. The Street railway journal . of the trolley wouldbe loose. The catenary construction pro-vides a practically level trolley with nosudden bends at the insulators, as isfound with the ordinary suspension, apoint which is of great advantage to fast-running cars. Thetrolley wire is suspended 18 ft. above the top of the rail. Where the tracks are in the streets the poles are set on thesides of the streets and the trolley is suspended from span the construction is the same as along the privateright of way. The overhead material for the entire line con-struction was supplied by the
. The Street railway journal . of the trolley wouldbe loose. The catenary construction pro-vides a practically level trolley with nosudden bends at the insulators, as isfound with the ordinary suspension, apoint which is of great advantage to fast-running cars. Thetrolley wire is suspended 18 ft. above the top of the rail. Where the tracks are in the streets the poles are set on thesides of the streets and the trolley is suspended from span the construction is the same as along the privateright of way. The overhead material for the entire line con-struction was supplied by the Westinghousc Electric & Manu- 3°2 STREET RAILWAY JOURNAL. [Vol. XXV. No. 7. facturing Company, according to the design of Sargent &Lundy, consulting engineers. HIGH-VOLTAGE LINESThe system of electrical distribution requires transformerNations about 10 miles or 12 miles apart, and the alternatingcurrent is transmitted from the power house to these trans-former stations at 33,000 volts, single-phase, 25 cycles per sec-. MOTOR AND GEAR CASE COMPLETE ond, and is reduced and fed into the trolley at a potential of3300 volts. The high-tension current is carried from the cen-tral power station to the transformer stations on No. 4 barecopper wires, two wires to each transformer station. Theymake a complete circuit and permit the placing of the circuitbreakers and switches at the central power house, so as to doaway with the necessity of attendants at the transformer sta-tions. The high-tension linesare carried on a separateline of poles set near theedge of the right of way,provided with carefully andstrongly constructed cross-arms and equipped withlarge porcelain insulators oniron pins. TELEPHONE LINES The entire system is pro-vided with two metallic cir-cuit (four copper wires)telephone lines, one of whichis used exclusively by thetrain despatches The otherline is used for general com-pany business. Each car isprovided with a telephone,by means of which the con-ductor can talk with t
Size: 2013px × 1241px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
