. American engineer and railroad journal . urNo. 2 Admiralty type main feed pumps, of ample size to sup-ply the whole of the boilers in full power, and four double-cylinder double-acting bilge and fire pumps of No. 1 Ad-miralty tvpe. A pump for pumping out the drain tank, andtwo ventilating* fans t; ft. in diameter, each driven by a sepa-rate steam engine. In the boiler compartment there are eightfans 5 ft. 6 in. in diameter, each with its separate engine, forsupplying the forced draft for the boilers, and also four double-cylinder double-acting auxiliary feed pumps of No. 2 Ad-miralty type. T
. American engineer and railroad journal . urNo. 2 Admiralty type main feed pumps, of ample size to sup-ply the whole of the boilers in full power, and four double-cylinder double-acting bilge and fire pumps of No. 1 Ad-miralty tvpe. A pump for pumping out the drain tank, andtwo ventilating* fans t; ft. in diameter, each driven by a sepa-rate steam engine. In the boiler compartment there are eightfans 5 ft. 6 in. in diameter, each with its separate engine, forsupplying the forced draft for the boilers, and also four double-cylinder double-acting auxiliary feed pumps of No. 2 Ad-miralty type. The weight of the anchors and chain cables is130 tons, and if the cables were laid out in a single line theywould extend about one mile. The tolal weight of metalwork treated in the construction is upward of 9,000 tons, andthe wages expenditure in Birkenhead represents considerablyover £220,000, which is, of course, exclusive of labor in manu-facture of armor plates, forgings, and a variety of fittingsfrom sub-contractors.—The CROMWELLS SMOKE-BOX. to one another. The crank, thrust, and propeller-shafts areall hollow, an 8 in. hole being bored through their entirelength, and they are each forged from a solid steel thrust-blocks and collars are of cast steel. The latter are lined with white metal, and are of the ordinary type. Thescrew propellers are four-bladed, the blades and bosses being of gun-metal. Steam is supplied bj eighl single-ended cylin-drical boilers, working at. loo lbs. pressure persquare inch, and being 15 ft. 4 in. in diameter and !) ft. 4 , each boiler having f air corrugated furnaces 3 ft. 4 in. in diameter. The total grate surface is 7|o sq. ft,, and thetotal heating surface 20,174 aq. ft. For the purpose of shut-ting oil each combustion chamber from tin- others, and also for regulating the draft in same, separate dampers are fittedin the passage from each through tin smoke-boxes, and arranged to work the same conveni
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
