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 279
the manufacture of stamped works, orsuch as are figured between dies, of which an example is describedat length in page 211. Compared with a fly-press of equal power,the force is less expensive in its first construction, but it is also lessaccurate in its performance.18 274 PUNCHES. Fig. 302 is a… … wide, thickened at the ends and bent into the form represented ; theone extremity is tapped to receive a coarse screw, the end of which isformed as a cylindrical pin, or punch, that is sometimes made in thesolid with the screw, but more usually as a hardened steel pluginserted in a hole in the…
Metal-work · Electrometallurgy · Metallurgy
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