US PATENT SUBCLASS 246 / 279
.~.~.~ Manual control


Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
*  DD  .~ Switch stands, automatic {3}
278  DF  .~.~ Facing setting {3}
279.~.~.~ Manual control


DEFINITION

Classification: 246/279

(under subclass 278) Subject matter having switch-actuating mechanism by which a train can enter a siding only when the automatic setting mechanism is held by the switchman in an inoperative position against gravity or springs, which return the switch to its original position when the switchman releases it.

SEE OR SEARCH THIS CLASS, SUBCLASS:

397, for hand-restrained resetting-switch-stands.