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Railway interlocking is of British origin, where numerous patents were granted. In June 1856, John Saxby received the first patent for interlocking switches and signals. [2] [3]: 23–24 In 1868, Saxby (of Saxby & Farmer) [4] was awarded a patent for what is known today in North America as “preliminary latch locking”.
If the rail is held so that it cannot expand at all, then there is no limit on the length of rail that can be handled. (The expansive force in a one-foot length of rail at a certain temperature is the same as in a mile or 100 mile length of rail.) Early continuous welded rail was installed in limited lengths only because of technological ...
"Flitch" originally referred to a slab of bacon, which was cut into strips lengthwise. [1] Similarly, a wooden beam was flitched by cutting it lengthwise; one half was then rotated 180 degrees both longitudinally and laterally to ensure that any defects were separated.
He was a fellow of the American Institute of Electrical Engineers and of the Institute of Radio Engineers, and was known as an expert in high-voltage insulators and fittings. His work on transmitting antennas included both military and civilian projects.
Glock (German:; stylized as GLOCK) is a brand of polymer-framed, short-recoil-operated, striker-fired, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H.
This has since been adopted for the Network Rail New Measurement Train, due to its all-over yellow livery. [53] Also occasionally used to describe the High Speed Train. [54] Formation The group of rail vehicles making up a train, or more commonly a group of locomotives connected together for multiple-unit (MU) operation [32] [failed ...
The two sleepers adjacent to a joint may be 12 inches (305 mm) wide where the formation is soft or the traffic is heavy and fast. Sleepers are mostly spaced 2 ft 7 in (0.79 m) apart (centre-to-centre) but are closer adjacent to fishplated rail joints where the spacing sequences are as follows with the spacing at the fishplate highlighted.
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.