A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lift bridge with automatic electric span leveling control feature
Alignment control is feature of Chicago, Rock Island and Pacific's new double-track at Joliet, Ill; synchronous-tie control method automatically regulates movement of both ends of lift span, thereby preventing tie-ups caused by "binding".
Lift bridge with automatic electric span leveling control feature
Alignment control is feature of Chicago, Rock Island and Pacific's new double-track at Joliet, Ill; synchronous-tie control method automatically regulates movement of both ends of lift span, thereby preventing tie-ups caused by "binding".
Lift bridge with automatic electric span leveling control feature
Ry Elec Engr
1933
3 pages
Article (Journal)
English
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| Engineering Index Backfile | 1935
Equipment for leveling large-span light truss bridge surface
| European Patent Office | 2021