The Mechanical Handling and Storing of Material

AERIAL CABLEWAYS OR CABLE-CRANES 3X9 shown in Fig. 456, erected by Bleichert & Co. It represents a double cableway with which the ore is transferred in skips from the ore pockets at the mine to the ship. 1 he same cable hoist may be used as well for the removing of ballast from the ships as for the delivery of other goods from the ship to the mine. Similar installations may be used for the coaling of ships. The “Calhoun” Cable- way.1—This is in some respects not unlike the cableways already described. It is built by D. J. Calhoun, of Chicago. Fig. 457 represents the skip being automatically filled, after being lowered at the correct angle into a heap of coal. It is hoisted by the hauling rope from either of the two terminal towers, similar to Lidger- wood’s. The travelling trolley is con- veyed by the hauling rope to a pre- determined point, where a catch x has been fixed to the rail rope. This locks the- traveller in position, so that the skip may be hauled up on the inclines of the stock heap and there filled. When the skip has been raised, the trolley disen- gages itself from x, and runs with its load to the discharging point y, where the skip is automatically emptied. In the illustration, points x and y are. shown close together, but these can of course be fixed in any suitable position. By means of a second hauling rope the trolley is again conveyed to the loading point, and on its way is arrested by the tripper z, which only comes into play at the forward movement of the trolley, and has the effect of so disengaging the fall block with its skip that it again reaches the stock heap. The trolley is shown in two views in Fig. 458, and consists of plates a and b, suspended on pulleys"c and d. Between the plates is placed the sheave E. Fig. 456. Cableway for Loading Ships on a Coast Difficult of Access. 1 The Author is indebted to Professor M. Buhle for the following description.