Transport system for an automatic article grading apparatus

A roller element for a roller assembly used in an endless conveyor system for grading/sorting articles. The roller element has a faceted peripheral edge, each facet being of equal length, with approximately 12 facets per unit. Also, a quick-release roller assembly for use in a similar endless conveyor system includes a steel shaft on which roller elements are mounted. The shaft has a first opening in one end to receive a connecting pin element from a first chain and a second opening in the other end thereof which receives a connecting pin element from a second chain. Bushings are positioned in both of the shaft openings for receiving the connecting pin elements. In the one opening, a spring element is positioned between the bushing and the bottom end of the opening. The shaft has a slot in the side surface of the shaft, opening onto the first end of the shaft. A sprocket member is connected to the bushing at the one end and slidable along the shaft, bringing the bushing along, such that when the sprocket means is moved along the shaft, the bushing moves away from the connecting element therein, permitting the connecting element to be released from the shaft, so that the roller assembly can thereafter be conveniently removed from the conveyor.