. The Street railway journal . various portions of the out- side walls. The arresters are mounted on either side of thesteel framework in the center of the building, and the groundconnections all run to a single ground lead, consisting of 51^square feet of copper plate buried in the ground betweenlayers of crushed coke. The arresters are of the Westing-house low-equivalent type, mounted on marble slabs, whichin turn are carried upon porcelain insulators. The outgoing cables on each side are anchored on a strainpole after leaving the racks upon the sides of the building,which in themselves are
. The Street railway journal . various portions of the out- side walls. The arresters are mounted on either side of thesteel framework in the center of the building, and the groundconnections all run to a single ground lead, consisting of 51^square feet of copper plate buried in the ground betweenlayers of crushed coke. The arresters are of the Westing-house low-equivalent type, mounted on marble slabs, whichin turn are carried upon porcelain insulators. The outgoing cables on each side are anchored on a strainpole after leaving the racks upon the sides of the building,which in themselves are not intended to carry the longitud-inal stresses of the overhead cables. The openings in the side of the house through which thecables run, are 18 ins. square, enclosed by two glass platesYi in. thick, and separated 5 ins. with 23/2-in. holes in thecehters, through which the cable passes without touching theglass. A thin disk of brass, 2^ ins. in diameter, is attachedto each wire midway between the glass plates, and thus pre-. FIG. -ARRESTER HOUSE AT DUNTON AND ADJACENTSTRAIN POLE vents the direct access of rain or snow through the straight-line insulators are used for supporting thebare wires inside of the building. A house similar to the foregoing is located at Duriton. wherethe branch transmission line running eastward from Wood-haven is changed from conduit to overhead design of this house and the arrangements of the appar-atus inside it are identical with the one above described, butwith capacity for six circuits instead of eight. An illustrationof this house is shown in Fig. 7. At the drawbridge channels in Jamaica Bay, three housesare provided to shelter similar apparatus. Each of these con-sists of a- steel framework covered with expanded metal andconcrete side walls, and a corrugated copper roof resting upona pile foundation. The method of entrance of wires is similarto that above described, and the strains of the overhead lineare tak
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
