Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 526
:—German silver may be cleaned in thebright dip for brass, or in a preliminary pickle of dilute nitric acid and 3,180 HAWKINS ELECTRICITY water (12 to 1), followed by a dip of equal parts of sulphuric and nitricacids, and then by rinsing in boiling water and drying in sawdust. Usesawdust that… … Figs. 4,602 and 4,603.—Characteristic dis-integration of Munning-Loeb flat anode.The new anode, fig. 4,602 weighed 22Y2lbs., and the stub (fig. 4,603) 2 lbs. 10ounces; waste 11.7 per cent. It shouldbe noted that the waste is considerably-greater with this shape than with a twobar type (figs. 4,596…
Electrical engineering
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