Article Support Rack

An article support rack comprising:

• a primary article support rack having a first shelf-board and a plurality of support legs joined to the first shelf-board, the first shelf-board forming a first rail;
• a secondary article support rack having a second shelf-board and a plurality of support legs joined to the second shelf-board, the second shelf-board forming a second rail and a third rail;
• a slide guiding device disposed between the primary article support rack and the secondary article support rack for guiding the primary article support rack and the secondary article support rack slide relative with each other;
• and
• a clamp, one end of the clamp forming a first split ring, the other end of the clamp forming a second split ring and a third split ring which are symmetrical and have opposite splits, the first split ring buckling on the first rail of the primary article support rack, the second split ring and the third split ring selectively buckling on the corresponding rails of the secondary article support rack;
• wherein an inner diameter of the first split ring is larger than an outer diameter of the first rail, an inner diameter of the second split ring is larger than an outer diameter of the second rail, and an inner diameter of the third split ring is larger than an outer diameter of the third rail.