Description and explanation of operation of interlocking circuits; circuits classified as to their use with respect to various units with which they are used and as they have been applied to various types of interlocking, i.e., mechanical, electromechanical, electropneumatic, electric, automatic, and electric without mechanical locking.
American railway signaling principles and practices: Chapter XX -- Interlocking circuits
American Railway Signaling Principles Practices: Chapter XX -- Interlocking Circuits
1942
164 pages
Book
English
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