Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 471
whichwould retain them in the sand but for the cmplovment of these and analogous contrivances. It willnow be readilv understood that if, in Fig. 3123, the parts shaded obliquely were separate, therewould be no difficulty in removing first the upper half of the flask, then the false cores, after… … thing, when the pattern is made in two parts in the manner represented. The entire model is firstknocked into the side A, the sand is cut away to the inner margin of the pattern, which terminatesupon the dotted line a, and the side A of the mould is then well dusted; a layer of sand is nowthrown…
Mechanical engineering -- Dictionaries
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