SEPARATORS MADE BY THE SEPARATOR CO., STOCKHOLM. 



129 



63. Separators made by the Separator Co., Stockholm. This com- 

 pany is represented in Germany by the Bergedoff Iron Co., in 

 Bergedoff, near Hamburg, and 

 makes in all, at present, four- 

 teen different separators for 

 machine and hand use. They 

 may be divided into separators 

 of the De Laval and the Alpha 

 types. 



(a) De Laval Separators. 

 Of these there are at present 

 two kinds. The De Laval 

 separators have in course of 

 time been very much improved. 

 The first was introduced into 

 Germany in 1879, and was used 

 at the co-operative dairy at 

 Hamm, in Hamburg. It was 

 the first employed to do con- 

 stant work in Germany. Its 

 drum had three independent 

 parts, which were screwed to- 

 gether, and were made tight with 

 rubber rings. In the year 1881 

 the arrangement of the drum 

 received its first improvement, 

 which consisted in replacing the three independent parts by one 

 piece, consisting of a cup-like box provided with flanges. In 1883 

 the drum received the simple form which it still retains. In the 

 year 1886 Dr. De Laval invented his steam-turbine, which he 



( M 175 ) I 



Fig. 31. Steam-turbine Separator. 



