GOVERNORS 257 



Company, the servo-motors or power cylinders developing 250,000 

 foot-pounds being located on the floor below. The distinguishing 

 feature of this design is that all adjustable parts are enclosed 

 within the cast-iron frame, thus preventing their being tampered 

 with by unauthorized persons. The back consists of plate-glass 

 doors through which all working parts may be readily inspected. 

 The face of the actuator carries the various dials which indicate 



FIG. 138. Lombard Governor Actuator. Mississippi River 

 Power Company. 



speed of turbines, gate opening of turbine gates, pressure on the 

 accumulator system, and back pressure, if any. There are also 

 provided hand wheels controlling the main throttle of the gov- 

 ernor system, throttle for the relay valve system and a hydraulic 

 hand control. The central hand wheel controls an adjustable 

 gate-setting device by means of which the maximum amount 

 of turbine gate opening may be regulated at the will of the 

 operator. 



