Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 27
s usually found best. When this is goneit is better to clean out the cell, and supply new solution, than to try to re-plenish. Bluestone crystals should not be smaller than a pea nor aslarge as an egg. In good condition the solution at the bottom should be abright blue, changing to water-color… … BATTERIES. 15 odorless, free from naphtha or acid, and non-inflammable under 400° F. Ifoil is not used, dipping the top of the jar in melted paraffin for about aninch, will prevent the salts of the solution from climbing over the edge. Instarting a new battery it is best to short circuit the cells…
Electrical engineering
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