THE ARTIFICIAL SEASONINC> OF TIMBEK 



J99 



the timber on trolleys, and charging these into the compartment with the 

 thinner material all to the discharge end. This thinner material will 



A.B.C THERMAL CIRCULATION KILN. 

 fERlTHS AUTOMATIC MOIST AIR DRYER) 



On/ TJ^mber 

 0(y.'-/e/-End. 



Oreen 



T/mher 



Diagram of Thermal Circulation Progressive 1\iln. 



naturally dry more quickly than the rest, so that it can be taken out 

 earlier, a longer time being allowed for the thicker plank. 



Eumi Moist Air Progressive Kiln at the Le-i'laxd Motor Co.'s Works, 



DRYING I-INCH \\'ALNUT FOR AEROPLANE PROPELLERS, 

 (Photograpli by permission nf Ley];iii(t iMotr.rs Ltil.) 



7\nother hybrid arrangement is to divide the long compartment into 

 three or more sections or zones, by means of doors or curtains, difterent 



