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 510
64 HAWKINS ELECTRICITY If run too fast, centrifugal force will cause the articles to cling tcthe sides. Steel Ball Burnishing Barrels.—Burnishing with steelballs is done both on small articles preparatory to plating andalso on articles that have been plated and require a highlyburnished finish.… … Fig. 4,573.—Hanson and Van Winkle tumbling barrel for wet grinding or polishing. It isintended for sand and water grinding, washing out core sand, etc., and is adapted for brasscastings. The barrel is provided with a gland for connecting a water pipe to supply aconstant flow of water. adapted for…
Electrical engineering
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