Abstract: Individual longitudinal channels equipped with closely spaced wheels running the full length of the conveyor and suspended in a natural catenary fashion by cross support cables is disclosed.

Abstract: A combined bearing sealing and bearing adjusting subassembly for use with two members which rotate relative to each other upon a tapered roller bearing assembly, such as a belt conveyor idler roll which rotates relative to a stationary shaft upon a pair of axially spaced tapered roller bearing assemblies, and the combination of such a bearing sealing and bearing adjusting subassembly with a conveyor idler roll assembly. A separate cartridge-like subassembly is mounted between the two relatively rotatable members and contiguous each respective tapered roller bearing assembly. Each cartridge-like subassembly includes a combined contact seal and a labyrinth seal which cooperate to prevent ingress of foreign matter into the corresponding bearing assembly or the egress of lubricant from the bearing assembly.

Abstract: A conveyor apparatus for elevating loose bulk material from one level to another, as in self-unloading ships, and more particularly a dual belt conveyor-elevator having a relatively long horizontal feed section, and further including a belt take-up apparatus and system including a normal pressure mode for tensioning the outer belt of the dual belt conveyor-elevator under normal operating conditions, the belt take-up apparatus and system also including a high pressure mode which is connected in tensioning relation to the outer belt of the dual belt conveyor-elevator upon loss of motive driving power to the dual belt conveyor-elevator. The high pressure mode is capable of substantially immediately taking up slack which develops in the outer belt, particularly in the horizontal feed portion thereof, with consequent prevention of spillage of load material, when the driving power for the dual belt conveyor-elevator is interrupted.