. Public works . that is, it isdesigned to maintain the arc in the same point in rela-tion to the globe throughout theburning life. The carbon holdersare operated by means of a pair ofseries solenoids and an current is switched on and offby means of a switch located in thebase of the column. White flamingarc carbons are used, giving a milkwhite light of high candle-powerburning 100 hours per trim. Onlyone new carbon is needed in trim-ming the lamp, as the stub of thelower or positive carbon is used forthe upper or negative of the nexttrim. The carbon is % inch indiameter and 14 in
. Public works . that is, it isdesigned to maintain the arc in the same point in rela-tion to the globe throughout theburning life. The carbon holdersare operated by means of a pair ofseries solenoids and an current is switched on and offby means of a switch located in thebase of the column. White flamingarc carbons are used, giving a milkwhite light of high candle-powerburning 100 hours per trim. Onlyone new carbon is needed in trim-ming the lamp, as the stub of thelower or positive carbon is used forthe upper or negative of the nexttrim. The carbon is % inch indiameter and 14 inches long. The standards for supporting theselamps, which were purchased fromthe Union Metal ManufacturingCompany, of Canton, O., are pressedmetal shafts with fluted design sup-ported by substantial cast iron bases,CLEVELANDS NEW (he whole being given a bronze finish, LIGHT STANDARD, ^j^^ ^^^^^ ^j^^f^ ^^^ ^^^^ ^^^ ,^^dg in separate units. The base is fastened to theground bv steel anchor rods, and the three units.
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Keywords: ., bookcentury1800, bookdecade1890, bookidpublicworks3, bookyear1896
