1 86 SCIENCE OF SUCCESSFUL THRESHING. 



rier as it does not pull away from the stack until elevated to 

 a considerable height. 



Oiling the Combination-Stacker. The bearings of the 

 jack- and upright-shafts are fitted with compression-cups 

 for hard-oil. These may be turned up as often as necessary 

 to give sufficient lubrication. The bevel-gears driving the 

 fan should be greased. The turret mechanism driving the 

 carrier-rake should be oiled occasionally. The intermediate- 

 gear-ring, and the two small pinions meshing with it, should 

 be greased. 



