US PATENT SUBCLASS 246 / 60
.~.~.~.~ Distant-signal control

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

20  DF  BLOCK-SIGNAL SYSTEMS {4}
27  DF  .~ Automatic {5}
28 R  DF  .~.~ Electric {18}
58  DF  .~.~.~ Direct-current, normally open, track circuit {2}
60.~.~.~.~ Distant-signal control

DEFINITION

Classification: 246/60

(under subclass 58) Means are provided for the control of distant or three-position signals or for the control of a single signal from a plurality of blocks.

SEE OR SEARCH THIS CLASS, SUBCLASS:

26, 34+, 41+, 58+, 95, 98, 128+, and 130, for track-circuit systems.

35+, 38, 39, 44+, and 46+, for systems of distant-signal control.