US PATENT SUBCLASS 314 / 19
.~.~.~ Feed-regulating mechanism, switch-actuated type

Current as of: June, 1999
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314 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: CONSUMABLE ELECTRODES

10  DF  WTH AUTOMATIC SHUNT AND/OR CUTOUT {2}
17  DF  .~ Switch-operated type {1}
18  DF  .~.~ Current- and/or potential-actuated switch {1}
19.~.~.~ Feed-regulating mechanism, switch-actuated type

DEFINITION

Classification: 314/19

(under subclass 18) Subject matter having the feed regulating mechanism operated by electro-responsive means, such as an electromagnet, and having the switch actuated by the movement of the feed regulating mechanism.

(1) Note. Continue the search in subclasses 12, 14 and 16 of this class.

(2) Note. In most of the devices in this subclass, the feed regulating mechanism is given an abnormal movement when the electrodes are either consumed or fail to feed, and the abnormal movement is utilized to operate the switch.

(3) Note. This subclass does not include discharge devices having the switch operated by means of a cam, projection, detent or other means carried by the electrode rod or electrode supporting means, or some other part of the discharge device which moves in relation to the movement of the electrode, so that the switch is operated only when the electrode has been moved to a predetermined position. Discharge devices having only this type of switch operation are in subclass 17.