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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 ...
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.
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 complex housed the Taylor Signal Company/General Railway Signal Company until 1907, when operations were moved to Rochester, New York. Afterwards, it housed a number of manufacturing companies including the Century Telephone Construction Company, General Drop Forge Company, Curtiss Aeroplane and Motor Company , and Lippard-Stewart Motor Car ...
On these lines the clearance of the controlled branch entry signal is the driver's sole authority to enter the branch, and once the train has passed that signal, the interlocking will hold it at 'danger' (and the signal cannot be cleared a subsequent time) until the branch service train, on its return journey has sequentially operated two track ...
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]
Railway signalling control (9 P) Railway signalling manufacturers (25 P) S. Signal boxes (1 C, 4 P) ... Institution of Railway Signal Engineers; J. Jack (baboon) ...