The Mechanical Handling and Storing of Material

386 THE MECHANICAL HANDLING OF MATERIAL of the ovens, which may be discharged into any of the railway trucks in waiting by raising the grating A as shown in dotted lines. The agitation the coke receives from the bar screen not only disposes of the breeze, but it loosens the coke lightly, and with a mini- mum of breakage, for the easier access of the quenching water to all parts, and a more uniform cooling. The screenings are delivered at intervals to a classifying plant at the end of the battery. The whole machine can be worked by one man, and is operated by a 35 H.P. motor, a 6 H.P. motor driving the pump. The latest machine which automatically receives, quenches, screens, and delivers the whole charge of an oven into any available truck along the whole line of coke oven, is that of Goodall, and it is at work at the Weardale Steel, Coal, and Coke Co., Spennymoor, as well as at several other large establishments (Figs. 547 and 548). The machine consists of a large iron frame running on eight wheels, on rails placed in the Fig. 54”. Elevation and Cross Section of the Goodall Machine as Manufactured by W. J. Jenkins & Co., Ltd., of Retford. position usually occupied by the bench or quenching floor. It is fitted with motor and gearing to propel it along the rails in either direction, and to revolve the table or coke receptacle, and drive the shaking screen. In the centre of the frame there is a substantial cast-steel footstep bearing, which receives a short vertical spindle. From this axle, leading to the periphery, horizontal girders are fixed which are connected at their extremity by a cast-steel ring having teeth at its lower edge, and forming a large wheel which gears into a pinion on a horizontal shaft. Below this turntable there is a rail bent into a ring-form, which gives the table support and stability, by means of a ring of rollers running on the same. The framework of the table so formed is covered with interchangeable perforated cast-iron plates, so as to form a revolving table 20 ft. diameter to receive a charge of coke; the table is surrounded by plates, which are also lined again with interchangeable cast-iron plates up to the height of 3 ft. There is a slot- like opening, with guide plates, in this outer cylindrical ring on the oven side of the machine, sufficiently large to allow the cake of coke to enter. Directly opposite this