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 403
hich may varyin height according to the power which it is wished to obtain. Amembranous tube, formed of the gullet of an ox, is hung in the centreby a collar, and a circular copper plate, resting upon a rim, is placednear the top of the cylinder, and in this is suspended, by a woodencross-bar, a… … portions of the solid salt are placed upon the upper copper plate,which is perforated like a colander, for the purpose of keeping thesolution always in the state of saturation. The internal tube isfilled with the same acid mixture without the copper. A tube ofporous earthenware may be substituted…
Metal-work · Electrometallurgy · Metallurgy
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