Tile cleaning device for removing calcium build-up in pools

A tile cleaning device for removing calcium buildup from tile which occurs substantially at and above a liquid level in a pool or the like comprising in combination:

• a frame means supported on wheels adapted to circumscribe a pool about its associated ledge, brush means supported by said frame means oriented to contact the pool tile, and means to automatically power one of said wheels independent of other wheels which carry the frame, said one powered wheel oriented to provide a turning moment about said frame such that said frame circumscribes the pool along its associated ledge and the turning moment is resisted by said brush means, whereby pressure is applied to said brush means by the turning moment against the tile and causes said frame to circumscribe the pool,
• said frame embodied as a plate having a rearwardly extending portion upon which a trailing wheel is provided, said brush means formed as a plurality of radially extending fingers having a looped end and formed from braided wire, a belt means underlying said frame connecting a motor to said brush means, and means for angulating an outboard wheel of said frame including first and second spaced plates interconnected by means of bolts, said bolts further supporting a nut thereon, and a threaded shaft extending through said nut and fixed to a frame housing, said frame housing causing vertical translation of said spaced plates upon rotation of said threaded shaft, said spaced plates connected to the outboard wheel to alter the angulation thereof.