Two-stage flush device for a toilet water tank

A two-mode water-saving device for a flush toilet having a water tank and a flushing bowl, with the said water tank having a flapper type drain valve at the bottom of the said water tank that is moveable between a closed position, a partially open position, and a fully open position, and a flush handle mounted on the exterior of said water tank, said device being capable of producing a short flush mode and a full flush mode, wherein said water-saving device comprises:

• a bracket body adapted to be mounted on the front wall of said water tank so that an outside portion of said bracket contains a plurality of stop pins and is on the exterior of said water tank and an inside portion is looped over the top edge of said water tank, which inside portion has a securing means capable of positioning said bracket behind the flush handle;
• a pivot-lever which is positioned so that it will pivot in a plane parrallel to the front of the water tank, is pivotally attached to said bracket body, and has on one end a vertically adjustable gap set screw and locking means said set screw is adapted to make contact with said flush handle in the short flush mode;
• said lever contacting one of said stop pins in the full mode of flush and another of said stop pins in the short mode of flush wherein said flush handle is limited in it's downward travel by the set screw, allowing said drain valve to partially open and to remain partially open as long as the flush handle is held in the downward position.