Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 175
wood a sheet ofperforated hard rubber is placed, as shown in Fig 167, which helpsto prevent washing out of the active material. The plate groups are placed in an acid-proof tank, generallyof glass, hard rubber, or of wood lined with lead, and are sup- P05ITIVE STRAP/typei■ ^ CovCross Bar ,… … HaRDHUBBERJAR Fig. 167.—Portable type of lead battery. ported in various ways as shown in Figs. 168 and 169, amplespace being left below the plates for the accumulation of sedi-ment which must not be allowed to short circuit the plates. To minimize leakage of electricity, the tanks are insulated…
Electrical engineering
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