Abstract: A metering device for use in a conventional flush toilet having a flush tank for regulating the amount of water utilized in filling the flush bowl and trap of the toilet. The device includes a metering tank disposed in the flush tank which is filled with a fixed volume of water, a first conduit from the flush tank inlet water supply into said metering tank, a second conduit disposed between the metering tank and the overflow tube which is utilized to refill the bowl and trap, and a valve means disposed in said second conduit for regulating the flow of water from the metering tank into the overflow tube. Applicant has determined that the conventional toilet having a flush tank utilizes an excess amount of water which is lost during the flushing action in refilling the flush bowl and trap. The metering tank and valve delays the filling of the flush bowl and trap until after the flushing action is completed and regulates the total amount of water receivable into the trap and bowl.

Abstract: A water closet having two operational modes, one for a partial flush and the other for a full tank flush, utilized in conjunction with a bowl trap fill meter tank which reduces water consumption. A two position actuating linkage utilized in conjunction with an auxiliary float provides positive partial or full tank flush operation dependent upon the directional movement of the flush lever handle by an operator. A bowl trap fill meter tank disposed in the flush tank is utilized for refilling the toilet bowl trap, reducing the amount of excess water normally wasted in conventional flush tanks during flushing and refilling of the tank and bowl.