336 



ELECTRICAL EQUIPMENT 



stationary plate is divided into a number of babbitted segments 

 spaced sufficiently apart to permit a free circulation of oil (see 

 Fig. 197). Each segment or shoe has a single pivot support located 

 toward one end of the shoe, slightly beyond the center of gravity 

 in the direction of rotation. This arrangement causes the space 



v 



FIG. 198. Spring-supported Thrust Bearing, Showing Rubbing Surface of 

 Rotating Ring; Stationary Ring with Sawcut is Raised to Show Arrange- 

 ment of Springs. 



between the shoe and the thrust block on the shaft to open slightly 

 at the other end of the shoe, where the oil is drawn in by the 

 rotation of the thrust block. The film of oil on the face of the 

 shoe thus assumes the form of a very fine wedge constantly urged 

 forward by the rotation of the thrust block. This bearing may be 



