(under subclass 27) Subject matter having fluid-pressure means used for actuating and controlling roadway-signals, detents, and other track devices, irrespective of the means employed upon the train for actuating the cab and control mechanism.
SEE OR SEARCH THIS CLASS, SUBCLASS:
93+, 116, 139, 142, 257+, and 361, for fluid-pressure actuation of signals.
140, 141, 258, and 259, for electrically-controlled, for fluid pressure actuation of signals.
257, see search notes appended thereto, for fluid-pressure structure.
