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
kes frequent use of flasks which divide inthree or four parts; this is done in many cases simply to increasethe depth of the contained space; in which case when wooden flaskswere employed, they admitted of being temporarily fixed togetherby dogs, or large iron staples, driven a little way into the… … A casting, such as Fig. 123, which represents the top of a sliding-rest for a lathe, might be moulded in a very deep two-part flask, ifthe parting were made upon the dotted line a, a; but there wouldbe very great risk of tearing down the mould in drawing out thepattern, and from the depth, there…
Metal-work · Electrometallurgy · Metallurgy
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