Identifier: americanengine70newy (find matches)
Title: American engineer and railroad journal
Year: 1893 (1890s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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h category require as yet no attention. The plate iron gussets have experienced a loss estimated at morethan 18 per cent, of their weight. Nevertheless, as they were orig-inally very heavy and the oxidation is chiefly outside the lines ofrivets, it is to be presumed that these parts have a life equal tothat of the frame as a whole. Probable Life.—All these precautions will likely contributeto the prolongation, without accidents, of the lite of these carsthrough a period equal to that already passed since their construc-tion, tnus assuring them a total existence of about 50 years. It appears certain that this life can be considerably increased by exercising care to prevent the action of rust. From an examination of cars constructed in later times, it isfound that the interior surfaces of the underframes commence to losetheir paint at the end of three years of service. It is only then thatrust begins to be produced. To avoid the rust, then, the fram^ 176 AMERICAN ENGINEER, CAR BUILDER
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-:w-.-i-l • Fig. 4.-Elevation, Quarter Plan, End View and Sections of Members of Cars Built Entirely of Iron, by the Eastern Railway of France in 1874. AND RAILROAD JOURNAL. 177 should be repainted at least once in three years. This operation,with at least two coats on the iron, will cost about 17 francs (83.40)including material, labor and all general expenses. CARS ENTIKELT OF IRON. We have examined the cars U 25,909 and U 23,962 (Fig. 4), whichwere built in 1874, and are consequently 21 years old. Underframes.—The iron sections entering into the construc-tion of the underframes have lost about four per cent, of theirweight by oxidation. The corrosion is of much the same natureas in the frames built in 1875 and noted above. The examination ofindividual sections reveals no cause for immediate apprehension. •Superstructure or Box.—The loss from the iron plates formingthe sides and ends of the box is only 1.8 per cent., and is thereforevery small. The loss from the special iron

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