Railway Engineering, Mechanical and Electrical

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E. & F.N. Spon, limited, 1897 - 562 páginas
 

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Página 30 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 454 - Fig. 91 is composed of lap-welded wrought iron tubes, placed in an inclined position and connected with each other, and with a horizontal steam and water drum, by vertical passages at each end, while a mud drum is connected to the rear and lowest point in the boiler.
Página 260 - But, secondly, sand acts well as a conducting medium for the air expelled from the space filled by the iron, and for the other gases generated by the action of the heat on the blackening and the coal. And, thirdly, it possesses considerable adhesiveness when rammed together, sufficient, indeed, to make it retain its form against the pressure of the melted iron ; and, moreover, it is easily made to conform...
Página 85 - The tractive power of a locomotive is given by — <>> where D = diameter of cylinder in inches. p = mean pressure of steam in cylinders in Ibs. per square inch. L = length of stroke in inches. w = diameter of driving wheel in inches. T = tractive force in Ibs. The tractive power is, however, limited by the adhesion of the locomotive drivers to the rails. In ordinary English weather the adhesion of a locomotive may be taken...
Página 370 - THE WESTINGHOUSE AUTOMATIC BRAKE. The Westinghouse automatic brake is continuous throughout the train, and is operated by compressed air stored in a main reservoir on the engine, and in small reservoirs, one upon each engine, tender, and carriage, all connected by a pipe running the length of the train.
Página 456 - In erecting this boiler, it is suspended entirely independent of the brickwork, from wrought iron girders resting on iron columns. This avoids any straining of the boiler from unequal expansion between it and its enclosing walls, and permits the brickwork to be repaired or removed, if necessary, without in any way disturbing the boiler. All the fixtures are extra heavy and of neat designs.
Página 50 - ... chief centres of trade in Eastern Canada were provided by purchase and construction, to collect and distribute the traffic of the main line; and other branch lines were built in the North-West for the development of the great prairies. " The close of 1885 found the Company, not yet five years old, in possession of no less than 4,315 miles of railway, including the longest continuous line in the world, extending from Quebec and Montreal all the way across the continent to the Pacific Ocean, a...
Página 49 - Company was organized early in 1881, and immediately entered into a contract with the Government to complete the line within ten years. The...
Página 44 - Brassey was one of those truly good and great men who have left their footprints on the sands of time, footprints which perhaps another, some forlorn and shipwrecked brother — or sister — seeing may take heart again.
Página 225 - ... of the road when finished ; it is then thoroughly and repeatedly rolled with the steam roller, all depressions being carefully filled and rolled before the stone is put on. On the bed thus formed and consolidated a layer of...

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