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Plate rail was an early type of rail and had an 'L' cross-section in which the flange kept an unflanged wheel on the track. The flanged rail has seen a minor revival in the 1950s, as guide bars , with the Paris Métro ( Rubber-tyred metro or French Métro sur pneus ) and more recently as the Guided bus .
The wheel flange presses against the side of the curved rail [citation needed] so the "contact point" between rail and wheel moves a few millimeters outwards, making the effective diameter of the outer wheel temporarily larger, and equally opposite: the effective diameter of the inner wheel effectively becomes temporarily smaller.
A railway wheel's tread and flange and its relationship to the load-bearing rail. The running surface of most train wheels is conical, which serves as the primary means of keeping the train aligned with the track while in motion. The wheels are fixed on an axle, and when rounding a curve the mass of the train pushes the wheelset towards the ...
The wagons were guided by the pronounced flange on the wooden wheels, and the narrow gauge of 480 mm (18 + 7 ⁄ 8 in) allowed the points to be altered by swinging the single switch rail. [1] Contemporary illustration of guided truck used in 16th-century mines in Germany Reconstruction of flat wooden track for transporting silver ore; guidance ...
Horsecars ran on the upper, outer part as edgerail, with the wheel flanges on the inside. The edge rail formed an outside flange for a broad foot which allowed wagons to pass through the unmade streets. That combination necessitated a unique, broader gauge of 4 ft 10 + 7 ⁄ 8 in (1,495 mm) known as the Toronto gauge. [5]
Grooved rail, used when track is laid in places traversed by other vehicles or pedestrians. A grooved rail, groove rail, or girder rail is a special rail with a groove designed for tramway or railway track in pavement or grassed surfaces (grassed track or track in a lawn). The head on the right-hand side of the rail bears the vehicle's weight.
It also helps a train steer around a curve, keeping the wheel flanges from pressing the rails, minimizing friction and wear. The measurement of the difference in elevation between the outer rail and the inner rail is called cant in most countries. Sometime the cant is measured in term of angle instead of height difference. [12]
A tie plate, baseplate or sole plate is a steel plate for centering and reinforcing the attachment point on the rail tracks between a flanged T rail and a railroad tie. The tie plate increases bearing area and holds the rail to correct gauge. It is fastened to wooden ties by means of spikes or bolts through holes in the plate.