172 SCIENCE OF SUCCESSFUL THRESHING. 



evenly covered with straw, and will watch the stacker, tail- 

 ings and grain elevators and know the moment anything goes 

 wrong. 



Self-Feeders. A separator equipped with a feeding at- 

 tachment may be spoken of as a "self-feeder/' but properly 

 speaking, the attachment itself is a "feeder," not a "self- 

 feeder," because it feeds the separator, but does not feed 

 itself. 



Attaching the Feeder. Remove feed tables, hopper-arms 

 and foot-board, if they be on the machine. A wagon placed 

 in front of the separator will afford a convenient means of 

 supporting feeder head while bolting it in place. When the 

 head is bolted in position, the "notched bottom" and "re- 

 tarder bottom" may be put in place. The plate of the latter 

 must rest on top of the concave so that no ledge is formed. 

 Any man who has tried feeding a cylinder by hand when the 

 feed board had slipped off the concave, will understand the 

 importance of this. The carrier is held by the notches pro- 

 vided for it on the head, by pins. Slack for hooking the 

 sprocket chains of the rake may be obtained by partly folding 

 the carrier. When all pulleys, including the tightener and 

 governor, are fastened in place, all the bearings are oiled 

 and the governor adjusted according to the directions given 

 below, the feeder is ready to run. 



After attaching a feeder, it is well to try the cylinder for 

 end-play, for it may be that the ironsides supporting cylinder 

 boxes have been sprung enough to cause too much end-play 



