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 165
in a two-part flask; it would be inverted, and the parting would bemade upon the line, x. The prints for the four holes a a, would beplaced in the top flask, and those for the great apertures or panels 160 CASTING AND FOUNDING. d, would be made in a core-box of the express form, and as thick asthe… … By the same method, a mortise wheel, or one with spaces aroundits edge, as at m m, Fig. 121, to be filled with wooden cogs, mightbe made with a series of core-prints, as at c, brought up flush withthe parting of the mould; if every print were filled with a core suchas Fig. 122, made in an…
Metal-work · Electrometallurgy · Metallurgy
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