The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 133
■which it can be moved on rails, to suit the article suspended from theshears. The introduction of the knee joint is also a very importantimprovement, as it gives to the dies a variable motion, and causes thegreatest force to be exerted at the proper time, viz., at the closing oflie joint and the…
Architecture · Civil engineering · Science
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