Track: A Complete Manual of Maintenance of Way, According to the Latest and Best Practice of Leading American Railroads

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Engineering News Publishing Company, 1886 - Railroad tracks - 111 pages
 

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Page 53 - These neckties are made from £xl| stock in dies which complete the four bends in two operations and one heat . In spring frogs the spring rail is part of the main track and lying, as it does, close to the frog point, gives the wheels rolling over it an even and unbroken bearing, the same as by ordinary rail; such a frog is very much easier on rolling stock than the rigid frog, and since its life is dependent on the severity of the pounding, it is consequently more durable, both in point of wear...
Page 54 - ... measurement ; hence more care is necessary in the erection of same. The general consturction crossing frog is similar to that of the frogs already described, the angles usually determining the detail, and they are made bolted or plated according to preference. When the angle of a crossing is large or over 45° it is common practice to have an inner rail running all around the crossing to serve as a guard rail, and to give extra stiffness, separated from the main line by fillers of cast iron or...
Page 54 - ... two operations and one heat . In spring frogs the spring rail is part of the main track and lying, as it does, close to the frog point, gives the wheels rolling over it an even and unbroken bearing, the same as by ordinary rail; such a frog is very much easier on rolling stock than the rigid frog, and since its life is dependent on the severity of the pounding, it is consequently more durable, both in point of wear and ability to remain in surface. Spring frogs are therefore recommended for main...
Page 49 - ... perfect fit of bolt and better alignment. In the case of spring frog we drill separate the spring rail and drill in form the point, castings and wing rail, this method of drilling I believe is in use in most of the larger plants. The same general idea is followed in crossing work where practicable. At present frogs which are always made of steel rail held together by a variety of devices may be divided into two classes, "rigid", in which the tongue or point and wings are rigidly connected, and...
Page 93 - T elevated on a road 4 ft. 8^ in. wide, on a curve of 400 ft. radius, to allow for a speed of 30 mi. per hr. 3. A moving train meets a resistance due to friction on the rails and to resistance of...
Page x - True to Pattern, sound, solid, free from blowholes, and of unequaled strength. Stronger, and more durable than iron forgings in any position or for any service whatever.
Page 54 - ... large or over 45° it is common practice to have an inner rail running all around the crossing to serve as a guard rail, and to give extra stiffness, separated from the main line by fillers of cast iron or steel; but as the angle decreases, in order to economize rail, this guard is not always used. As the angle approaches 90° the wear of the frogs and the jolt consequently increases, and on account of this increased hammering received from two directions the life of a crossing frog is much less...
Page 94 - To ensure smooth running, especially for trains at fast speed, the elevation must commence back on the straight line, and continue gradually until the curve is reached. The following table shows how...
Page 54 - ... and toad separately, but must be sure that when they are assembled into crossing form that the gauge and center line distance from vertex to vertex should be for all practical purposes exact to measurement ; hence more care is necessary in the erection of same. The general consturction crossing frog is similar to that of the frogs already described, the angles usually determining the detail, and they are made bolted or plated according to preference. When the angle of a crossing is large or over...
Page x - SEND FOR CIRCULARS AND PRICES TO Chester Steel Castings Co., Works : CHESTER, PA. Office, 407 Library St., PHILADELPHIA, PA.

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