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 268
ide, and hastwo pairs of rectangular cutters of hardened steel, which may beshifted to bring the four edges of all of them successively into action. Boiler makers have great use for powerful shears for cutting plateiron from \ to |, and sometimes f inch thick; and the next stage oftheir work is to… … machine ; and as it sometimes happens the boiler makers yard is ata distance from the general factory, it then becomes necessary towork the shears by hand with a winch handle, and which is effectedin the manner shown in Fig. 278, by the introduction of only onewheel and pinion. The wheel is fixed…
Metal-work · Electrometallurgy · Metallurgy
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