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 372
place the screwentirely beyond the correctional process. This cannot be the casewhen the thread is first marked out with the change wheels, insteadof the dies. Fig. 470 is an engine lathe, manufactured at the Lowell MachineShop, Lowell, Massachusetts. Its swing is 50 inches over the sills,and 32… … One very important application of the screw, is to the graduationof mathematical scales, the screw is then employed to move a plat-form, which slides very freely, and carries the scale to be graduated;and the swing frame for the knife or diamond point is attached tosome fixed part of the framing of…
Metal-work · Electrometallurgy · Metallurgy
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