FARM SEPARATORS. 
157 
anything after the tread-power has once been purchased. The 
power can be supplied by using different kinds of animals. 
Fic. 92.—Showing how the internal bowl devices of Westphalia hand sepa- 
rator are washed. (N. Y. Produce Review and American Creamery.) 
Sheep, goats, dogs, and bulls are used for this purpose. The 
process usually does not last very long, and it is not considered 
heavy work. Steam is good power, but 
it is hardly ever obtainable on the farm. 
Small gasoline-engines are also used very 
successfully. 
The machine should always run smoothly 
in order to get efficient skimming. It should 
never be stopped and started with a jerk. 
Start it slowly and there will be less dan- 
ger of breaking any of the gearing parts. 
The bowl and inside parts should be kept 
from rusting as described previously on 
page 145. The bearings should be well 
oiled. It is a good plan to have an extra 
Fic. 93.—Davis hand 
separator. 
bearing or two on hand, so that if one happens to wear 
