The practical metal-worker's assistant : comprising metallurgic chemistry, 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, Scoffern, Clay, Fairbairn, and others (1872)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 107
e, on the upper and under surfaces of the one rib at the same time. The drift serves as a temporary anvil ; the other rib is completed in the same manner, and the work is finally closed to its true width upon the anvil, the drift still lying in the mortise. When a thick lump is wanted at the end of… … A piece with three tails, such as Fig. 66, is made from a large square bar ; an elliptical hole is first punched through the bar, and the remainder is split with a chisel, as in Fig. 67, the work at the time being laid upon a soft iron cutting plate in order to shield the chisel from being driven…
Metal-work · Electrometallurgy · Metallurgy
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
