Changeover completed, at Vulcan, Ill, in Nov 1934 at cost of $ 1450; it is estimated that total savings will amount to 25% of total investment; General Railway Signal Co full-wave rectifiers, with 220-v primary installed; at each of six operated signals, battery of 16 primary cells is used for operating motor and holding coil; electric lamps replace oil lamps.
A.C. -- Primary system for automatic interlocking on Missouri Pacific
Ry Signaling
Railway Signaling ; 28 , n 5
1935
2 pages
Article (Journal)
English
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