Test of Cream Separatoks. 171 



tomatic reducing valve just before entering the turbine. The 

 weight of milk separated and the speed of rotation of the turbine 

 were noted. 



The data are as follows : 



Speed of rotation 7,000 revs, per minute. 



Weight of milk passing through separator 1,287 lbs. per hour. 



Steam consumption of turbine 160 lbs. per hour. 



It was not found possible to measure the power absorbed by 

 the machine. 



The turbine separator cannot be directly compared with the 

 others. A general idea of its performance may be obtained from 

 its steam consumption which may roughly be taken as equiva- 

 lent to that of a 4 horse power engine. After allowing for its 

 greater capacity, it will be seen that it is less economical in steam 

 consumption (assuming 40 lbs. of steam per hour equivalent to 

 one developed horse power) than any of the other separators 

 tested. 



In each of the remaining five separators, the power absorbed 

 was measured by an Emerson Transmission Dynamometer, 

 placed between the driving shaft and the countershaft. Each 

 machine was driven from a separate countershaft, supported 

 on two bearings. Two of the machines obtained the neces- 

 sary speed of rotation by means of toothed wheel gearing ; 

 the other three by belting through a second countershaft or 

 intermediate. In each case the power measured was that re- 

 quired to drive the separator together with its countershaft or 

 countershafts. 



The performances of the different machines are given below : 



(7). The United States Extractor Separator No. 3, by the Ver- 

 mont Farm Machine Co., Bellows Falls, Vt., is driven from one 

 countershaft and obtains the necessary speed of rotation by means 

 of toothed gearing. It was run only as a separator. The ob- 

 served data are as follows : 



Weight of milk separated 582 lbs. per hour. 



Power absorbed by separator running empty 40 Horse Power. 



Power absorbed by separator when separating 44 Horse Power. 



(4). The De Eaval Baby No. 3, of the DeLaval Separator Co., 

 No. 74 Cortlandt St., New York City, is geared in a manner sim- 

 ar t o the preceding. The data obtained were : 



