. The railroad and engineering journal . composed of an alloy of84 copper, 16 tin, and 2 zinc. The bearings in the screwalleys are of copper 86, tin 14, zinc 2. Stufling-boxglands, etc., are of copper 88, tin I3, zinc z. The boiler 310 THE RAILROAD AND I luly, 1891. fittings are of copper 90, tin 10, zinc 2. Brass tubing, socalled, when used, is of copper 94, tin 6, zinc 2. Theanti-friction metal is copper 4, tin 96, antimony 8. The valve gear is so arranged that the cut-off in thehigh-pressure cylinder is variable between 25 and 74 percent., intermediate cylinder between 25 and 70 per cent.,a


. The railroad and engineering journal . composed of an alloy of84 copper, 16 tin, and 2 zinc. The bearings in the screwalleys are of copper 86, tin 14, zinc 2. Stufling-boxglands, etc., are of copper 88, tin I3, zinc z. The boiler 310 THE RAILROAD AND I luly, 1891. fittings are of copper 90, tin 10, zinc 2. Brass tubing, socalled, when used, is of copper 94, tin 6, zinc 2. Theanti-friction metal is copper 4, tin 96, antimony 8. The valve gear is so arranged that the cut-off in thehigh-pressure cylinder is variable between 25 and 74 percent., intermediate cylinder between 25 and 70 per cent.,and in the low-pressure between 37 and 79 per cent. A NEW PLATE GIRDER BRIDGE. The drawings given herewith show a double-trackplate-girder bridge recently built by the Passaic RollingMill Company, of Palerson, N. J., for the Delaware, Lack-awanna & Western Railioad. In these figs, i and 2 are s-- ■ i ^ ►^s^ If 1 X ^ V /■? 1. \ > s ^ ^ -^ - P-feaaa;~ 1 ^ °=^=fc ^ >i _ ^> X X ^\ <3 X Qi X ^^ J. L= •^ i_. r>;S /o|°o o°|j^


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887