set in garages where an alternating cur- ever, the purpose of the converter is not to give light, rent only was available, but these electro-mechanical the wall. and so the distance between its metal positive and With alternating current voltages not exceeding 400 combinations are not only costly… … tions of voltage, etc., are such as to make its decades the navy was, unfortunately, obliged, by ill-advised motives of economy, to build operation possible; in other words, the appar- COOPER HEWITT MERCURY CONVERTER FOR CHARGING STORAGE its important drydocks of timber; and al- atus may be left…
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