204 SCIENCE OF SUCCESSFUL THRESHING 



mended. Some threshermen use a separator which has 

 been discarded for regular grain threshing and this ar- 

 rangement is not objectionable. As the corn is shelled by 

 the machine it must be drier than is necessary for a husker- 

 shredder, or the shelled corn will heat and spoil. Usually 

 the cylinder is run at its normal speed. Two rows of con- 

 cave-teeth are sufficient. Often concave-teeth are forged 

 so as to be sharpened on the front edge or else shortened 

 to lessen the amount of power required to drive the cyl- 

 inder. The fish-backs and riser supports may be removed 

 from the straw-rack and the risers lowered so that 

 the rack is flat, similar to the special "Texas" rack used 

 for Kafir-corn. 



Threshing Peanuts. The equipment necessary to con- 

 vert a regular "Case" separator into a peanut separator con- 

 sists of concaves, pulleys, sieves, special bagger and a 

 tailings spout. It is also necessary to remove some of the 

 teeth from the cylinder. The teeth needed for Spanish 

 peanuts may conveniently be located as follows : Turn the 

 cylinder until you find a bar that has teeth about I inch 

 from each end. The teeth in this bar and in every alternate 

 one are the ones to be used. Remove all others ; also the 

 inside bars from which the teeth have been removed. Two- 

 inch lip-sieves are used in the conveyor, conveyor extension 

 and shoe. The two former must be well opened and the 

 shoe-sieve should be set well up in front and nearly level 

 or perhaps a trifle low next to the tailings auger; other- 

 wise, the sieve will begin to "load" and the passage be 



