The Mechanical Handling and Storing of Material

648 THE MECHANICAL HANDLING OF MATERIAL gas engine, erected in a small engine-house at the end of the building opposite to that in which is installed the gas engine driving the coal-handling plant. Coal - handling Plant at the Nuremberg Gasworks.— This plant is on similar lines to that at the Darmstadt Gasworks, but in this instance two Bradley conveyors are used, with a capacity of from 45 to 50 tons per hour. The coal wagons here discharge their load into hoppers (see Fig. 911). The large coal is then con- veyed to the coal-breaker, after the “ smut ” has been sifted out. Having left the breaker, it is de- posited in one of the conveyors. The advantage of having two con- veyors is obvious, as in the first Fig. 911. Coal Wagon Discharging its Load. place two railway trucks can be discharged at almost the same time, and further, one of the con- veyors can be used for taking coal from the store to the retort-house, while the other is receiving coal. Having the conveyor in duplicate is also a great safeguard against breakdowns. A section through the installa- tion is shown in Fig. 912. Fig. 913 shows a section through the coal stores. In both views the band conveyors at the top and the reciprocating conveyor beneath the silo bottoms can be seen. Fig. 914 gives a general plan of this complete installation.