Description of all-delay interlocking installed at Saginaw, Mich, to replace one of very early Model-2, General Railway Signal Co, allelectric interlockings installed in 1903; machine is equipped with toggle switch and small green entrance-exit route lamps to give leverman opportunity to check track line-up before clearing signal.
New interlocking on pere Marquette
Ry Signaling
Railway Signaling ; 39 , n 10
1946
3 pages
Aufsatz (Zeitschrift)
Englisch
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Pere Marquette installs C.T.C.
Engineering Index Backfile | 1947
Pere Marquette installs C.T.C.
Engineering Index Backfile | 1946
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