no 



SCIENCE OF SUCCESSFUL THRESHING. 



chains. The ring near the center of each chain is merely a 

 stop and the rods should never be hooked into it. 



Speed of the Tumbling-Rods. The use of the sixteen- 

 cog pinion, which gives one-hundred and one revolutions of 

 the tumbling-rods to one round of the horses, is recom- 

 mended, and will ordinarily run the cylinder of a "Case" 

 separator at the proper speed. The following table gives a 

 complete list of spur-pinions for "Case" horse-powers', any 

 of which may be obtained if desired. 



Separator Side-Gear. A separator must be fitted with a 

 side-gear, or a jack must be used, in order to be driven by 

 means of a horse-power. A speed of 750 revolutions for 

 the twenty-bar or 1075 f r tne twelve-bar cylinder of "Case" 

 separators fitted with a side-gear, requires a tumbling-rod 



