Filing cabinet

In apparatus for the suspension filing of sheet articles having peforations extending along their upper edges, a support frame having front and rear portions interconnected at their opposite ends by guide rails, a plurality of racks extending between and movably mounted on said guide rails, suspension carrier pins mounted on said racks positioned to engage the perforations in the articles to be filed, said carrier pins being oppositely directed and in staggered relationship to each other, adjacent racks being movable relative to each other from a closed position in which the said adjacent racks define a suspension compartment therebetween with their respective carrier pins extending across the suspension compartment to an intermediate position in which the carrier pins just overlap each other, and to an open position in which the carrier pins are spaced apart to permit removal of articles suspended on the pins, an actuating rod extending along the length of each rack, means mounting each of said actuating rods for movement in a plurality of directions, an operating handle connected to each actuating rod for moving said rod, and coupling means carried by each rack to detachably connect it to the next rearward rack, said coupling means being operatively connected to said actuating rods, whereby movement of said actuating rods in a first direction will actuate said coupling means to disengage a selected rack from the next adjacent rack, the improvement which comprises locking means carried by the frontmost rack for selectively locking the frontmost rack and any additional racks coupled thereto in either the open or intermediate positions, said locking means comprises at least one end cam mounted on said frame, a hook mounted on the actuating rod of said frontmost rack positioned to releasably engage said cam to lock said foremost rack in the open position, said hook being displaceable to release said foremost rack for rearward movement upon movement of said rod in a second direction.