Railway Appliances; A Description of Details of Railway Construction Including a Short Notice of Railway Rolling Stock

Railway Appliances; A Description of Details of Railway Construction Including a Short Notice of Railway Rolling Stock

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ...will notify to B that the train has left; B will acknowledge the signal and will at the same time give some sort of signal in the signal box at A, which will notify to A that no other train must be sent until further orders. This last operation is called 'blocking the line.' As soon as the train has arrived at B, the signalman there will notify A of its arrival, and will 'take off' the block signal and give 'line clear.' Precisely the same series of signals passes between every signalman from A to E, excepting only that at the intermediate signalling stations between A and E the signalman may in some cases send on the warning signal which he receives to one or perhaps two stations in advance, so as to avoid any necessity of checking the speed of such trains as have to pass the stations in question without stopping at them. Now supposing that a train breaks down or is delayed between c and D (fig. H5), and that a train is ready to start at A. c will have asked permission from D to dispatch the train subsequently disabled, and as soon as this has A B C A D E I 1 4--1 1 Fig. us. been done D will have blocked the line at c. This block cannot be taken off by c, or indeed by anyone but D, who will not do so until the disabled or delayed train reaches and passes the signal box at D. Meantime, supposing that the second train is travelling between A and c. When it arrives at c the engine-driver will find the signal at 'danger, ' in obedience to the orders of D, and will consequently pull up at c. c has previously blocked the line at b, when warned that the second train has passed B, and has thus protected the second train from being run into by a succeeding train starting from A. In this way, in the case of a break-down of a train between c and D, if...show more

Product details

  • Paperback | 84 pages
  • 189 x 246 x 4mm | 168g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236595475
  • 9781236595478