Modern Gasworks Practice

THE MECHANICAL HANDLING OF MATERIALS 325 from each tier of retorts, and the skip (travelling on two tracks, the divergence of which causes it slowly to tilt as it reaches the top of the iricline) is elevated by means of two steel wire ropes which travel round large guide pulleys at the top end. The coke is thus discharged through convenient apertures in the side wall of the building, when it falls upon the quenching bench and is sprayed with water. When cooled, it Fio. 239.— Travelling Skip Conveyob, showing Quenching Platform. runs clirect into wagons for transport. The machine carries two totally enclosed dust-proof motors, one for travelling and the other for lioisting; tliese operations can be effected simultaneously if so desired. An automatic cut-out switch is provided top and bottom in order to prevent overrunning of the skip, so that the attendant has merely to start the latter and it stops automatically at the right place. It is claimed that with. this machine mucli time is saved, for a normal retort mäy be