Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 494
of the common pile-engine. The smallscrew-point opens the way for the conical part,and the larger screw not only draws the piledo^^Ti, but, when it has penetrated to a suflScientdepth, affords an extended base for preventingfurther depression. Thus several feet of timbeimust be saved, and the…
Mechanical engineering · Mechanics · Engineering
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