The practical metal-worker's assistant : containing 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, and others ... (1851)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 164
orks ; namely for lateral holes in the partsof the castings buried beneath the general surface of the mould, andwhich are explained by the Figs. 115 to 118. Thus 115 representsthe finished casting, 116 the model of the same, 117 the appearanceof the bottom flask or drag when the pattern is first… … The core print a, would deliver from the sand and leave the cavi-ty at a, Fig. 117, to be afterwards filled by the core shown black inFig. 118, the same as formerly explained at Fig. 99, p. 148. Butthe core print, b, Fig. 116, (which has reference to the black stud b,Fig. 118,) would tear away the…
Metal-work · Electrometallurgy · Metallurgy
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