The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 35
8/., ond they were not at all injured bythe work they were used upon. The charge for labour, in making lewis-holes, fixing on the casks, and removing the stone three miles, was onlyl.v. Crf. per ton, which included lowering them into their proper places aniltowing back the casks; in short every… … top, where a ring was welded into an eye; into this ring, the chains werefastened, before letting in the lewis, which was done by means of two guiderods of iron, close to the mouth of the jumper-hole; the wedge was theninserted, by means of a pair of long-handled tongs; a punch bar of ironbeing set…
Architecture · Civil engineering · Science
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