The book Power Railway Signalling, By H. Raynar Wilson was written by author H Raynar Wilson Here you can read free online of Power Railway Signalling, By H. Raynar Wilson book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Power Railway Signalling, By H. Raynar Wilson a good or bad book?
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In the foreground of iig. 474 a ground disc signal is to be seen, and the magnet for operating such a signal will be observed. In fig. 482 is given another view of such a signal. The disc, when pulled off, makes a quarter revolution. This is done by the long lever a moving from right to left. On the top of the lever is fixed a roller which bears against the side of the hollow base b of the signal and causes it to revolve. The other end of this lever is fixed to a shaft d seen at the foot of the... signal, and at the other end of the shaft d is fixed the lever coupled to the magnet (seen in fig. 4/4)- The lever is part of a two arm crank, the other arm e being coupled to the switch for reducing the current for holding off purposes. This is carried in a case at the side of the signal. Siemens and Hahkc's System. Particulars of the various installations of this " All- Electric " system are recorded in Chapter XVIII. They are all on the Continent, and chiefly in Germany and Austria, and it was to comply with the traffic conditions of the rail- ways in these countries that the system was primarily de- signed.
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