. The Street railway journal . ibility of opera-tion, the former representing the standardadopted by the builders. The units havesolid couplings between engine and gen-erator, and operate in parallel on the sta-tion load in precisely the same manner asan ordinary steam-driven unit. The famil-iar Beau de Rochas or four-stroke cycle isused, which, with the tandem arrangement,gives a power impulse with each succes-sive stroke of the engine. The cylindersare 21 ins. in diameter by 30-in. 150 r. p. m. (be engine is rated at 470bhp., with a maximum of 520 bhp., giving35 per cent overload c
. The Street railway journal . ibility of opera-tion, the former representing the standardadopted by the builders. The units havesolid couplings between engine and gen-erator, and operate in parallel on the sta-tion load in precisely the same manner asan ordinary steam-driven unit. The famil-iar Beau de Rochas or four-stroke cycle isused, which, with the tandem arrangement,gives a power impulse with each succes-sive stroke of the engine. The cylindersare 21 ins. in diameter by 30-in. 150 r. p. m. (be engine is rated at 470bhp., with a maximum of 520 bhp., giving35 per cent overload capacity to the gen-erator. A few months prior to the opening ofthe interurban system a 300-hp verticaltype Westinghouse gas engine was in-stalled to drive a rotary converter, the ma-chine first serving the d. c. city road, and 272 STREET RAILWAY JOURNAL. [Vol. XXVII. No. 7. later the a. c. interurban road until the main power unitscould be placed into service. This rotary is nowemployed to good advantage for supplying the city. TANGENT CONSTRUCTION OF CATENARY
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
