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 53
eside whilst the work lies upon the anvil, so that when turned over,the cooling effect of the punch may serve to show the place wherethe tool must be again applied for the completion of the hole; the 48 FORGING IRON AND STEEL. little bit or burr is then driven out, either through the square holein… … ggp^^- 7 45. Fig. 45 shows the ordinary mode of making the square nuts forbolts. A flat bar is first nicked on the sides with the chisel, thenpunched, and the rough nuts if small, are separated and strungupon the end of the poker (a slight round rod bent up at the end),for the convenience of…
Metal-work · Electrometallurgy · Metallurgy
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