Water level control for swimming pools

Claim 1

A water level control for swimming pools comprising a vertically elongated casing adapted for mounting on a ladder or pool edge, said casing being of interfitting component construction providing a partial horizontal partition dividing the same into upper and lower chambers with free passage of water therebetween, and a partially open bottom permitting water flow to the pool, a ball cock valve and vertically slidable float assemblage secured to said partition and positioned in said upper chamber with the water inlet thereof protruding into said lower chamber and the water outlet thereof being above said partition, said partition having an elongated transverse aperture providing a water passage therethrough, and lateral offsets intermediate the ends of said aperture providing positioning means for said ball cock valve and float assemblage, means detachably coupling said water inlet with a pressure source of water supply, said means comprising conduit means extending downwardly through said partition laterally and upwardly to said water inlet with the upper end of said conduit means protruding from the top of said casing and carrying means for detachable coupling with said pressure source of water supply, and said casing having air vent means communicating with said upper chamber and external side markings aligned with the internal high and low water levels which relate to the closing and opening respectively of said ball cock valve.