Features of electric locking scheme for spring switch; standard rod with plunger operated by motor-driven mechanism; automatic or remote control; track plan and circuit diagram for control of lock.
Electric lock for spring switch
Ry Signaling
Railway Signaling ; 25 , n 1
1932
2 pages
Article (Journal)
English
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Engineering Index Backfile | 1933
|SAE Technical Papers | 1955