The Mechanical Handling and Storing of Material

SELF-EMPTYING RAILWAY WAGONS 5ot and is held by a spring on the raised portion of the apron, and the contents ot the truck are discharged between the sills and inside the rails of the track. The dumping devices are arranged to be operated either by hand or by compressed air, hand dumping being accomplished by means of a wheel at the end. When equipped for pneumatic dumping, an air cylinder is attached to the outside end of the truck in proximity to the hand wheel. A fe.v methods of discharging are shown in Figs. 707, 708, and 709. Ihe truck is 35 ft. 11 in. long over the end sills, 8 ft. 10 in. wide over all, while the extreme height from top of rail is 8 ft. 6 in. The carrying capacity is 40 to 60 tons of ore, and with the load heaped it amounts to about 40 cub. yds. Self-Discharging Ballast Wagon of the Leeds Forge Co., Ltd.— This wagon is arranged to discharge its contents in whatever direction is required, either at one side or the other, or at the centre, or in different directions together, and so that the rate of discharge in any one direction can be regulated and stopped, when required, independently of that in the other directions. An alteration from any one direction to any other may be made during the progress of discharge, or the discharge may be entirely stopped at any or all points before the wagon is empty. Methods of Discharging with the Goodwin Self-Emptying I ruck. An illustration of one of these wagons as supplied to South American and to Indian broad-gauge railways is given in Fig. 710. Similar wagons have been supplied to the Indian metre-gauge railways, and to the South-Eastern and Chatham Railway. The opening and closing of the doors, and regulation of the amount of mateiial discharged, are entirely under the control of the operator standing on the platform of the wagon, so that it can be used for discharging ballast on the line. On the South-Eastern and Chatham Railway a full train load of 133 cub. yds. of ballast was dischaiged in twenty minutes with only three men in attendance, while an ordinary ballast train com- posed of fourteen 7-ton trucks, and holding only 98 cub. yds. of stone, took one hour ten minutes, with 28 men in attendance, to discharge its load on the same piece of road. It will be seen from the illustrations that the operating gear is strong and extremely simple, and is not liable to get out of order. The control can be arranged either from an end platform or from the ground. The diagram also shows how this type of wagon can be constructed with provision for the addition of a flat door to enable it to be used as an ordinary flat-bottomed wagon, and how also, if desired, it may be provided with drop sides and ends to facilitate the loading and unloading of rails, timber, etc. Fig. 711 shows another type of hoppered wagon built, among others, for the Madras