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 340
opposite todies that are fixed in a vertical frame or stock, and closed by aloaded lever to one fixed distance. In tapping the nut, it is fixed inthe place before occupied by the dies, and the spindle then used, isbored up to receive the shank of the tap, which is fixed by a sidescrew. This machine… … 336 SCREW-CUTTING TOOLS. is an instrument of most extensive use, and it would indeed almostappear as if every available construction had been tried, with ageneral tendency to foster the cutting, and to expunge the surfacefriction or rubbing action; by the excess of which latter, the laborof work is…
Metal-work · Electrometallurgy · Metallurgy
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