236 



FARM MACHINERY 



while the outer is rotated by a sweep. Nearly all sweep 

 mills are arranged to grind ear corn. Fig. 177 illustrates 

 a common type of the sweep mill. In order to increase 



FIG. 176 BUHRS FOR A SWEEP MILL 



the capacity of the mill one of the buhrs is geared up 

 until it makes 3, or even 9 to n, revolutions for each 

 round of the team. 



r 



FIG. 177 A SWEEP MILL 



334. The hitch. The usual arrangement with the sim- 

 ple sweep mill is to hitch the team to the end of the 

 single sweep. Some makers arrange to hitch the horses 



