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General Railway Signal was one of the 30 stocks when the Dow Jones Industrial Average [3] was expanded from a 20-stock average on October 1, 1928. It was replaced in the DJIA by Liggett & Myers on July 18, 1930. In 1965, General Signal Corporation (GSX) was created with the intent to diversify into areas other than railway signaling.
The signal box provided a dry, climate-controlled space for the complex interlocking mechanics and also the signalman. The raised design of most signal boxes (which gave rise to the term "tower" in North America) also provided the signalman with a good view of the railway under his control. The first use of a signal box was by the London ...
Alternatively, the key may be attached to the train staff for the section of running line containing the entrance to the siding. [5] [6] At manually-worked level crossings remote from signal boxes, the key to the gates can only be removed for use when the signals for the running line are locked at danger. [3]
A mechanical lever frame inside the signal box at Knockcroghery in Ireland Waterloo station A signalbox, LSWR (Howden, Boys' Book of Locomotives, 1907). Mechanical railway signalling installations rely on lever frames for their operation to interlock the signals, track locks [1] and points to allow the safe operation of trains in the area the signals control.
In the simplest case with three signal boxes on a stretch of line without junctions, the central of the three boxes will receive a request for a train to be accepted, the signaller will set any relevant points (turnouts) and signals and signal acceptance, and then request acceptance by the next signal box along the line.
The ultimate solution to the costly and imprecise train order system was developed by the General Railway Signal company as their trademarked "Centralized Traffic Control" technology. Its first installation in 1927 was on a 40-mile stretch of the New York Central Railroad between Stanley, Toledo and Berwick, Ohio , with the CTC control machine ...
The Westinghouse Brake & Signal Company Ltd was a British manufacturer of railroad signs. Founded by George Westinghouse , it was registered as "Westinghouse Brake Company" in 1881. [ 2 ] [ 1 ] The company reorganised in 1920, associating with Evans O'Donnell, and Saxby and Farmer which merged to form the "Westinghouse Brake & Saxby Signal ...
Pages relating to railway signals and signal-related devices, technology and terminology. ... Railway signalling control (9 P) Railway signalling manufacturers (25 P ...