Problem of closing entrances of garages, depots and similar buildings offers considerable scope for designer; closures now available are divided into four main classes; rolling shutter, sliding and folding doors, shutter gate, and lattice gate; recent development is installation equipped to afford automatic opening on approach of vehicle; brief outlines given of how several automatic closures operate. (See also - n 248 Aug 1949 p 285-87)
Closing openings
Bus Coach
Bus and Coach ; 21 , n 250
1949
4 pages
Aufsatz (Zeitschrift)
Englisch
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