. The railroad and engineering journal . ever can be moved after the switch-lever has been moved,only if the position of the sector permits it ; that is to say,if the connection .\ has been moved from its normal posi-tion ; in other words, if the cams have properly wedgedfast the switch-rails. In the opposite case, the connect-ing-rod A, which follows the movement of the cams, willnot complete its course, and it will be impossible to re-verse the locking-lever in the cabin, in such a way that,not only is the signalman warned, but he will also be un- camsAA to enter between the switch-rails and
. The railroad and engineering journal . ever can be moved after the switch-lever has been moved,only if the position of the sector permits it ; that is to say,if the connection .\ has been moved from its normal posi-tion ; in other words, if the cams have properly wedgedfast the switch-rails. In the opposite case, the connect-ing-rod A, which follows the movement of the cams, willnot complete its course, and it will be impossible to re-verse the locking-lever in the cabin, in such a way that,not only is the signalman warned, but he will also be un- camsAA to enter between the switch-rails and themain rail, or withdraw from them. These cams. A A-, are shaped in such a way as to fitexactly between the switch-rail and the main rail, or towedge them together according to their position. In thisway we obtain the absolute wedgmg fast of each of theswitch-rails in any position of the switch. This arrange-ment, securing an entirely distinct locking, has given , Engineer of the Mediterranean Railroad, in Italy, ri ■• 1. MOGUL LOCOMOTIVE, NORWEGIAN STATE RAILROADS. able to move the signals which would authorize the move-ment of a train over a half-open switch ; this is whatwould happen should the connection between the cabinand the switch be broken. It can, then, be said that this apparatus gives a con-trol over the working of the levers which secures alldesirable safety without being more expensive than thedouble transmission type of switch-locks. XIII.—THE HARRISON SWITCH-LOCK. Under a similar heading to the apparatus just describedwill come the system of locking, or rather of wedging, the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
