Spring switch with new type of automatic mechanical facing point lock mechanism installed by Pere Marquette at west end of passing track at Michigan City, Ind; 112-1b No. 16 turnout installed, using 30-ft special reinforced switch points.
Spring switch on Pere Marquette
Ry Signaling
Railway Signaling ; 34 , n 3
1941
3 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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