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 275
and sockets are cast, whether of uniform or irregular bore,see Fie 812; e has two rectangular cores crossing each other at right angles; and / is the cap of adouble-acting pump, the core for wliich is shown in section by the white part of Fig. 822, the shadedportions being the metal; the great… … In addition to the cores used for making holes and mortises, much ingenious contrivance is displayedin the cores employed for other works of every-day occurrence, the undercut parts of which wc uldretain them in the sand but for the employment of these and analogous contrivances. It will now…
Mechanical engineering · Mechanics · Engineering
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