The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 189
Figure 1. FIRE COCK D … Description.—The Patent Fire-cock consists of a cast-iron boss,A, with aperture of such size as may be required, and flan^jje forconnectiiif^ it with a correspondinfj^ flange on brancli from mainpipe, as represented by dotted lines under fig. 1—tlie u]iper inneredge, a, of the boss being raised and…
Architecture · Civil engineering · Science
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