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 287
diate pieces a a, and b b, which latter would necessarily be parallel. In the like manner a pyramidal vessel built upon the same base, would require equal angles for all its sides. It would have been easy to have extended these particulars to numerous other figures, such as the regular geometrical… … Much of that which has been stated, as it will eventually appear, has been partly advanced in elucidation, on the less apparent methods practised in making similar forms out of flat plates, by the process called raising ; this is done with the hammer alone, by stretching some parts of the metal and…
Metal-work · Electrometallurgy · Metallurgy
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
