(under the class definition) Subject matter in which initiation of the feeding of an electrode is dependent upon the speed of a motor, the motor being caused to operate in response to some characteristic of the apparatus indicating improper spacing between the discharge electrodes.
(1) Note. Three common types are: (a) The feeding of the electrode depends upon the speed differential between two motors; (b) A motor drives an electrical generator which supplies current to the feed operating means, the motor and the generator being arranged in the system so that the motor must attain some minimum speed before the generator will deliver the requisite energy to initiate the feeding operation; (c) The motor drives a feed responsive device and when the motor attains some predetermined speed, the speed responsive device initiates the electrode feeding operation.
(2) Note. When the motor upon whose speed the initiation of the feeding operation is dependent is an electric motor, the characteristic which varies its speed is most commonly the voltage across the discharge electrodes and/or the current supplied to the discharge electrodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69, for consumable electrode discharge devices wherein the means for supplying power to move the electrodes is a rotary electric motor.
SEE OR SEARCH CLASS 73, Measuring and Testing,
488, for a speed responsive device, per se.
200, Electricity: Circuit Makers and Breakers,
80, for speed responsive electrical switches of general application.
