Patent GB-190111836-A (GB)
Title: Improvements in the Method of Storing Cement, Coal, Grain, Ore, Lime, Gravel and similar Materials.
Inventor: WHITWORTH THOMPSON
Filed: 1901-06-10
Granted: 1902-05-15
Abstract: 11,836. Whitworth, T. June 10. Loading and unloading ; conveyers; elevators.- Relates to methods of storing cements, coal, grain, ores, lime, gravel, &c., and is described with special reference to the storage, cooling, and aÙration of cement proceeding at a high temperature direct from the grinding-mills. Fig. 2 is a diagrammatic plan of the apparatus. The cement is carried along an endless band a, and is discharged on to a transverse band f supported by a gantry c movable on rails c'. On the gantry is a movable throw-off apparatus with discharge shoots j<1> which can be brought to any desired position within the bin or building. One of the end pulleys a<2> is turned by power which is transmitted by the band a to the other operative parts of the apparatus. Fig. 3 shows the throw-off apparatus of the band a. The band rises towards the upper pulley d and discharges the material into a casing e from which it passes by shoots on to the transverse band f. The band a, having discharged the materials, passes over the lower pulley d<1> and on to the further end of the store. The band f, which receives the materials from the casing c, conveys them to a throw-off apparatus comprising a carriage j having distributing-shoots j<1> and pulleys h, h<1>. The band f is endless and passes over a pulley at the farther end of the gantry. The carriage is moved to and fro on the gantry by means of ropes p<2> passing over drums p<1>. Power is transmitted to the drums p<1> from the shaft of the pulley d through bevel gearing, and spur-wheels &c., a suitable reversing mechanism being included in the transmission gear. Power from the same source serves to propel the gantry along the rails c' in either direction. Instead of the band f, a screw conveyer may be used on the gantry, doors being opened in its casing at the point where it is desired to discharge the materials. Fig. 8 shows in side elevation one end of a gantry fitted with an elevator for removing material from the bin or returning it by means of the reversed conveyer to the feed band a. The elevator consists of buckets s fixed on a chain &c. passing over pulleys s<2>, s<3>. The buckets passing up and down are prevented from catching each other by the guide-wheels D. By means of the worms s<8> and toothed quadrants s<7>, the elevator can be inclined more or less so as to remove material at any required depth. The material passes into a shoot which transfers it to the reversed conveyer of the gantry. The same lever is used to start the elevator and to reverse the conveyer. The main conveyer band a of the machine carries the material to an automatic weighing-machine, or, if the cement is to be cooled and aÙrated, the band a may convey it to a bin, from which it is again delivered to the store. In a modification, the elevator is fixed on a slide which can be raised or lowered in the gantry carriage, in addition to having a worm or sector tilting motion of the kind shown in Fig. 8. If the store is provided with a V-shaped floor, the elevator and reversing-mechanism are not required, the materials being removed from the store by means of valves opening at the bottom of the store into a longitudinal screw conveyer. A screw conveyer may be used instead of the band a, in which case the cross conveyer or the gantry may be driven by a rope, a squared shaft and sliding gear, an electromotor, or by pneumatic power.