. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . receiver sep-arators and thence to the engines. Allthe live steam drips from steam drums,separators and reheating receivers arecarried back to the boilers by the SteamLoop and Holly Gravity Return System. Ingersoll-Sergcant air compressors,each driven by a 50 Westinghouse,500-volt motor, supply compressed air forthe block signal and switching systemused on the road. Early in the concep-tion of the scheme of running trains athigh speed under the rather complex con-ditions here existing, t
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . receiver sep-arators and thence to the engines. Allthe live steam drips from steam drums,separators and reheating receivers arecarried back to the boilers by the SteamLoop and Holly Gravity Return System. Ingersoll-Sergcant air compressors,each driven by a 50 Westinghouse,500-volt motor, supply compressed air forthe block signal and switching systemused on the road. Early in the concep-tion of the scheme of running trains athigh speed under the rather complex con-ditions here existing, the engineers of theBoston Elevated Railway realized that ablock system was necessary, and the West-inghouse electro-pneumatic interlockingsystem, manufactured by the UnionSwitch & Signal Co., of Swissvale, Pa.,was chosen. The elevated road includes some 14miles of track. The switches and signalsare controlled from four switch towersand the automatic block signals are lo-cated at distances of about 800 ft. tower is supplied with indicatorsshowing the approach of trains. The tow- THE. ()BSEKV.\TION C.\R—CANADI.\ RAILWAY. ries as feed-water heaters, receiver ofthe Holly gravity return system and sun-dry piping. The original engine installation con-sisted of two vertical cross-compoundunits of 4,500 each, built by the Prov-idence Engineering Co. The generatorsand flywheels are carried on the shaftsbetween the high pressure and low pres-sure sides. The generators are direct cur-rent machines, rated at 2,700 each. Athird unit which has just been completedconsists of a vertical cross-compound en-gine of about 4,500 , designed andbuilt by the Westinghouse Machine Co.,and installed by Westinghouse, Church,Kerr & Co. The engine, however, differsconsiderably in design and constructionfrom the two engines first installed. Thehigh pressure cylinder is fitted with pop-pet valves for use with superheated steam,which is supplied by superheaters built bythe B
Size: 2578px × 970px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
