GB743561A - Improvements in conveyors - Google Patents

Abstract

743,561. Endless belt conveyers. MINING ENGINEERING CO., Ltd. July 23, 1954 [Aug. 4, 1953], No. 21542/53. Class 78 (1). In a conveyer having separate endless carrying and driven tension elements the carrying element is .supported on the tension element in both runs, the return runs being directed into a track laterally spaced from the main runs. In one form, Fig. 2, the main runs of the tension element 1, which comprises two chains connected at intervals by cross bars, and the carrying element, i.e. a belt 2 are passed over a reversal sprocket 3 and a reversing roller 4 respectively and are twisted together into the vertical plane, deflected laterally by pairs of vertical sprockets .5, 8 and rollers 6, 7 respectively and further twisted to bring the belt on top of the tension element in the return run. In another form, Fig. 4, to enable the conveying length of the return run to equal or exceed that of the main run, the sprocket 8 and roller 7 are replaced by a sprocket 12 and roller 11 deflecting the tension element and the belt to run at the side of the main run and in the same direction as the latter, both elements being untwisted to bring the belt below the tension element before passing over a reversing sprocket 13 and a reversing roller 14 respectively which brings the belt on top of the tension element for conveying in the direction opposite to that of the main run. By this arrangement conveyers can be arranged with both main and return conveying strands arranged in sequence. In a further form, (Fig. 5, not shown), the return run of the tension element is arranged as in Fig. 2 while that of the belt is arranged as in Fig. 4, the resulting unsupported conveying length of belt being supported by cushioning idler rollers. The reversing roller 14 may be driven and intermediate drives may be included.