Mail sorter basket for handling mail trays

Claim 1

A sliding basket means for storage of mail trays including primary support structure for maintaining said basket means in a plurality of positions relative to a generally planar work surface and adapted to be accepted in a semi-concealed manner relative to another surrounding structure, said basket means further including linear moveable support means, said linear moveable support means adapted for moving said basket means between a first stored condition within said primary support structure and a second open condition extending beyond said primary support structure whereby access to said basket means is readily available, means for altering the elevation of the basket means relative to said surrounding structure to thereby facilitate transfer of mail between an upper surface of said surrounding structure and said mail trays located in said basket means; said elevation altering means including an inclined slide means; said slide means including a plurality of nested sections that carry said basket means and permit its movement a distance substantially equal to its own length; said slide means further including detent means to restrain said basket means in at least two positions; said basket means including a counterbalancing means to assist said detent means in maintaining said basket means at predetermined selected positions, as well as assist the operator in moving said basket means along the incline of said slide means between said first stored condition and said second open condition; said counterbalancing means including a vertically moveable weight carrying a centrally disposed double pulley in a cutout portion of said weight, a pair of fixed pulleys positioned adjacent the upper path of said weight, a fixed hook adjacent one of said fixed pulleys, a third fixed pulley spaced from said first two pulleys and the path of said weight and said third pulley being fastened to a bracket mounted on the support carrying said slide means, cable means connected at one end to the forward end of said basket means, passing around said third pulley and then winding around said two other pulleys and said double pulley with said other end of said cable means being affixed to said fixed hook means, whereby movement of said basket means along said slide means results in an elevation of said weight means be action of said cable means moving around said pulley means.