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 346
y numerous,have in general a guide-screw from which the traverse of the tool isderived, and the illustration Fig. 447, selected from an old workpublished in 1741, is not only one of the earliest, but also of themost exact of this kind; and it exhibits likewise the primitive appli-cation of change… … 342 SCREW-CUTTING TOOLS. attached to the arbor, the clamp at the end of which holds the axisof the fusee to be cut, the opposite extremity is retained by thecentre; the fusee and arbor constitute one piece, and are turned bythe winch handle. The lower wheel is put in movement by theupper, and turns…
Metal-work · Electrometallurgy · Metallurgy
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