US PATENT SUBCLASS 246 / 12
.~.~.~ Instruments in series

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

2 R  DF  TRAIN DISPATCHING {7}
7  DF  .~ Train telegraphy or telephony {3}
9  DF  .~.~ Continuous contacts {2}
12.~.~.~ Instruments in series

DEFINITION

Classification: 246/12

(under subclass 9) Systems in which each train has its instruments cut constantly into the line in series with those of other trains or stations.

SEE OR SEARCH CLASS

191, Electricity: Transmission to Vehicles,

11, for structure of the conductor and the collector.