THEREOF FOR DELIVERY OF GASEOUS MATERIAL FROM SAID WORK CHAMBER TO SAID COMBUSTION CHAMBER, AND AN OUTLET PASSAGEWAY FOR DIRECTING A PORTION OF SAID GASEOUS MATERIAL TO THE EXTERIOR OF SAID CASING MEANS; (C) A BURNER FOR GASEOUS MATERIAL DELIVERED TO SAID COMBUSTION CHAMBER; (D) A BLOWER IN SAID PASSAGE MEANS; (E) A CATALYTIC ELEMENT INTERPOSED BETWEEN SAID COMBUSTION CHAMBER AND SAID DELIVERY PASSAGEWAYS AND OUTLET PASSAGEWAY FOR CATALYTIC OXIDATION OF GASEOUS MATERIAL DELIVERED FROM SAID COMBUSTION CHAMBER; (F) AND VALVE MEANS IN SAID DELIVERY PASSAGEWAYS FOR CONTROLLING THE FLOW OF GASEOUS MATERIAL FROM SAID CATALYTIC ELEMENT TO SAID WORK CHAMBER; (G) SAID PARTITION MEANS INCLUIDING A HEAT CONDUCTING WALL ELEMENT BETWEEN SAID WORK CHAMBER AND SAID DISTRIBUTION CHAMBER FOR RADIATING HEAT TOWARD WIRE PASSING THROUGH THE ADJACENT PORTION OF SAID WORK CHAMBER.