Patent GB-127080-A (GB)
Title: Improvements in or relating to Endless Conveyors.
IPC: B65G17/00
Filed: 1918-04-25
Abstract: 127,080. Roe, J. P. April 25, 1918. Fixed-bucket conveyers and elevators; gravity pivoted, and swingiwg bucket conveyers and ele vators; endless-rope conveyers and elevators with slat and lath carriers; driving-gear; guiding; idler rollers; tensioning; carriers, attaching to ropes, auxiliary ropes.-An endless-rope conveyer comprises a traction rope having fixed to it transverse carrier-bars that are supported at other parts of their length by, but not fixed to, another rope or ropes, which may be travelling or stationary, The carrier-bars c, Fig. 6, are secured by clips d to the traction rope a<1> and rest on the auxiliary rope b'. At the driving-sheave f, the free ends of the bars pass into a guide, g<1>, Fig. 5, which directs them to the upper side of the lower run of the rope. The rope is deflected by pulleys g to permit the upward passage of the bars; but in modifications this result is attained by placing the sheaves e, f out of parallelism, or by deflecting pulleys and sheaves out of alinement. Similar arrangements are used at the other end of the run for transferring the ends of the bars. The sheaves e<1>, f<1>, Fig. 3, are mounted in a frame n<1> which is connected by a rope p to a weight o. The bearings t of the sheave f<1> can be moved along the frame n<1> by a screw u. In a modification, the loop formed by the rope b<1> is within the loop formed by the rope a<1>. The free end of each carrier-bar c, Fig. 14, is provided with an endways movable sleeve c<2> having two grooved portions c<3>, c<4>, of which one bears on the rope b<1> and the other on a guide g<1>. A short tilting bar may be pivoted to the free end of each carrierbar, and, at each end of the run, the carrier-bars may pass between guides which are so bent and arranged that the tilting bar is lifted off the upper run and deposited upon the lower run, and vice versa. The driving &c. sheaves may be horizontal instead of vertical. Where the conveyer passes from one level to another, the traction ropes a, a<1>, Fig. 30, are guided by rollers 1, 2 and supported by a series of rollers 5, 6, and the auxiliary ropes b, b<1>, Fig. 31, pass completely round lower guide-wheels 7, 8 and over upper guide-wheels 9, 9<a>. Fixed guide-bars 7<a>, 8<a> guide the free ends of the bars where the ropes pass round the wheels 7, 8. In order to reduce strain in the clips d when the conveyer is inclined steeply, the free end c', Fig. 32, of each carrier-bar is connected to the clip d of the next by a diagonal bar 10, or each clip may be provided with an extension which takes into a recess in the following clip. The carrier-bars and clips on the lower 'run a<1> of the traction rope are lifted clear of the, grooved intermediate supporting-pulleys by providing the fixed end of each bar with an inclined extension which engages the plain periphery of each pulley, or by three plain lifting-disks mounted on axes at different heights. If the bars c are closely spaced, the grooved pulleys are dispensed with, and the fixed ends of the bars may be supported by chain paths 14, Fig. 38, carried by a fixed support 15. The free ends of the carrier-bars may be prevented from moving vertically with respect to the auxiliary rope. The driving-sheaves for the traction and auxiliary ropes may be connected through differential gearing in order that both ropes may be driven at the same speed. The carrier-bars may be straight from end to end, or be depressed or raised at intermediate parts, or be provided with lateral stops to prevent lateral movement of boxes placed upon them. The carrier-bars may also carry buckets, Fig. 32.