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 448
The large wheel A, Fig. 530, is propelled by a weight suspendedfrom the roof by a cord which winds round its barrel, the same ascommon clock-work. The circumference is studded with small pinswhich catch the arm B, moving it in a downward direction, and con-sequently moving the arm C in a forward…
Metal-work · Electrometallurgy · Metallurgy
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