Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 494
the timber even in ordinary ground, withthe force of the common pile-engine. The smallsc: . ens tb. way for the conical part, and the larger Bcrew not only draws the piledown, but, when it has penetrated to a sufficientdepth, i.. ■ f..r preventing further depression. Thus several feet of timho mu-…
Mechanical engineering
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