The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 419
a loose one is provided, and heldin its place by a rod or )irop beneath it, which is attached to apiston witliin a steam cylinder. This loose bottom is held up by acatch while the hammer is in operation; but when the lower blocklias to be removed from the mould, the catch is withdrawn, and thenext… … 1819.] THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 360 formeil on the top, upon the lower block being forced from themouhl; the pressure of steam forces up the loose bottom, and,when up, it is secured by the catch, as before, and the hammer setto work to form another block. The blocks, after beiug…
Architecture · Civil engineering · Science
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