SCIENCE OF SUCCESSFUL THRESHING 



and it is well to bear in mind that as with other grains, 

 the work of separation and cleaning is easier when the 

 work of the cylinder is not overdone. The speed should 

 be low to prevent cracking the grain. The sieves should be 

 set the same as for wheat. In localities in which sufficient 

 buckwheat is grown to keep a separator threshing for 

 several days at a time, excellent results can be obtained 

 by changing the pulleys on the cylinder-shaft as is done for 

 threshing rice, thus making a low cylinder speed possible, 

 while the balance of the machine maintains its normal 

 motion. 



Threshing Millet. This is the most easily threshed 

 of the ordinary seeds. Usually the normal cylinder speed 

 and four rows of concave-teeth are sufficient to knock out 

 the seed. The adjustable-sieves will ordinarily clean it 

 sufficiently. If the separator be fitted with common sieves, 

 the three-quarter-inch lip sieve, F, should be used as a 

 chaffer, and either the three-eighths-inch lip sieve, G, or 

 the fifteen-sixty-fourths-inch round-hole sieve, H, used 

 in the second notch and third hole in the shoe. When a 

 lower sieve is desired with either the adjustable or com- 

 mon sieves, the one-eighth-inch round-hole sieve, O, or 

 the five-thirty-seconds-inch round-hole sieve, I, is suitable. 

 Either should be placed in the seventh notch and fifth hole. 



Threshing Spelts or Emmer. This grain is easily 

 threshed and if the directions for threshing oats be fol- 

 lowed, no difficulty will be experienced. 



