A chain for a vacuum conveyor, includes a plurality of links each having a flat front surface for placing a conveyance object and a back surface facing to a suction portion. A plurality of adsorption holes each having a large opening area on the front surface and a small opening area on the back surface is formed in the link.

A sheet stacking system for transporting sheets and depositing them in a stack includes a layboy, a transport conveyor downstream of the layboy, and a main conveyor downstream of the transport conveyor, the main conveyor having a frame and being supported by a conveyor support, a discharge end of the main conveyor being movable between a lowered position and a raised position relative to the conveyor support. The main conveyor intake end is configured to move from a first position when the main conveyor discharge end is in the lowered position to a second position when the main conveyor discharge end is in the raised position, and also a variable length conveyor between the transport conveyor and the main conveyor, the variable length conveyor having a discharge end connected to and movable with the main conveyor intake end and movable relative to the transport conveyor discharge end.

An auger conveyor for granular material or grain has a discharge outlet portion which pivotally supports a tubular inner spout section of a telescoping spout assembly. The inner spout section is pivoted by a remotely controlled actuator between an outwardly projecting upper discharge position and a downwardly projecting lower discharge position. The assembly includes an outer tubular spout section supported by the inner spout section for telescoping movement on the inner spout section, and an actuator in the form of an elongated link member pivotally connects the outer spout section to the conveyor outlet portion to produce the telescoping movement of the outer spout section in response to pivoting of the inner spout section. The spout assembly maintains a substantially constant vertical height while moving between the upper and lower discharge positions to avoid interference with a container receiving the grain.