. American engineer and railroad journal . ation at the recent convention is ^^..^[p;^^^ ^j, 7^^!, uja- P^^^- ** ^^^ ^^^^ ^5 •^ given in abstract as follows: n d s In order to determine the value and success of the tonnage —j^ = Tractive force in of ratine; locomotives in comparison with other methods of making up trains, a circular was sent out, under date of Where p = Mean available pressure In pounds per square inch. October 5, 1SH7, asking for definite information on this point. d = Diameter of cylinder in inches. Fortv-three roads in the TTnited States. Canada and Mexico. s
. American engineer and railroad journal . ation at the recent convention is ^^..^[p;^^^ ^j, 7^^!, uja- P^^^- ** ^^^ ^^^^ ^5 •^ given in abstract as follows: n d s In order to determine the value and success of the tonnage —j^ = Tractive force in of ratine; locomotives in comparison with other methods of making up trains, a circular was sent out, under date of Where p = Mean available pressure In pounds per square inch. October 5, 1SH7, asking for definite information on this point. d = Diameter of cylinder in inches. Fortv-three roads in the TTnited States. Canada and Mexico. s = Stroke In inches, operating over 66,000 miles of track, reported that they were D = Diameter of driving wheels in inches. 278 AMERICAN ENGINEER, CAR BUILDER -k !^; iK KnK;S™.= ._«„ j.™ S;lLcnm?Uee^a%1 vearvizrth^^Umes the total cylindervolume for^rate area and 200 times for heating surface, ,n HE^irfe^tu-r ^ i^Lirhfve ^<fror bL.|3^^ ^rrb Sm-^nt^sss. ^h^^^^^^xgi;:! IT^X^ieO X 6^=2.^0 V = pounds water evaporated per hour. 3 ./ :..|||i|.|ii^H»iilliliu;iiilH!ml^lat,^/7j- »»» a.»,r *.«» i-* ■• Revoliilions per No. 2, 1898 Report. from and at 212 degrees, where V = total cylinder volum* in ^FromFormula 4 (page 227), by substituting X for cut-ort andY for revolutions, we have :V>X^2xyx .284 x x \.ib x bu «2,880 V or VxXx2xYx .284 X X X 60 = 2,880 V or X Y = 2 X .m X X X 60 - ^•3^ which Is the equation of an equilateral hyperbola. TiHirram No 2 shows this 1 ne marked A—B, m whicn tne oidilates >^ts x X^shnf tht values assumed for this •^Sv^ii^.^: ^^:^ j^si^risTi;^ &fcomse,^li^lcrecesin proportions of locomotives and valve^^TTe^^asrerM^L^nTs-^-CormiU^^-ln recommended forP d= s freight engines, jj- .26 W, P being the boiler pressure, or about 21 per cent, without such apparatus
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
