Abstract: An idler roll assembly for conveyors is provided which is particularly adapted for one-shot lubrication. The assembly includes roll mounting bearings having inner races which are mounted on a tubular roll mounting shaft and inner and outer grease seals which define a bearing chamber. Lubricant is admitted to the bearing chamber from a bore in the tubular roll mounting shaft and through a radial passageway which communicates with another passageway defined by the inner bearing race and a channeled portion of the shaft. The outer grease seal is a labyrinth seal comprising a first labyrinth portion fixed with respect to the roll and a second labyrinth portion fixed with respect to the shaft. A grease release lubricant passage is defined between the second labyrinth portion and the shaft.

Abstract: A continuous belt (14) has upper and lower runs (14a, 14b) and is supported by upper and lower runs (23a, 23b) of steel ropes (23) carried and driven by roller (12, 13). The ropes (23) are supported on wheels (22) carried by a frame (11). Rollers (30) invert the lower run of the belt and lead it onto the lower run of the ropes. Magnetic members (50) are secured to the belt and hold the belt relative to the ropes to inhibit relative movement and reduce wear.

Abstract: A high angle conveying apparatus including a conveyor belt and a cover belt trained for movement in endless paths of travel. The belts are supported for movement by an array of upwardly directed and downwardly directed troughed idler rolls for movement through a material loading zone whereat the belts are out of operative proximity with each other, through a material lifting zone whereat the belts are in operative proximity to each other whereby material on the conveyor belt will be held in contact therewith by the cover belt, and then through a material discharge zone whereat the belts are moved out of operative proximity with each other for discharging material therefrom. Pressure devices are provided to maintain predetermined belt speeds and pressures.

Abstract: A continuous belt (14) has upper and lower runs (23a, 23b) of continuous ropes (23) carried and driven by end rollers (12, 13) and intermediate wheels (22). To allow the lower run (14b) of the belt to be supported by the lower run (23b) of the ropes, the lower run of the belt is laterally diverted from below the lower run (23b) of the ropes and re-diverted back onto the lower run of the ropes by rollers (30) in the region of one end roller (12). The lower run of the belt is again diverted laterally and re-diverted below the lower run (23b) of the ropes adjacent the other end roller (13). In another embodiment, the belt (114) is twisted while the lower run of the ropes (123) is vertically diverted to allow space for the twisting of the lower run of the belt below the upper run of the belt, so that lateral movement of the belt beyond the normal confines of the conveyor arrangement is avoided.

Abstract: An idler roll cylinder is secured to roll heads mounted within the ends thereof by forming an annular, outwardly opening groove in and around the outer periphery of each roll head facing the inner surface of the roll cylinder. A forming pressure is applied adjacent each end of the roll cylinder to form an inwardly extending annular lock member which is pressed into the annular groove. Angularly spaced, outwardly opening recesses are provided in the outer periphery of each roll head facing the inner surface of the roll cylinder and receive inwardly projecting lock elements formed in the roll cylinder by the forming pressure applied thereto.