The practical metal-worker's assistant : comprising metallurgic chemistry, the arts of working all metals and alloys, forging of iron and steel, hardening and tempering, melting and mixing, casting and founding, works in sheet metal, the processes dependent on the ductility of the metals, soldering, and the most improved processes, and tools employed by metal-workers, with the application of the art of electro-metallurgy to manufacturing processes, collected from original sources, and from the works of Holtzapffel, Bergeron, Leupold, Plumier, Napier, Scoffern, Clay, Fairbairn, and others (1872)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 259
ely for lateral holes in the parts of the castings buried beneath the general surface of the mould, and which are explained by the Figs. 158 to 161. Thus 158 repre¬ sents the finished casting, 159 the model of the same, 160 the ap¬ pearance of the bottom flask or drag when the pattern is first re¬… … The core print a, would deliver from the sand and leave the cavity at a, Fig. 160, to be afterwards filled by the core shown black in Fig. 161, the same as formerly explained at Fig. 143, p. 245. But the core print, b, Fig. 159, (which has reference to the black stud b, Fig. 161,) would tear away…
Metal-work · Electrometallurgy · Metallurgy
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