FARM MACHINERY 299 



sirable feature of a power mill, as it enables the machine 

 to run more steadily. When two kinds of grain are to 

 be ground together, a divided hopper is quite an advan- 

 tage. Most feed mills are provided 

 with safety devices which release the 

 grinding plates and prevent damage 

 should something hard be fed into the 

 mill, or with quick releases which will piftfs of cuiied'cast 

 enable the operator to separate the lron ' 

 grinding plates quickly. Such mills should be provided 

 with an elevator or sacking attachment to assist in caring 

 for the ground feed as it is prepared. 



Selection of a Mill. The selection consists primarily in 

 securing a machine constructed with bearings which will run 

 well and can be adjusted easily, and with grinding plates 

 which can be easily replaced and adjusted. The capacity 

 of feed mills and the amount of feed which the mill will grind 

 in a given time depend upon the condition of the grain and 

 the fineness of grinding. Furthermore, the capacity of the 

 feed mill usually becomes less and less from the time the 

 grinding plates are new until they are replaced. A good feed 

 mill should grind five bushels of corn or two to three bushels 



of oats for each horse- 

 power used. 



CORN SHELLERS 

 There are two general 

 types of corn shellers on 

 the market, one is known 

 as the spring or picker 

 sheller and the other as 

 the cylinder sheller. 



Fig. 189. A small two-hoe picker- The Snrin^ C*r Pirkfr 



wheel sheller equipped with self-feeder, opnilg Or flCKGT 



cob carrier, and elevator. Sheller. The Spring Or 



