Improvements in and relating to Automatic Derailers

10,051. Sloderbeck, M. C. April 29. De-railing and re-railing devices; ground levers.-A spring-actuated de-railer for railways and tramways is permanently pivoted to the track, and may be locked in the operative and inoperative positions. The de - railer 7, Fig. 1, pivoted at 6 to the track, has a lip 16 which lies over the rail, a face 16 to raise the wheel and run it off the rail, and a flange 14 against which the wheel bears, in normal running, to displace the de-railer against the spring 8. The de - railer is connected by a built-up connecting-rod 19 with a crank 18' connected by bevel-wheels 22, 23, 24 with a shaft 25 to which is secured a lever 26. A vertical shaft 29, secured to the bevel-wheel 23, carries a signal and a lamp, which are given a half-revolution at each operation of the derailer. The de-railer may be locked in position by securing the lever 26 in a lock 28, Figs. 3 and 5. The lock comprises a bolt 46, which can be held across the jaws of the lock during shunting operations by a weighted lever 45, and a sliding bolt 49, pressed across the slot by a spring 48, which is used when the apparatus is left unattended. The bolt 49 can be withdrawn by means of a key fitting in a slot 50. It can also be held in the withdrawn position by a catch 53, releasable by a pedal 52. In order to lock the de-railer out of action, the lever 26 is forced into a lock 27 against the action of a spring 38, and is held by a weighted hook 34, Fig. 8, a treadle 37 being provided to release the hook 34, whereupon the lever is thrown over to the latch 28 by the spring. On a tramway the operating-bar 19 may be moved by raising the lid 55, Fig. 15, of a casing 54, a cable 56 connecting the lid to a bell-crank lever pivoted to the bar 19.