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 374
arthreads, and which indeed constitute by far the largest number ofall the screws employed; screws of angular and square threads willbe then compared, The comparative sections, Figs. 471 to 474, represent screws ofthe same diameters, and in all of which the depth of the thread isequal to the width… … Various measures of the screws which require little further expla-nation are subjoined in a tabular form; and the relative degrees ofstrength possessed by each screw under three different points ofview, are added.24 370 SCREW-CUTTING TOOLS. Fig. Fig. Fig. Fig. MEASURES AND RELATIVE STRENGTHS OF THE…
Metal-work · Electrometallurgy · Metallurgy
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