(under subclass 314) Subject matter including a switch, usually point or tongue, which is forced open, generally against springs or counterweights, by direct contact of each wheel of a train trailing through the switch and which flies back or is automatically moved back after the passage of same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
282+, 284, and appropriate indented subclasses, for switches of the trailing- setting type connected with switch- stands.
290+, for trailing-fly-back type connected with switch-stands.
SEE OR SEARCH CLASS
267, Spring Devices, appropriate subclasses, for details of compression and tension devices.
