Industrial floor cleaning machine with vacuum dust collector

Claim 1

A floor-cleaning machine comprising: a. a housing, said housing being supported by wheels mounted to said housing and spacing said housing a fixed distance from a floor to be worked on; b. a horizontally-positioned, elongated, cylindrical cleaning member in the forward part of said housing, the lower edge of said cleaning member extending through an opening in the bottom of said housing into a position to contact to said floor, a first shaft mounting said cylindrical cleaning member, a driven pulley on each side of said cylindrical cleaning member and affixed to said first shaft, a bearing on each side of said cleaning member mounting said first shaft for rotation, and a manually adjustable mounting means mounting each of said bearings to said housing, each mounting means having adjustable chocks holding said bearings and permitting setting of the spacing of said cylindrical cleaning member from said floor, said mounting means comprising upper and lower opposed vertically disposed threaded screws acting on such chocks; and c. an electric motor driving unit mounted in said housing rearward of said cylindrical cleaning member, said driving unit having a drive shaft, an air impeller mounted to and driven by said drive shaft on each side of said driving unit and configured to expel air from said housing, a drive pulley mounted on each end of said drive shaft to the outside of said air impellers, a drive belt connecting said drive pulley to said driven pulley, and ducts guiding air flowing from said impellers to the exterior of said housing, said housing having a baffle plate for the bottom side thereof that is parallel to and spaced from said floor and supports said driving unit, the forward edge of said baffle plate ending in a downwardly directed ramp that guides debris and air flowing from said lower edge of said cylindrical cleaning member up towards said air impellers.