18 



Fig. 8. 



shown in Figs. 8 and 9. The apparatus is 

 swung on pivots. The steam enters 

 through one of them (b), this facilitates 

 the cleaning of the apparatus. The con- 

 densed water escapes at d, while the milk 

 enters by a cup a a which is connected 

 with the stirring apparatus and provided 

 with two tubes which lead to the bottom. 

 The milk escapes by c. 



A. ROSSLER of Berlin constructs a 

 similar apparatus and so does " AHRENS " 

 but his apparatus has a larger capacity 

 and thus exposes the milk to the heat for 

 a longer time. 



Messrs. D. H. 

 BURRELLof Little 



Falls N. Y. con- 

 structed another 

 modification of this 

 apparatus sugges- 

 ted by Mr. J. D. 

 Frederiksen. This 

 is illustrated in 

 Fig. 10. It has 

 the wooden tub A. 

 but the inner ves- 

 sel B B B B has H 

 cone in the centre 

 B' B' B' B' which 

 leaves a deep an- 

 ular vat M with a 

 stirrer D D D D.' 



The milk enters at H and the stirrer is driven by a cord pulley L 

 below the bottom which is connected by a shaft N through the tube 

 K K. Steam enters at s through a perforated coil s s which ends in 

 the centre of the cone. The space o o o o is filled with water and 

 has an overflow pipe not shown. The last milk is emptied at v and 

 the water at w. The top of the cone-B' B' is kept below the surface 

 of the milk which escapes at p. In order to prevent steam from 

 forcing the air from the cone, an aircock is provided at a. 



Fig. 10. 



