FEED MILLS 237 



tandem, the claim being that the work is more evenly 

 divided between them, as they work upon an equalizer 

 and each horse travels in the same circle. 



With triple-geared or higher-geared sweep mills the 

 capacity for grinding is so great that two horses are not 

 sufficient to furnish the power; more horses must be 

 added. The horses may be hitched in teams to sweeps 

 opposite each other with an equalizer across or placed in 

 tandem, as referred to. 



335. Combination mills, or mills in combination with a 

 small sweep power, are manufactured to enable the 

 owner to drive other machinery such as a corn sheller. 

 Such a mill is confined to the geared sweep type. 



POWER MILLS 



336. Power mills are operated by belt or tumbling rod. 

 Following is a discussion of the important parts of power 

 mills. 



A balance wheel is sometimes placed upon a mill to 

 prevent the mill from choking due to an extra demand 

 for power which will occur at times. The balance wheel 

 is considered a good thing to have on a mill. 



Divided hopper. It is often desired to grind at least 

 two kinds of grain at a time. To accomplish this a 

 divided hopper is provided. 



Safety device. It often occurs that some hard sub- 

 stance, as a nail or a nut, becomes mixed in the grain and 

 is placed in the mill. The safety device is a wooden 

 break pin or spring catch, which permits the buhrs to 

 open without damaging the mill. 



The quick release is for the 'same purpose as the safety 

 device, but is operated by hand. By its use the machine 

 may be prevented from clogging when heavily loaded 

 for any reason. 



