Vertical sort bin

A sort bin having substantially vertical bin walls and a vertically movable bin floor, the floor being mounted such that it is in a predetermined and fixed inclined attitude throughout its vertical movement, said sort bin comprising:

• a pair of spaced apart, facing, substantially vertical bin walls supported at their ends between vertical columns of an I-beam configuration;
• a downwardly inclined bin floor extending between said bin walls, said bin floor consisting of a plurality of downwardly inclined arms and a horizontal beam, each arm being secured to said horizontal beam;
• and
• a carriage having an upper roller and a lower roller rigidly secured to its upper end and its lower end respectively, the carriage being supported from and guided between the columns of one bin wall, each carriage being disposed with its upper roller running against the inner surface of on flange of said vertical column and its lower roller running against the outer surface of said flange to be vertically movable therealong so that said bin floor can vertically move between a raised position adjacent to the upper ends of said bin walls and a lower-most position at the region of an unloading conveyor with the bin floor being maintained at all times during operation in its downwardly inclined attitude whereby as the bin is filled with cut lumber, the bin floor lowers until the bin is full, whereafter further lowering of the bin floor permits the cut lumber to slide down the bin floor and below the bin walls, at which time the cut lumber discharges onto said unloading conveyor.