The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 215
Fig. .—Double Firo-cock, used at the British Museum. Fig. 7 is a double firecock, as Inid down at the British Museum.This has a very good delivery, and is certain to be always tight, ifwell made, as the pressure of the water forces the key into the barrel; 178 THE CIVIL ENGINEER ANDIARCHITECTS… … Fig. S.—Fire Engine, used by the London Fire Brigade.Longitudinal section,—with the Levers turned up for tnivelling. this also rentJers the cock somewhat difficult to be opened and shut, ifthe pressure be great; but as a lever of any length may be used, andthe kpy, from its perpeudiculnr position,…
Architecture · Civil engineering · Science
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