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SCIENCE OF SUCCESSFUL THRESHING. 



To Insert Common Sieves place a long rod in the bottom 

 of slots, leaving nuts loose. The rods at fan end of sieve 

 are about i l /2 inches longer than those at rear end. In 

 changing from one sieve to another it is not necessary to 

 remove the rod at fan end. Slide in the sieve and put a 

 short rod in the proper hole at rear. Adjust sieve to proper 



Rear End 



FIG. 41. SHOE SHOWING POSITIONS OF SIEVE RODS. 



position at front end and tighten the nuts. If two sieves are 

 to be used put the top one in first with rod in bottom of the 

 slots. Raise it up to proper position, then put rod for lower 

 sieve in the slots and slide it in below the other. The rod 

 of upper sieve cannot be tightened until lower sieve is in 

 place. Insert pins in the holes to hold it up while putting in 

 lower sieve. Screw the nuts up quite tightly, but not so 

 much as to cause the sieves to buckle. Twenty-penny wire 

 nails may be used as pins in adjusting sieves. 



List of Common Sieves. The following sieves are used 

 for many other grains and seeds than those mentioned, but 

 the few given may serve to identify and explain the nature 

 of the sieves. 



