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 194
d rubbed over the former diagonally, to bend it at every part; thisis repeated across the other diagonal to flatten the plate; it is after-wards folded round the stick, and .rubbed forcibly down with thehand, as at d, to give it an easy bend approaching to the requiredcurvature. Should the vessel… … Fig. 167 is intended to explain a very simple and useful machine,first employed by the tinmen for rolling up the cylinders for springwindow-blinds, the sides of culinary vessels and similar works, andnow also by the boiler-makers, and others for the strongest plates. Ithas two cylindrical rollers,…
Metal-work · Electrometallurgy · Metallurgy
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