Floor cleaning machine with vacuum pickup

A machine for treating floor surfaces comprising

• a housing having front and rear ends in relation to normal movement over a floor surface in one direction, and having a generally horizontal floor;
• means mounted on said housing for supporting said housing for movement along a floor surface;
• supply means in said housing for supplying a cleaning medium, including dispensing means disposed at the front end thereof under said housing floor;
• brush means disposed under said housing floor behind and adjacent to said dispensing means;
• power means in said housing for producing movement of said brush means in the floor plane relative to said housing;
• a collection system including a collection tank associated with said housing, an air pump having its suction side communicating with said tank, an elongated suction nozzle disposed under said housing floor behind and adjacent to said brush means, and conduit means communicating said suction nozzle with said collection tank;
• a continuous skirt depending from said housing and defining, with said housing floor and with the floor surface, an enclosure for said dispensing means, said brush means and said suction nozzle;
• and a discharge conduit means communicating the discharge side of said air pump with a discharge port in said housing floor, to direct the pump discharge air into said enclosure for forced drying of the floor surface;
• said discharge port being spaced from the assembly of said dispensing means, said brush means, and said nozzle means to effect substantial exposure of the floor surface to air recirculated from said discharge port to said nozzle means.

A machine for treating floor surfaces comprising

• a housing having front and rear ends in relation to normal movement over a floor surface in one direction, and having a generally horizontal floor;
• means mounted on said housing for supporting said housing for movement along the floor surface;
• supply means in said housing for supplying a cleaning medium, including dispensing means disposed at the front end thereof;
• brush means mounted under said housing behind and adjacent to said dispensing means;
• power means in said housing for producing movement of said brush means in said floor plane relative to said housing;
• said cleaning medium supply means including a sealed supply tank in said housing for containing a liquid solution, a source of compressed air communicating with said tank for pressurizing said tank and for producing a foam of the solution therein, means in said supply tank for agitating and mixing the solution therein, elongated transverse trough means in said tank defining the dispensing means, and adjustable gate means for regulating the flow of solution foam from said supply tank into said trough;
• a collection system including a collection tank associated with said housing, an air pump having its suction side communicating with said tank, an elongated suction nozzle disposed under said housing floor behind and adjacent to said elongated brush means, and a manifold communicating said suction nozzle with said collection tank.