The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 325
is, of Wynyalt-street, Clerkenwell, Middlesex, for ImpTOvemenls in producing orna-mental surfaces.—Granted November 12, 1S4G; Enrolled May 12,1847. This invention consists of improvements in depositing metal, bythe employment of a bath in the following manner, as shown in fig. 1.The bath consists… … Fig I. Fig. For electrotype plates the bath is to be filled with a solution of1411). blue vitriol dissolved in 7 quarts of water, and when it is cooledput on the plate B, with some pieces of vitriol laid on the top ; thenfill the tubes D with a preparation consisting of 5 pints of water, i…
Architecture · Civil engineering · Science
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