7 6 



CANADIAN DAIRYING. 



centrifugal force is increased four times, as centrifugal 

 force increases as the square of the speed of the bowl. 



An ordinary 

 hand separator 

 running at full 

 speed of about 

 6,000 to 7,000 

 revolutions per 

 minute has a 

 tensile strain of 

 about sixteen 

 tons per square 

 inch, i.e., a force 

 equal to about 

 sixteen tons on 

 every square 

 inch of surface 

 to 



MAGNET CREAM SEPARATOR 

 (Made in Canada.) 



IS 



tending 



tear the bowl in 

 pieces ; hence it 

 must be made 

 of the very best 

 steel to with- 

 stand the strain, 

 and should not 

 be run at a speed 

 nuch above that 

 recommended 

 by the manu- 

 facturer. 



There are two general types of separator bowls 

 those which are hollow, and those having plates or 



