CHAPTER V. 

 THE CLEANING APPARATUS. 



, HE fan and sieves aided by the tailings auger 

 and tailings elevator separate the grain from 

 the chaff. It is in the handling of these, 

 which constitute the "cleaning apparatus/' 

 more than any other part of the separator, , 

 that the skill of the operator or separator 

 "tender," as he is usually called, shows itself 

 and the local reputation of any particular machine is largely 

 due to its record as a "cleaner." 



The Fan Blinds. The position of the fan blinds regulates 

 the amount of wind or "blast" that the fan produces. These 

 should be adjusted to clean the grain without blowing it over 

 and this adjustment can be made while the machine is run- 

 ning. Both upper and lower blinds should be partly open. 

 The right hand blinds affect the left side of the sieve and 

 vice versa; therefore, if grain is being blown over on one 

 side, the blinds on the opposite side should be closed a little. 

 Use as much wind as possible without blowing over grain. 

 In windy weather it is necessary to close the blinds on the 

 windward side of the machine more than those on the other 

 side. The blast is 'retarded by the volume of chaff it is 

 moving, hence heavy feeding, and a blast that is all right 



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