. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lso by substituting di-rect stays in the crown of the fire boxin place of the usual roof bars. Thediameter of the boiler is 63% ins., soas to give satisfactory heating surfaceand steam capacity. The tubes aro2 ins. external diameter through-out, and are of mild steel tubes arc 16 ft. 8 ins. long. Thelire box heating surface is sq. ft. The safety valves are of the doubletype, having 4 valves 4 ins. in di-ameter, with independent springs,which are set for a working pressur
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lso by substituting di-rect stays in the crown of the fire boxin place of the usual roof bars. Thediameter of the boiler is 63% ins., soas to give satisfactory heating surfaceand steam capacity. The tubes aro2 ins. external diameter through-out, and are of mild steel tubes arc 16 ft. 8 ins. long. Thelire box heating surface is sq. ft. The safety valves are of the doubletype, having 4 valves 4 ins. in di-ameter, with independent springs,which are set for a working pressureof 200 lbs. per sq. in. Under test tlieboiler has shown improved steam-ing power, probably due to the sub-stitution of the direct stays for roofbars in crown of fire box, and also toan increased water space between theouter and inner fire box shells. Theengine is equipped with the usualWestinghouse Brake fittings, and hasalso an Ejector and through pipesto enable it to work trains having theVacuum Brake. The form of steamreversing gear used is the Caledonianstandard pattern, which retains the use. RAILWAYdrawing wheels are 78 ins. in diameterand the boiler pressure is 20a lbs. persq. in. The weight in working orderis about 73 tons. Speaking of this locomotive Mr. Mc-intosh says: No trouble has beenspared in increasing the dimensions ofthe bearings, which are for the driv-ing axle is gyi ins. diameter by10% ins. long and for the inter-mediate and trailing, which areconcave journals, 8 ins. diameter inthe center, gyi ins. diameter at theends, and 12 ins. long. The big-end 4 6-U E.\IRESS the reversing lever and following are some of the prin-cipal dimensions, etc.: Boiler—Length of barrcL 17 ft. y% ins.; thick-ness of barrel plates, 21/32 Box Shell—Length outside, 8 ft. 5 ins.;breadth outside at bottom, 4 ft.; depth fromcenter at front, 5 ft.; back, 3 ft. 9 ins.;thickness of plates, sides, H in.; crown, %in.; grate area, 26 sq.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
