Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 229
Pig. 113. dInfrevilles Wasteless Zinc. The form of copper element shown in Fig. 112 is bet-ter when heavy currents are not needed. It is a copperribbon 4 feet long and J4 an inch wide, coiled like a … Fig. 114. Using Up Old Zincs. clock spring. Zincs shaped like Fig. 113 are used until,the prongs are all eaten off. A new one is then put in HYDROMETER 231 service and the old one jammed into the bottom of thenew one as shown in Fig. 114. These zincs are hung from a spring clip shown in Fig.115,…
Electricity
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