(under subclass 178) Subject matter having control devices whose actuation is initiated by breaking a normally closed circuit placed on the train, which contains a circuit-controller actuated by contact with track-trips at the point of initiation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167, and all subclasses mentioned in the search notes appended thereto, for cab and control features.
246, and all subclasses mentioned in the search notes appended thereto, for various types of circuit-controllers.