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 212
s to be annealed. Figs. 213 and 214 explain the transition or conversion from thefirst sweep a, to the second sweep b; the black lines represent themetal after a circles of blows have been given. Figure 214 showsthe narrow edge of the raising-hammer, in the act of descendingupon the centre of the… … a b n p 208 WORKS IN SHEET METAL, MADE BY RAISING. larly gathered in, then 3, 4, 5, and so on, up to the edge. Now theartifice consists in making the intervals both of the great sweeps, a,b, c, Fig. 211, and of the little waves 1, 2, 3, of Fig. 214, as largeas practicable, provided, they do not…
Metal-work · Electrometallurgy · Metallurgy
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