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 369
arge master-tap measured at the bottom of the thread the sameas the Wank cylinder to be screwed. The master-taps m, were usedin cutting up the rectangular dies required in the apparatus shownin Fig. 465, and now to be described. 6. On the parallel bed of a lathe, were fitted two standards… … the winch, to carry the latter to the end of the bed. The bed hadalso an accurate slide plate s s, running freely upon it, the slideplate had two tails which passed beside the head 7i,and at the otherend, a projection through which was made a transverse rectangularmortise for the dies, the one end…
Metal-work · Electrometallurgy · Metallurgy
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