Dept. Bull. 1136, U. S. Dept. of Agriculture PLATE 2 
AN AUXILIARY AND A MAIN APPLIANCE FOR DRYING 
A.—Typical electric oven for drying moisture sections. Electric ovens can be 
obtained in various sizes and qualities to suit individual requirements. Each one 
should always be provided with an automatic thermostat, accurate to within 2° F., 
to keep the temperature constant. 
B.—Typical heating coils for external-blower compartment kilns. Steam enters 
the coils through the upper half of the receiver at the right, and condensate is drawn 
oft from the lower half. The cast-iron base into which the pipes are screwed is cored 
to provide separate paths for the steam and the condensate. 
