Combined manual and automatic route control system for railroads
United States Patent 2775689

Inventors:
Pascoe, Frank T.
Publication Date:
12/25/1956
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Assignee:
WESTINGHOUSE AIR BRAKE CO
Primary Class:
Other Classes:
246/124, 104/26.100
International Classes:
B61L25/04; B61L25/00
US Patent References:
2184544Train describer system
2194352Car classification system for railroads
2255142Interlocking system for railroads
2520838Emergency control apparatus for gentralized traffic control systems
2576038Centralized traffic control system for the code control of interlocked switches and signals
2591036Block indicator for centralized traffic control systems
2592704Centralized traffic control system of the code type for the control of interlocked track switches and railway signals
2670434Train describer system