File:Elementary treatise on electric batteries (1880) (14591408448).jpg

Identifier: elementarytreati00niau (find matches)
Title: Elementary treatise on electric batteries
Year: 1880 (1880s)
Authors: Niaudet, Alfred, 1835-1883. (from old catalog) Fishback, L. M., (from old catalog) tr
Subjects: Electric batteries
Publisher: New York, J. Wiley & sons
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
Fig. 52 ances the principal current, as shown by the galvanome-ter, which marks no deflection. If the principal current is sufficient to decomposewater, the above equality is never reached, and the free-ing of gases corresponds indefinitely to a circulation ofthe current made manifest by the galvanometer. If, instead of a single secondary element, several areplaced in the circuit, polarization will be divided betweenthem ; each one taken separately will furnish a secondarycurrent after being a moment under the influence of theprincipal current, but the sum of the electro-motive forces 246 VARIOUS BATTERIES. of these secondary currents can never become superior tothat of the polarizing current. But it* these secondary cells be charged separately andthen joined in intensity, the total current might have a
Text Appearing After Image:
w1Mtrgt Fig. 53. considerable energy and be superior to that of the princi-pal current by which they have been successively ex-cited. VARIOUS BATTERIES. 247 All this will be made clearer by the following detailedstudy of secondary cells having electrodes of lead. As early as 1859 Mr. Plante showed that lead was themost favorable metal for use in secondary batteries, andhe has since that time accumulated many proofs of thissuperiority. Figs. 52 and 53 show the element as con-structed to-day. In a tall vessel made of glass, of rubber,or of ebonite are placed two sheets of lead rolled to-gether parallel to each other, and kept apart by twostrips of rubber rolled with them; these two sheets areimmersed in a solution containing one tenth of sulphuricacid. The vessel is closed by a sealed stopper in whichthere is a hole through which the liquid is introducedand extracted, and through which the gases evolved dur-ing the charging may pass off. The apparatus is cappedby an ebonite cover furnis

Note About Images