Instructions for adjustment of electric lever locks and mechanical locking to insure operating margin; circuit design to reduce number of line wires; centralized traffic control; instructions for inspecting and testing mechanical locking of interlocking machine. (See also - n 1 Mar 13 1939 p 97-107)
Committee V -- Contracts and instructions
Assn Am Railroads -- Proc (Signal Sec)
Association of American Railroads -- Meeting ; 1939 Contracts
1939
5 pages
Conference paper
English
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Committee V -- Contracts and instructions
Engineering Index Backfile | 1935
Committee V -- Contracts and instructions
Engineering Index Backfile | 1944
Committee V -- Contracts and instructions
Engineering Index Backfile | 1941
Committee V -- Contracts and instructions
Engineering Index Backfile | 1937
Committee V -- Contracts and instructions
Engineering Index Backfile | 1938