Abstract: A roller chain tensioning device includes a pair of low friction chain engaging blocks that are held selectively together by a flexible strap and fastener device. The blocks include formed surfaces for loosely receiving the side plates of the chain and for roller engagement by the chain rollers. The chain flights are received with the rollers in moving contact with the guide blocks while the chain side plates are loosley and freely received by opposed grooves, opposite to the roller engaging surfaces. The blocks are provided with opposed roller engaging surfaces of different size to facilitate operation with chains having rollers of different size. The strap and fastener enable selective adjustment of the blocks toward or away from one another thereby adjust tension along the engaged chain flights.

Abstract: Auger apparatus includes a drive portion, a connector portion and a flight portion. The drive portion includes an elongated rigid shaft member including a longitudinal axis disposed along the path of material being advanced by the auger apparatus. The connector portion includes a continuous stub section affixed to and extending outwardly from the periphery of the shaft member, the stub section being spirally disposed around the shaft member along the length thereof. The stub section includes a surface extending outwardly from the shaft member and substantially perpendicular thereto. The flight portion includes a plurality of radially cut elongated disc members, each of the disc members having an internal opening substantially equal in diameter to the outside diameter of the shaft member. An internal section of each disc member surrounding the internal opening thereof is in full contact with and affixed to the perpendicular surface of the stub section.

Abstract: An idler trough roller assembly adapted to be mounted along a supporting frame to support the upper flight of a belt conveyor during movement of bulk material. Fixed angular supports are mounted on the frame. Each support has an outside cylindrical surface. The cylindrical surfaces of the individual supports are discontinued along a plane that forms an acute angle relative to the support axis. Individual rollers are fitted about each support. The rollers are each cup-shaped, with coaxial cylindrical inside and outside surfaces and an integral cap enclosing and completely covering the roller outer end. A radially projecting shoulder at the outer end of each support and an interfitting groove within each roller prevent axial movement of the assembled roller with respect to the support.