Virginia Electric and Power Co. has constructed safety gates to prevent motorists from driving into open drawbridge on interurban line, which have been constructed for use at Tanners Creek drawbridge near Norfolk, Va.; construction cost is low; counterweights are used.
Drawbridge safety gates
Elec. Traction
Electric Traction ; 25 , n 5
1929
1 Fig.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1911
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Automatic interlocking for drawbridge
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