Figs. 233 to 237. Each of the two casting conveyors is about 125 ft. long, and consists of 260 moulds. The moulds travel upwards at an incline of 9° , and are carried over sprocket wheels at each end. The' conveyor travels at such a rate as to give each mould ten minutes to pass from end to end. This allows the iron sufficient time to solidify before reaching the other terminal.