228 SCIENCE OF SUCCESSFUL THRESHING 



the straw-carrier evenly covered with straw, and will 

 watch the stacker, tailings and grain elevators and know 

 the moment anything goes wrong. 



Self-Feeders. A separator equipped with a feeding 

 attachment may be spoken of as a "self-feeder," but prop- 

 erly speaking, the attachment itself is a "feeder," not a 

 "self-feeder," because it feeds the separator, but does not 

 feed itself. 



Attaching the Feeder. When necessary to attach a 

 feeder in the field, a wagon placed in front of the separa- 

 tor will afford a convenient means of supporting the 

 feeder head while bolting it in place. When the head is 

 secured in position, the "notched bottom" and "retarder 

 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 under- 

 stand the importance of this. The carrier is held in the 

 notches provided for it on the head, by pins. When all 

 pulleys 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 or else press the boxes so hard against 

 the hubs of the cylinder heads as to cause heating. This 

 is especially true of wood separators. 



