A GOVERNOR FOR TELEPHONE DIALS 



, —WEIGHT 



1273 



Fig. 5 — Fly-bar type governor. 



friction about the pivots aids the centrifugal force in pressing the studs 

 against the case. 



EQUATIONS OF MOTION 



In deriving the general equations of motion for a governor, two as- 

 sumptions are made concerning the action. During the interval of time 

 that the go^'ernor is approaching the critical velocity when contact of 

 the friction surfaces first occurs, the motion is assumed to be that of a 

 simple fly-wheel, constantly accelerating. The angular velocity of the 

 governor during the time from rest to the critical velocity, wo , is then 

 given by 



9!l 

 I 



(1) 



where G = applied torque 



t' = time from start of motion 



/ = moment of inertia of the governor assembly about the shaft 



