Abstract: A hydraulic power take off device for an endless conveyor belt system having an upper material run and a lower return run, said device being arranged to generate hydraulic fluid at pressure to maintain a self adjusting force to belt cleaning equipment, and other equipment that can utilize fluid pressure. The take off device is driven directly or indirectly from the motion of the conveyor belt or from the motion of other components fitted to the endless system. The power take off comprises a hydraulic pump which is rotated by the motion of the endless conveyor and generates fluid at pressure via an adjustable relief valve and maintains a constant self adjusting force of actuators, automatically compensating for wear that takes place on the equipment being operated and providing an automatic and interlocked source of power, generating pressure only when the conveyor belt system operates.

Abstract: A support structure for a conveyor belt which includes two upwardly extending, pivotally mounted, support arms, a garland of conveyor idler rollers suspended between upper ends of the support arms and, for each support arm, respective biasing means which permits pivotal movement of the support arm, towards the other support arm, only when the support arm exerts a force on the respective biasing means in excess of a predetermined load.

Abstract: A conveyor scraper includes a support structure and a scraper blade which is mounted to the support structure by a mounting element so that it is movable to a limited extent relative to the support structure. A biasing element acts between the support structure and the scraper blade to ensure contact with an adjacent conveyor. A mounting element that mounts the scraper blade to the support structure includes a zone of weakness that permits the scraper blade to deflect laterally in the event of impact by an irregularity on the passing conveyor belt surface.

Abstract: A composite scraper blade which is suitable for use with a primary belt scraper which includes a support formed from a first material and an abrasion resistant scraping element which is formed from a second material and which is engaged with the support.

Abstract: A plough scraper assembly for use with a conveyor belt which includes a plough scraper, first and second overhead supports which are spaced from each other in the direction of belt movement, first and second levers which are respectively pivotally attached at their upper ends to the first and second supports and, at their lower ends, to the plough scraper, the levers being inclined downwardly in the direction of belt movement, and a spring which biases the scraper towards the belt surface.