. The Street railway journal . e officialssay that they expect to be able to cover the distance fromButler to Pittsburg in time that will rival the schedules ofthe railroad trains. May 4, 1907.] STREET RAILWAY JOURNAL. 797 NON-ARCING LIGHTNING ARRESTER NEW CARS FOR THE CAMDEN INTERSTATE COMPANY The manufacturer of the Shaw Hghtning arrester, theLord Electric Company, of New York and Boston, in thatdevice has made use of conducting or semi-conductingparts interposed by a series of spark gaps of higher elec-trical resistivity to offer a path from line to earth of largecapacity and relatively low
. The Street railway journal . e officialssay that they expect to be able to cover the distance fromButler to Pittsburg in time that will rival the schedules ofthe railroad trains. May 4, 1907.] STREET RAILWAY JOURNAL. 797 NON-ARCING LIGHTNING ARRESTER NEW CARS FOR THE CAMDEN INTERSTATE COMPANY The manufacturer of the Shaw Hghtning arrester, theLord Electric Company, of New York and Boston, in thatdevice has made use of conducting or semi-conductingparts interposed by a series of spark gaps of higher elec-trical resistivity to offer a path from line to earth of largecapacity and relatively low static resistance. The com-panys patents cover the basic principles of a series ofpartially conducting discs or rings separated by laminarinsulating material in such manner as to give the easiestpath for a discharge of a static character and present animpenetrable barrier to the dynamic line current of normalvoltage. The portions of the arrester serving- as static low re-sistance conductors consist of rings resembling carbon,. MODEL A IN WOODEN CASE which are treated so as to make them conductors in a classby themselves and yet different from what is commonlyknown as non-arcing material. Each ring maintains anequal spacing between its periphery and that of the nextsucceeding ring in the series. The rings are separated fromeach other by mica washers, whose superiority over airor other forms of spark gaps lies in its ability to carrystatic current by reason of electrolytic capacity, largesurface area, non-absorptive nature, and its high in-sulating qualities, which prevent the passage of a dynamiccurrent. The combination of non-arcing rings and mica discs aremounted on porcelain arbors having strong dielectricproperties. The arbors are inserted into the bore of therings and discs, leaving the peripheries exposed for theeasy transmission of static discharges over large arresters are mounted in porcelain in porcelain hous-ings. For voltages of 1000 and under, the porc
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
