Installation of spring switch equipped with mechanical facing-point lock on Pennsylvania Railroad at Duff, Pa; special signal protection; track and signal plan of springswitch layout; trailing operation; hand operation.
Spring switch with lock
Ry Signaling
Railway Signaling ; 26 , n 7 ; p 133-134
1933
2 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.