THRESHING WITH SPECIALLY EQUIPPED SEPARATOR. 167 



ter-inch lip, F, makes a suitable chaffer, and the three- 

 eighths-inch lip-sieve, G, is the best as an upper-sieve in the 

 shoe. The latter should be placed in the first notch and 

 first hole and the lower shoe-sieve should be of the same 

 size and placed in the same position as given for adjustable- 

 sieves. Three sieves have been used in the shoe for clover, 

 but few operators can make three sieves do better than two. 

 The "Case" recleaner is sometimes used in hulling clover 

 and when fitted with the proper sieves, it will thoroughly 

 clean very weedy seed. 



Threshing Alfalfa or Lucerne. The same rules which 

 govern the hulling of clover apply in a general way to the" 

 threshing of alfalfa, although it is easier to rub the latter 

 out of its pods than the former out of its heads. The clover 

 concaves are sometimes used, but more often one or, more 

 of the regular three-row concaves filled with corrugated 

 teeth are all that is required. The sieves may be the same 

 and set in the same way as for clover. Often a weed known 

 as dodder or love-vine, grows with alfalfa and its seeds are 

 usually enough smaller than the alfalfa seed to allow the 

 greater part of them to be removed by screening. The most 

 suitable screen for this purpose is the one-twentieth-inch 

 round-hole, X. 



Threshing Orchard-Grass. In threshing this grass, the 

 cylinder should be run at its regular speed, and six rows of 

 concave teeth, set well up, should be used. Good work has 

 been done with the adjustable sieves alone, but as a rule, 



