174 SCIENCE OF SUCCESSFUL THRESHING. 



which the idler pulley runs. The friction band of governor 

 should not be oiled after it becomes smooth. 



The Governor drives the feeder by means of a friction 

 band, which is clamped over a friction pulley, by means of 

 the centrifugal action of the weights. The spring tension on 

 these weights should be such that the feeder will not start 

 until cylinder is very near its normal speed. In starting a 

 new feeder any paint that may be on the inside of friction 

 band and on the face of the friction pulley should be care- 

 fully removed and the surface of both scoured with emery- 

 cloth or fine sand-paper until smooth and bright. A very 

 little oil may be used the first few days, but when once 

 properly adjusted, it will not require any further lubrication. 

 The best adjustment of the governor will be found to be 

 as follows : First adjust the friction band so that the weight 

 arms may be pulled out about half way by hand. Then set 

 the weights about one-half inch from the ends of the arms 

 and give the spring but little tension when the weights are 

 in and the band is loose. The final adjustment of the spring 

 can best be made by trying it and setting it to suit the speed. 

 Wrench 5548T will be found convenient in adjusting the 

 spring. 



Speed. With the regular cylinder speed of 750 revolu- 

 tions for the 20 bar and 1075 revolutions of the 12 bar cylin- 

 ders the knife-arm crank of the feeder will make 258 revolu- 

 tions per minute. The retarder blades should be driven 

 from the carrier-rake drive shaft and when so driven, will 



