(under subclass 178) Subject matter having control devices whose actuation is initiated by an electric circuit on the train normally closed through the track-rails and which is broken by the passage of the train over one or more insulated rail-joints placed at the point of initiation and which are electrically bridged or connected when the cab signal or train-control mechanism is not to be actuated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
48, 57 and 75, for the insulated-rail-joint feature.
167, and all subclasses mentioned in the search notes thereto appended, for cab and control features.
