The Mechanical Handling and Storing of Material

I IO THE MECHANICAL HANDLING OF MATERIAL reduce as much as possible the fall of the coal, the delivery terminus of the band is- made with a jib end, and can be raised or lowered by means of a small winch and chains according to the level of the coal in the truck. A counterweight is used to balance the weight of the movable end. Fig. 146. Babcock & Wilcox’s Tipping Tray Conveyor. To every other link of the chain are fastened iron buckets, which serve to prevent the coal from falling when on the inclined portion of the conveyor, and so prevent breakage of the material. These buckets also serve to collect the small coal which has fallen through the bars as the chain goes back empty, scraping it together after the manner Fig. 147. Cornet Conveyor with Lowering Jib End. of a push-plate conveyor. For this purpose the ends of every other scraper bucket are extended so that only half the buckets act as scrapers. This apparatus is driven from a hexagonal terminal which is mounted, together with its countershaft, in adjustable brackets, for the purpose of tightening the band. The other terminal is only four-sided to save head room. Each link of the conveyor is fitted with a pair of small rollers running in grooves.