Storage system including movable pallet racks

In a storage system including a row of separate horizontally movable wheeled rack means arranged to permit a passageway to be formed between selected adjacent rack means, a carriage movable into and along said passageway and having a vertically movable fork lift enabling depositing articles in and removing articles from said rack means, the improvement comprising horizontal rail means affixed to the sides of said rack means, said carriage being positioned to ride on said rail means, a separate horizontal conveying means mounted at the end of each of said rack means, whereby said separate conveying means on each side of said passageway form continuous conveyors parallel to said row of rack means, and further comprising a transfer carriage movable parallel to said row of rack means at said end thereof, said transfer carriage having rail means alignable with the rail means of said rack means, whereby said first-mentioned carriage may be movable into said transfer carriage, said transfer carriage being at a level lower than said conveyor, and further including guiding means for guiding said first mentioned carriage, whereby articles may be moved to and from said fork lift by way of said conveyor.