The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 130
was fixed a toothed rack. In the centre was fixed a verticalpost, with diagonal braces, carrying a centre point, around which thetravelling crane worked, with its hoisting crab on the top. At thefoot of each leg was inserted a toothed wheel, working into the rack,so that by means of winch handles… … Fig. 6,—Tackle used In elevating the pipps of the • Stand,pipe ut the East London Waler-ivorkj, Fifr, ,—Revolving Scaftoliling ustJ at the new Houses of Purliiuneut. 108 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [April, M.Pierre Jouknet described J Syslem of Scaffolding, employedat Paris,/or the…
Architecture · Civil engineering · Science
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