Abstract: A shuffle feed structure comprising first and second sets of shuffle feed mbers supported on their respective frames for reciprocating movement so as to advance articles lying thereon in single file order. The feed members are constructed with adjacent surfaces including offset portions so as to prevent articles being advanced from aligning with and falling through the space between the individual flights.

Abstract: A shuffle feed sizing structure wherein articles are progressed from valley to valley over a shuffle feed mechanism and as they progress the article advancing face of the shuffle feed member provides a sizing opening of a given width so that the articles small enough to fall through the opening are discharged downwardly beneath the shuffle feed at this point. Various widths of sizing opening are provided between the faces of the shuffle feed as required and the largest articles are discharged over the end. Means are also provided for ejecting articles from a sizing opening if they tend to become wedge or if they remain in front of the sizing opening but are too large to pass through the opening.