Abstract: A scraper blade has at one end a scraper tip and at the other end a mounting base. The scraper tip is outwardly tapered. The scraper blade has at least two layers of different materials. The layer of material which is facing forward, i.e. that first meets the surface to be scraped, and which is adapted to form the actual scraper tip is made of a material which is both softer and more abrasion resistant that said other layer.

Abstract: A scraper blade has at one end a scraper tip and at the other end a mounting base. The scraper tip is outwardly tapered. The scraper blade has at least two layers of different materials. The layer of material which is facing forward, i.e. that first meets the surface to be scraped, and which is adapted to form the actual scraper tip is made of a material which is both softer and more abrasion resistant that said other layer.

Abstract: A device steers a conveyor belt (11) and centers the same relative to the intended path of travel of the belt. A belt position detector (22, 23) determines whether the conveyor belt has strayed from its intended path. A belt support roller (24) which is adapted to engage and roll against the belt and which is pivotable relative to the belt returns the conveyor belt to its intended path. The belt position detector (22,23) and the belt support roller (24) are arranged on a roller cradle (21) which is connected to a frame (29) by means of inclined links (30) for pivoting and setting the belt support roller (24) in a pivoting position.

Abstract: A wall exposed to wear has a wear lining composed of a number of juxtaposed wear lining elements of an elastomeric material or of a mix of elastomeric and other wear-resistant materials. The wear lining elements are secured to a supporting surface with fastening means. Two opposite narrow faces of the wear lining elements have V-shaped recesses, which open toward the narrow faces. The fastening means have washers with V-shaped projections, the V-legs of which are inserted into and abut against the bottom wall of the recesses or into shoulders formed in the recesses, after fastening the elements.

Abstract: Belt-position sensing structure (30) and belt readjustment apparatus (36) are used to steer a conveyor belt (11)) and to center said belt relative to the intended path of travel of the belt. The belt readjustment apparatus (36) is a belt-support roller (36) intended to engage the belt and to roll against the latter and being pivotal in the principal plane of the belt. The belt-position sensing structure (30) is connected to the belt-support roller (36) via a linkage system (27, 34) for pivoting and setting the belt-support roller in a pivotal position in which said belt-support roller, by engaging the belt, exerts a readjustment force on the belt.

Abstract: Detachable screen cloths (14) are fixed on a screen cloth element (11) having a rigid support frame (12, 13) serving as a holder and intended to be fixed in the screen frame (10) of a screening machine. The detachable screen cloths (14) have a rigid screen cloth frame (30, 31) surrounded at least partially by elastomeric material. The rigid mounting frame (12, 13) of the screen cloth element has a guide device (32, 33) which is laterally open for receiving and holding the screen cloth (14). The screen cloth (14) is in sliding engagement with the guide device (32, 33) during the insertion thereof into the guide device. The screen cloth (14) and the guide device (32, 33) have inter engaging surfaces preventing, during the screening operation, relative movements between the screen cloth (14) and the rigid mounting frame (12, 13) of the screen cloth element in directions making an angle with the plane of the screen cloth.

Abstract: A conveyor belt scraper device has at least one scraper blade which is mounted in an undercut mounting recess in a supporting element. The scraper blade is retained in the undercut recess by inwardly directed flanges defining the opening of the recess. One end of the scraper blade forms a scraper tip and the other end has a substantially complementary shape with respect to the mounting recess and is inserted therein. The long sides of the scraper blade have mounting grooves for holding the inwardly directed flanges. According to the invention, the scraper blade has a longitudinal slot extending from the end surface of the scraper blade through a considerable distance outwards beyond the flanges of the mounting recess towards the scraper tip. A T-shaped stiffening member is inserted in the longitudinal slot for stiffening the scraper blade. The invention also relates to a scraper blade of this design for use in the conveyor belt scraper device.