CREAM SEPARATION 



75 



in the skimmed-milk is very slight, as shown in Fig. 37. 

 A slight variation in the speed of the crank does not 



Revolutions 60 54 50 

 Separator 1 



55 45 



Separa- 



60 50 

 Separa- 

 tor 8 



Fig. 36. — A diagram representing percentage of fat in cream as in- 

 fluenced by the mraiber of revolutions of the separator crank a minute. 



affect the amount of fat separated from the whole milk, 

 but it does affect the quantity of the cream. 



All hand separators have the number of revolutions 

 necessary for efficient separation marked on the crank, and 



Revolutions 60 54 50 

 Separator 1 



55 45 60 50 

 Separa- Separa- 

 tor 4 tor 5 



Fig. 37. — A diagram representing percentage of fat in skimmed-milk as 

 influenced by the number of revolutions of the separator crank a 

 minute. Percentages at left. 



all power separators carry instructions as to the proper 

 rate of speed at which they should be operated. Naturally 



