Abstract: A roller arrangement (20) for a stairlift carriage is described, the arrangement including a central roller set (22), and outer roller sets (24) and (26). Rollers (42), (43, 44) and (45) in the outer roller sets are mounted in yokes (48) which are mounted for independent pivotal movement, relative to one another, in two orthogonal axes. The axes of each set preferably lie in common planes.

Abstract: A single-cable aerial cableway including guide rails forming a lead-in guide, secured to a stationary cable support structure. The lead-in guide cooperates with a wheel secured to the grip so as to stabilize and position the grip and the load before they pass along the structure. The position of the lead-in guide is automatically adjusted when the position in height of the cable changes so that the weel always enter the lead-in guide.

Abstract: Track (2) serves the stations of a line. A plurality of pallets (1) travel on track (2). The track and the pallets have guide elements (4, 54, 55) working with one another. The track is bordered by at least one marginal driving belt (7). The pallet (1) has on at least one of its sides an element for gripping the belt (7). The gripping element has at least one heavy element (8, 18, 20) resting by gravity on belt (7) so that a movement of this belt (7) relative to pallet (1) produces by friction a movement of this heavy element (8, 18, 20), triggering the engagement of the gripping element of pallet (1) with belt (7).

Abstract: An operator carriage intended to be used at a long-walled pit face in a coal or metal mine and comprising endlessly running members arranged at both ends of a conveyor and driven by a motor, an operation table suspendedly attached to the side of a spill plate of the conveyor and supported by running supports such as guide rollers which are engaged with guide rails attached to the same side of the spill plate, and a carrying mechanism arranged at the operation table so as to hold the endlessly running members.

Abstract: A rope tow for use on a ski slope. Rollers are rotatably mounted one above the other on a fixed frame; the bearing surfaces are in frictional engagement. One of the bearing surfaces has a plurality of ridges. A knotted endless rope is passed through the engaged surfaces. The ridges clamp the rope as it passes therethrough to prevent slippage.