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 269
ion; as they lie on a chord instead of a radius, thelongest pieces may therefore be cut without interference from thejoint, and the cutters have the further advantage of meeting at amuch smaller angle than if fitted radially. ^ The portable punching and shearing machine shown in front andside… … This machine stands upon a base of a triangular form, and has infront a strong chamfer slide, which is reciprocated in a vertical line,by an eccentric that is concealed from view, it being immediatelybehind the slide, and upon the same axis, as the eccentric is thetoothed wheel. The pinion that…
Metal-work · Electrometallurgy · Metallurgy
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