Abstract: A conveyance guide alignment measuring device adapted to track along conveyance guides in a shaft, such as a lift shaft, comprises a substantially rigid frame, roller assemblies at either end of the frame and a sub-frame movably suspended from the frame. A pair of opposed roller assemblies are mounted in the sub-frame. The roller assemblies include a fixed assembly which engages a reference guide in the shaft and an outwardly biased assembly which engages an opposed conveyance guide. The sub-frame, being freely suspended, follows any misalignment in the guides and motion sensors are mounted to detect and measure relative motion of the frame, the sub-frame and the roller assemblies mounted on the sub-frame whereby predetermined alignment parameters of the conveyance guides may be determined.

Abstract: A material handling system in which a skip is filled with material from a loading flask. The skip moves downwardly during filling and the flask, which is supported by at least one ram, is caused to move downwardly in unison with the skip, to minimize material spillage.

Abstract: The invention provides a guiding arrangement for a skip, cage, lift or the like wherein guide rollers on opposed sides of the skip are urged against guides which flank the skip, each by way of first and second biasing springs. The first biasing spring has a lower load resisting capacity than the second biasing spring and upon a predetermined deflection of the first biasing spring the second biasing spring is brought into action to resist further deflection.