. Farm machinery and farm motors. FIG. 175—CHILLED IRON BUHRS are not used in preparing feed for stock to any is stated that the steel buhr has a large capacity, butwill fill or clog when damp grain is being ground. The duplex buhr has two grinding surfaces. The mov-ing plate moves between two stationary plates (Fig. 178). In order to grind ear corn a crusher is often provided toreduce the ears to pieces small enough to be fed to thebuhrs. In sw-eep mills the crushing teeth are made apart of the main bidirs. 333- Sweep mills.—The simple sweep mill consists oftwo conical bidirs. The i
. Farm machinery and farm motors. FIG. 175—CHILLED IRON BUHRS are not used in preparing feed for stock to any is stated that the steel buhr has a large capacity, butwill fill or clog when damp grain is being ground. The duplex buhr has two grinding surfaces. The mov-ing plate moves between two stationary plates (Fig. 178). In order to grind ear corn a crusher is often provided toreduce the ears to pieces small enough to be fed to thebuhrs. In sw-eep mills the crushing teeth are made apart of the main bidirs. 333- Sweep mills.—The simple sweep mill consists oftwo conical bidirs. The inner one remains stationary, 236 FARM MACHINERY while the outer is rotated by a sweep. Nearly all sweepmills are arranged to grind ear corn. Fig. 177 illustratesa common type of the sweep mill. In order to increase i. FIG. 176 UUIIKS FUK A SWEEP .MILL the capacity of the mill one of the buhrs is geared upuntil it makes 3, or even 9 to 11, revolutions for eachround of the team.
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