Mechanical and electric interlocking machines; electric lock; electric motor-switch operating mechanism; circuit controller for movable bridges; electropneumatic-switch-operating mechanism; compensation of pipe lines for operation of mechanical units; rail-locking devices used on interlocked drawbridges.
Committee II -- Interlocking
Assn Am Railroads -- Proc (Signal Sec)
Assn Am Railroads -- Meeting ; 1936 Interlocking
Association of American Railroads -- Proceedings Signal Section ; 33 , n 1 ; p 26-80
1936
55 pages
Conference paper
English
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