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 948
lock is of cast-iron, in the form of a hollow frustrum of a cone,with a hemispherical bottom. In order to give it the requisite strength, the block is closely hoopedwith wrought-iron over all the conical part, except in the places where it is embraced by the suspensionstraps; for this purpose the…
Mechanical engineering · Mechanics · Engineering
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