Historical review; various types of operating mechanisms; instructions for maintaining and testing signals; tables of operating characteristics of several signals: testing procedure; working diagrams are illustrated; list of 255 questions covering contents of pamphlet.
Semaphore signals
Am Ry Signaling Principles Practices
1930
71 pages
87 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Uniformity in semaphore signals
Engineering Index Backfile | 1896
Koyl parabolic semaphore railroad signals
Engineering Index Backfile | 1889
British Library Conference Proceedings | 2000
|Semaphore signals for road traffic control
Engineering Index Backfile | 1929
A new method of operating semaphore signals
Engineering Index Backfile | 1927