The Mechanical Handling and Storing of Material

ROPEWAYS 295 respectively. At the delivery terminus the timber leaves the rope on suitable shunt rails which extend to a ramp where the stems are taken off and rolled down an incline to the river. . Fie. 435 represents a portion of another ropeway installation for conveying timber from forests, erected by the same firm at Oberaudorf in Bavaria. The length of the line is 600 m. (656 yds.), and has a downward gradient of 340 m. (371 yds.). Six journeys are made per hour, each load consisting of about 4 cub. yds. The frontispiece shows a portion of an interesting ropeway installation by Bleicheit, erected at Thio on the east coast of New Caledonia, to convey ore from important nickel mines to a convenient loading station out at sea, the coast being too rugged for ships to approach nearer. Fig. 430. Bucket Carrier with Haulage Rope above the Rail Rope. Fig. 431. Bucket Carrier with Haulage Rope below the Rail Rope. Ropeways Erected by J. Pohlig Mr R. E. Commans has described the construction of a Pohlig ropeway which is at work at the Lake View Gold Mines in Western Australia. This ropeway is em- ployed to transport ore from bins erected alongside the shaft to the top of the 50-head stamp-mill, situated at some dis- tance off on the hillside, to secure the advantage of natural gravitation in dealing with slimes and tailings. The carriers, like most modem appli- ances of this type, are suspended slightly below the centre of gravity, so as to permit of easy tipping and discharge. They are attached to hauling ropes by grips which are thrown in and out of gear automatically, and released at the unloading stations. Rope- ways on this system have been erected with capacities varying from 50 to 2,000 tons per day of ten hours. Sometimes when con- siderable quantities have to be transported a double line is built, although a single line built recently in Lorraine, at Kneuttingen, having a length of about 6 miles, transports some 1,428 tons per day of twenty-four hours, carried over longer distances than this, about 20 different parts of the world. Fig. 436 is a typical example of a long single span, the distance between the supports being 875 yds. The ropeway is that of the Brick and Tile Works, Fnednchssegen, Ems, Germany, the total length of which is 2,363 yds. As already seen, ropeways have been miles and over having been spanned in