Control device for the water tank of a flush toilet

Claim 1

A two-level controlling device for the water-tank of a flush toilet comprising: a housing having a threaded tube mounted to the water-tank; at least one crank means extending through the housing to outside of the tank and embedded with a handle means; a pulling rod means having its short arm caught into the rear of said at least one crank means and the front end of said short arm extending through shaft tube of said crank means and the housing to the outside of the tank and embedded with a handle means, and the long arm of said rod means connecting to a falling water head through a flexible member; at least one cradle means provided inside said housing, and being kept in a position of engaging with a lower end of said crank means; a connecting means having its upper portion movably connected to the outer end of said cradle means; a floating means being movably connected to the lower portion of said connecting means; and when said handle means being pressed, rendering said crank means, said rod means and said cradle means to rotate a certain angle counter-clockwise, the floating means moving upward; said falling water head is thus opened to start flushing, until the flotation force of said floating means is lost.