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Flanged T rail (also called T-section) is the name for flat bottomed rail used in North America. Iron-strapped wooden rails were used on all American railways until 1831. Col. Robert L. Stevens, the President of the Camden and Amboy Railroad, conceived the idea that an all-iron rail would be better suited for building a railroad. There were no ...
In the 1830s Robert L. Stevens invented the flanged 'tee' rail (actually a distorted I beam), which had a flat bottom and required no chair; a similar design was the contemporary bridge rail (of inverted U section with a bottom flange and laid on longitudinal sleepers); these rails were initially nailed directly to the sleeper. [4]
It replaced the cast-iron edge rails that had been introduced in England in 1789, which were made without flanges; instead, flanges were placed on the wheels. (The flanged T rail was introduced in England in 1836 by engineer Charles B. Vignoles (1793-1875), therefore the term " Vignoles rails " came into use in Europe ).
Section of timber track from a 16th-century gold mine in Transylvania.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]
A flanged wheel on a locomotive. Both trams and trains have flanged steel wheels with a horizontal section transferring the vehicle weight to the rail and a vertical flange "inboard" to guide the vehicle along the rail using its inside edge.
The traditional form of grooved rail is the girder guard section illustrated below. This rail is a modified form of flanged rail and requires a special mounting for weight transfer and gauge stabilisation. If the weight is carried by the roadway subsurface, steel ties are needed at regular intervals to maintain the gauge.