Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 366
Fig. 254.—Elec-tric dry cell. Carbon and Salammoniac Paste Fig. 255.—Details of electricdry cell. dry cell. When the use of electric cells reached a point whereportable batteries were required, a form was demanded fromwhich the solution could not be lost accidentally. The firstelectric cells in…
Heating · Lighting · Plumbing
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