The Effect of Unbalanced Verge Torques, Acceleration Friction Torques, and Verge-Starwheel Material Upon the Running Rates of a Certain Type of Time Delay Mechanism

摘要

Three factors not hitherto considered will effect the running rate of a certain type of time delay mechanism. (1) If the verge is not balanced, when it is accelerated an unbalanced torque is set up. Under extreme conditions of acceleration and unbalance the running rate would not be changed by more than a few percent. The mechanism will run faster if the unbalanced torque is applied to trailing side of verge, slower for torque on leading side, at least until certain jamming values of torque are reached. (2) Friction has been neglected in our previous reports. As the mechanism accelerates this friction torque is increased. There was no agreement between theory and experiment. All experimental results indicate an increase in the running rate as friction torque increases up to the jamming point. (3) If the material of the verge and starwheel is changed, the running rate will change, but probably not more than 5% from the value for brass. (Author)