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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 196

An illustration from 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, leaf 196
lers.E is the pulley and belt; A is the bench; H is a weight which is usedonly when the machine is worked by a crank. The operation by steamis as follows: the rollers, L and M, are in constant motion, the mandril,K, is taken out from the three rollers, and the edge of the sheet, C,to be formed, is… … K, is brought in contact with L and M; the three rollers, togetherwith the mandril, are revolved, and the sheet C, is drawn in andformed closely about the mandril; the foot is then removed from G,which allows the roller, B, to drop down, and permits the mandril, K,to be taken out and the…

Metal-work · Electrometallurgy · Metallurgy

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More pictures from 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 ...

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