The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 214
r in thecanvas bottom, two circular rings of wash-leather about 2 inches broadare attached to tlie edges of tiie opening in the canvas, so as to con-tract it to 4 inches or 5 inches diameter; the plug being opened, thecistern is placed over it, the wash-leather is pressed down to the sur-face of… … Fig. 4.—Plug, ivlth Slandcock. Fig. 5 is a common single firecock with a round water-way 2J inchesdiameter. * Tile canvas dam is the Invention of Mr. Ilradlcy, for whlcb b wM aWBrded by theSociety of Am with a silver medal,—Ed, C.,E, f( A, Journal,
Architecture · Civil engineering · Science
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