Liquid driven rotary brush with liquid soap feeder

Claim 1

A rotary brush comprising a casing having a cylindrical wall and first and second end walls, each having a central aperture, said casing formed of two sections, each including an end wall and a portion of said cylindrical wall, means to interconnect said cylindrical wall portions in end-to-end relation, the section including the second end wall having a skirt projecting beyond said second end wall, a hollow handle secured to and laterally extending from said cylindrical wall, a water feed pipe extending within said handle, having an outer end formed with means for connection to a water supply under pressure and an inner end defining a nozzle directed within said Commissioner of Patents and Trademarks February 3, 1983 casing, a hollow shaft extending within and coaxial with said casing, said shaft having a first end fixed to said first end wall and surrounding the central aperture of the latter, and a free end portion extending through the central aperture of said second end wall and beyond the latter, said free end portion being closed, except for a small discharge opening, a paddle wheel including a hub and radial paddles, the hub mounted on said shaft with the paddles extending in said casing to be impinged upon and rotated by a water jet issuing from said nozzle, said hub having an extension protruding through said central aperture of said second end wall and defining a radially-outwardly extending annular shape brush bristle-carrying portion axially spaced from and overlying said second end wall and having a free circular edge portion in sliding and rotational engagement with said skirt, brush bristles carried by said bristle-carrying portion and extending therefrom in a direction away from said end wall, axially of said shaft, to form an annular brush with a central open space, said second end wall and said brush-carrying portion having a plurality of holes allowing water within said casing to flow into said central space, said small discharge opening exposed within said central space, a flexible cap closing the central aperture of said first end wall and the first end of said hollow shaft, and means to fill said hollow shaft with a liquid detergent, pressure exerted on said flexible cap causing detergent to flow into said central space through said small discharge opening.