THRESHING WITH SPECIALLY EQUIPPED SEPARATOR 1 95 



5373T Cylinder Pulley drives beater and crank, 22" dia. (remove 

 tightener), runs crank normal speed, 230 r. p. m., with 

 cylinder speed of about 290. 



6374T Cylinder Pulley drives feeder, 25" dia., runs feeder-crank 

 normal speed, 258 r. p. m., with cylinder speBd of 290. 



A302H Cylinder Pulley drives wind stacker, 22" dia., and 1 pc. 

 A303H or B303H Wind Stacker Pulley, 8%" dia., run 

 jack-shaft normal speed, 750 r. p. m., with cylinder speed 

 of 290. 



Threshing Rice. This grain is difficult to thresh clean 

 from the heads without cracking or hulling the kernels. 

 Owing to the fact that the rice when it reaches the mill is 

 screened before it is hulled, any kernels hulled in threshing, 

 are taken out in the screening and are therefore as ob- 

 jectionable as the broken rice which is sold as "grits" at 

 an inferior price. The teeth in a regular cylinder are 

 spaced too closely for ordinary rice threshing, although 

 good work is sometimes done when the teeth have become 

 somewhat worn and are consequently thinner than when 

 new. The "Case" rice thresher has the proper spacing of 

 teeth to thresh this grain out of the heads without crack- 

 ing more than a small percentage. What is said in Chapter 

 II in regard to the proper endwise adjustment of the 

 cylinder and the necessity of keeping the teeth straight 

 applies particularly well to rice threshing. In reading 

 that chapter with reference to rice, however, it should be 

 borne in mind that a difference exists, from the fact that 

 the space between the concave and cylinder teeth is about 

 three-sixteenths of an inch in the rice machine instead of 

 about an eighth of an inch, as it is in the regular. When 

 the rice is in good condition, the amount hulled and broken 

 should not exceed five per cent., but when the grain is 



