A new design of power locking frame whereby one lever is used to set up each route, signalman is given a visible indication of all that occurs, conflicting movements are rendered impossible and separate point levers are dispensed with entirely.
One-lever route signaling
Ry. Gaz
Railway Gazette and Railway News ; 35 , n 18
1921
6 pages
9 Figs.
Aufsatz (Zeitschrift)
Englisch
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Route-lever signaling, Winchester, Great Western Railway
Engineering Index Backfile | 1923