Heat Losses in Lehr Conveyors

JSGT 1927 V11 T037-T039

A conveyor of the continuous type, which is the one most generally used in modern lehrs, has the disadvantage of great weight and, being in continuous travel through great heat down to room temperature, carries away a substantial quantity of heat through the metal from the hot chamber of the lehr; in turn, the conveyor has again to be heated to the temperature of the glassware on returning to the feeding end.

F. A. Hurlbut