36 



The milk enters at T and 

 passes through this half-inch 

 space, being prevented from fol- 

 loAving the revolving drum by 

 some ribs on the outer jacket, 

 and leaves at A. The cleaning 

 is done by lowering the outer 

 jacket, which slides on the 

 pillar K, supporting the ap- 

 paratus. The drum revolves 

 about 170 times per minute, 

 and the milk held in the appar- 

 atus is 30 Ibs. 



The Miller heater is a modifi- 

 cation of the Hill (Fig. 25), and 

 the Reck (Fig. 26), and seems 

 to be constructed on a good 

 principle, although I have heard 

 varying reports of it, some prais- 

 ing it highly; others making 

 light of the claimed advan- 

 tage. Although Mr. Miller, 

 who lives in Canton, Ohio, did 

 not answer my inquiries, I had 

 the opportunity of seeing it in 

 operation at the progressive 

 milk dealers, Mr. Sidney Wanzer 

 & Sons, Chicago. The plant consists of one heater and two 

 coolers. The heater consists of a wooden tub in which is in- 

 serted a tinned copper cylinder so as to leave a water space. 

 Jn this the water is heated by a steam jet on a similar plan 

 that Barber used so as to get a circulating motion in the heat- 

 ing water. This drum has an annular gutter into which the 

 milk overflows. Inside, a revolving drum leaves the milk, 

 introduced from the bottom, only a half inch space in which 

 to rise while it is being heated from both sides. The inner 

 and revolving drum has a curved ring which covers and over- 

 laps the milk gutter so as to prevent the overflow water from 

 getting in the milk. A steam jet sends hot water into the 

 revolving drum and the overflow is sent over the curved ring 

 into the outer water space. 



Fig. 26. 



