Abstract: A belt-like conveyor including at least two continuous chains which are parallel to one another and driven by sprocket wheels. The chains have a number of overlapping chain links and a number of carrying bars which are disposed transversely to the chains to which the end pieces of the bars are also connected. The end pieces of the bars also function as pins for the chain links while penetrating two of the latter and the remaining part of the carrying bars between the two end pieces serve as a carrying area of the conveyor. The carrying bars extend over the top of the chain links toward the exterior and end portions of the carrying bars are U-like bent toward the bottom and toward the inside and penetrate the chain links from the exterior, which permits an unimpeded lateral sliding on and off of pieces and which provides an enlarged carrying area and which is also suited for conveying heavy pieces while developng only a low surface pressure.

Abstract: A scraper control system for conveyor belt cleaning includes a pair of elongated scraper elements mounted at opposed ends to a pair of spring-biased arms. The sraper mounting arms are attached to a separate shaft at each side of the belt. Each shaft is torqued by one of an identical pair of torque activator units. Each torque activator unit includes an extensible bellows member adapted to be placed into communication with a regulated, high pressure source of water, such as mine waste water. The bellows member has a mounting are fixed relative to the frame of the conveyor and a moveable torque are connected at one end to the bellows member and fixed at a seond end to the shaft. High pressure water preferably mine waster water is regulated between 15 to 100 psig and introduced into the bellows member to cause the torque arm to exert a force on the shaft which, in turn, transmits the force through the spring-biased mounting arms to the scraper elements.