132 SCIENCE OF SUCCESSFUL THRESHING 



work, put a man with each team until they are accustomed 

 to the noise and to traveling in a circle. 



Setting a Horse-Power. A horse-power, to work 

 properly, must be securely held in position. To do this, 

 it is necessary to use at least four stakes, each of which 

 should be about three feet long. The power should be set 

 in alignment with the separator so that the tumbling-rods 

 are as straight as possible. As it is almost impossible to 

 secure the power so that it will not shift slightly when 

 started, it is best to make allowance for this when setting. 

 The line of rods cannot be straight horizontally, as one end 

 must attach to the spur-pinion shaft of the power and the 

 other to the bevel-gear shaft of the separator, while the 

 second rod from the power must lie near the ground in or- 

 der to allow the horses to walk over it. The angles in the 

 line of rods necessary to meet these conditions are taken 

 care of by the knuckles connecting them, but the angles 

 should be carefully divided so that they are as slight as 

 possible at each knuckle. When run at great angles, 

 knuckles consume considerable power and cause excessive 

 and unnecessary work on the part of the horses. 



Lubrication of the Horse-Power. There are two bull- 

 pinion boxes (an upper and lower), and two center-boxes 

 at each end, making eight boxes in all, to be oiled on the 

 bull-pinion shafts. There are also two spur-pinion shaft 

 boxes and the journals of the traverse-rollers to be oiled. 

 All the gearing and the bottom and the top of the bull- 



