SYNCHRONOUS GENERATORS 



usually more expensive than the other types. A drop in the 

 pressure of the oil supply or a momentary failure of the same 

 would cause serious damage to the bearing. 



FIG. 197. Kingsbury Thrust Bearing. 



Contact-plate Bearings. To this class, which is the most gen- 

 erally used, belong the Kingsbury and the Spring-thrust bearings. 

 The former consists of a stationary and a revolving plate sub- 

 mersed in a bath of oil under atmospheric pressure. The lower 



