Control device for regulating the flow between a spout and a shower and capable of controlling the rate of flow from each independently of the hot and cold faucet handles

Claim 1

Apparatus adapted for being connected to hot and cold water supplies having a faucet control selectively diverting the flow of water between two outlets and for regulating the rate of flow from the selected outlet independently of the hot and cold faucet control, said apparatus comprising a hollow sleeve member having hot and cold water inlets adapted for connection to the hot and cold water supplies, and first and second outlets, and piston means slidably mounted in said sleeve for movement between a first position in which one of said outlets is blocked and the two inlets communicate with the other outlet and a second position in which said other outlet is blocked and the two inlets communicate with said one outlet, said piston means having an intermediate position between the first and second positions in which said inlets are blocked, said piston means in its movement from the intermediate position to either of the other positions gradually opening the inlets to increase the rate of flow through said inlets to the respective outlet, said first and second outlet are located on opposite sides of said inlets, said inlets being axially aligned and having oblong holes, detent means for holding the piston means in selected ones of said positions and comprising a spring-loaded ball, said sleeve member having a cylindrical bore, said piston means comprising a first piston portion confined for sealed slidable movement in said cylindrical bore, said first outlet being coaxial and coextensive with said bore, said second outlet extending laterally in communication with said bore, said first piston portion in said first position blocking said first outlet and in said second position blocking said second outlet, said pistons means comprising a stem on which said piston portion is secured, said stem being of smaller diameter than said first piston portion, said stem being slidably supported by said sleeve, and a handle on said stem for displacement of said stem and the piston portion thereon, said piston means comprising further a second piston portion secured to said stem in spaced relation from the first piston portion and slidably supported in said cylindrical bore, said stem having two spaced grooves positioned to be respectively engaged by said ball when the piston means is in said intermediate position and in said second position.