32 



Dierck S. Mollman, of Osnabruck (Germany) also made a 

 large, unwieldy apparatus with brushes shown in the first 

 edition, but I now illustrate his latest construction, in Fig. 



21, where they propose to prevent 

 the milk from scorching on the 

 heating surface and keeping this 

 from coating by having an inner 

 cylinder and covering the stirrer 

 with brushes of same width as 

 the milk space. The water is 

 heated by Korting steam jet de- 

 scribed on page 60, Fig. 62, We 

 have in this heater the same idea 

 which was first evolved by Le- 

 feidt and Lentch, of Schoeningen 

 (Germany) in their first centri- 

 fugal heater, namely, to get away 

 from a large body of milk and se- 

 cure its passage in a thin layer- 

 over the heating surface. This is 

 illustrated in a sectional view, 

 Fig. 22. 



In a solid cast iron steam 

 heated jacket revolves on a fixed 

 spindle a separator bowl which 

 is slightly wider at the opening. 

 The milk is led into it through 

 an opening in the cover. In the 

 front part of the bowl is a parti- 

 tion with two holes (not far from the outer edge), through 

 which the milk escapes, after leaving its sediment in the front, 



^M 



Fig. 21. 



