Installation of what is claimed to be latest development in a. c. track-circuiting work consists of 14 single-rail track circuits of condenser-feed type, using two-element vane relays, and six siding tracks with indication only.
Track circuit developments on the underground railways
Ry. Gaz
Railway Gazette and Railway News ; 38 , n 15
1923
2 pages
3 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
The track construction of underground railways
Engineering Index Backfile | 1906
"Safety" and "operating" developments on the underground railways
Engineering Index Backfile | 1922
Tema Archive | 1981
SAGE Publications | 1990
|Electrical equipment of track on the underground railways of London
Engineering Index Backfile | 1927
|