. Il giornale ferroviario di strada. E la pressione di workingsteam essendo 160 libbre per pollice quadrato. Ogni caldaia è dotata di un surriscaldatore di 339 m2 di superficie riscaldante, sufficiente a consentire al vapore prodotto dalla caldaia di ricevere un calore di asupero compreso tra 100 e 120 gradi. F. l'economizzatore è del tipo Claycross. L'acqua di alimentazione può essere prelevata sia dal fiume Avon che dalla rete idrica comunale. Sono presenti due pompe di alimentazione, una a vapore e una a comando elettrico. Il primo è stato costruito da J. P.Hall & Son, ed è del tipo a bassa velocità verticale. La latterè una pompa a tre getti Blake & Knowles, ed è azionata

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. The Street railway journal . e workingsteam pressure being 160 lbs. per square inch. Each boiler isfitted with a superheater having 339 sq. ft. of heating surface, sufficient to allow the steam produced by the boiler to receive asuperheat of from 100 degs. to 120 degs. F. The economizer isof the Claycross type. The feed water can be taken either from the River Avon orfrom the town mains. There are two feed pumps, one steamand one electrically driven. The former was built by J. P.Hall & Son, and is of the vertical slow-speed type. The latteris a Blake & Knowles three-throw pump, and is driven by adirect-current motor. The Hall pump is capable of deliveringfrom 30 gals, to 45 gals, of water per minute, with a steampressure of 150 lbs. per square inch and 100 degs. F. superheatagainst the boiler-working pressure of 160 lbs. The Blake & 372 STREET RAILWAY JOURNAL. [Vol.XXIV. No. 10. Knowles pump has cylinders 5 ins. in diameter with 6-in. stroke, and can drive 2700 gals, of water per hour against the boiler. CARS PASSING HATH CITY market: capable of dealing with 1500 gals, of condensed water per hour, and is fitted in the main exhaust pipe. The latter then passeson to the surface condensers. Coal is conveyed from the railway trucks to the storage binsby screw conveyors, made by the Conveyor & Elevator Com-pany, of Accrington. The bins have a capacity of 50 tons. Aspiral coal conveyor brings the coal from the storage to thefront of each boiler fire grate. A Stothert & Pitt 15-ton electric crane, with a 50-ft. span, traverses the entire length of the engine room. The longitudinaltravel is 175 ft. per minute, the cross-traverse 100 ft. perminute, and the hoist 6l/2 ft. per minute with full load, the totallift being 26 ft. The traveling, hoisting and traversing motorsare 10 hp, 8 hp and 5 hp respectively. The three Yates & Thom horizontal, tandem, single-crank, compound condensing engines have cylinders 15 ins. x 30 ins.in diameter and 36-in. stroke, and Corliss valves. They a

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1880
• booksubjectstreetr
• bookyear1884