The Mechanical Handling and Storing of Material

38o THE MECHANICAL HANDLING OF MATERIAL Another class of loading machine dispenses with the coke ramp altogether. Such machines are exposed to heavy wear and tear, not only from the coke itself, but also from the great heat and the corrosion from the acid vapours, so that their construction is connected with many difficulties. As steel or wrought iron cannot resist these Fig. 536. Coke Loader of the Coppée Company. a. The elevator, b. The trench in front of the hearth, c. Girders carrying the overhanging receiving end. d and e. Electro-motors for elevator and for travelling respectively, f. Bar screen receiving coke from elevator, g. Delivery shoot, h. Bunker for small coke. conditions, cast iron is used as much as possible in the building of these machines, and especially for parts where the extra weight is of less consequence. A machine of such a type was supplied about 1900 by the Wellman-Seaver Co. for the Lackawanna Steel Co.’s Works Fig. 537. The Wellman-Seaver Coke Loader. at Buffalo, U.S.A., to serve ten batteries with 940 ovens (Fig. 537). Two longitu- dinal walls are built in front of the ovens, and on these are placed open sheet-iron receptacles a (two for each battery) con- nected with the ovens by a platform b. Each receptacle holds a charge of coke, which is quenched from the platform, the surplus water draining away through the perforated bottoms into a gutter between the two walls, and through drain c. The track for the coke trucks is beyond the outer wall, and is served by a portable crane, provided with a running head d for Two rigid arms e hook at f into eyes g on tilting and discharging the receptacles. the receptacle, the hooks being locked by an electro-magnet /?, so as to prevent a release before the proper time; at the opposite side the two hooks and wire ropes hold the receptacle, the hooks being likewise locked by the electro-magnet z, so that they cannot work loose; the ropes are protected by two telescopic tubes k against the vapours, as well as to prevent these whipping when wound on drum I. Two motors manipulated