US PATENT SUBCLASS 246 / 158
.~.~.~.~ Switch and lock movements

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

131  DF  INTERLOCKING {8}
143  DF  .~ Manual actuation {3}
147  DF  .~.~ Mechanical locking {5}
155  DF  .~.~.~ Rod-saving devices {2}
158.~.~.~.~ Switch and lock movements

DEFINITION

Classification: 246/158

(under subclass 155) Subject matter having rod-saving devices whereby the movement of one lever both actuates the switch and also either locks it, indicates or detects its motion, shifts a detector or locking bar, or performs both of these additional functions.

(1) Note. This subclass includes most of the so-called "detectors" and "point-locks" of English inter locking practice.