(under the class definition) Systems in which highway-crossing signals, gates, and mine-doors are actuated or controlled from the moving train or vehicle by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111, 260, 293, and 473, and appropriate indented subclasses for signal structure.
221, and the appropriate indented subclasses, for the electric actuation of switches and signals other than those used at highway-crossing.
246+, and all subclasses mentioned in the search notes appended thereto, for various types of circuit-controllers.
261, and 272, for gate structure.
SEE OR SEARCH CLASS
49, Movable or Removable Closures, appropriate subclasses, for closures (gates) and closure-actuating mechanism.
