Floor cleaning machine with foam dispensing system

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;
• means mounted on said housing for supporting said housing for movement along the floor surface;
• supply means in said housing for supplying a cleaning foam;
• brush means mounted under said housing;
• power means in said housing for producing movement of said brush means in the floor plane, relative to said housing;
• said cleaning foam supply means including;
• a supply tank in said housing having a main chamber for containing a liquid solution, means in said main chamber for producing a foam of the solution therein, including a source of compressed air communicating with said tank main chamber for pressurizing said tank and for aerating said solution to produce said foam, elongated transverse trough means in said tank defining a dispensing chamber, adjustable gate means for regulating the flow of solution foam from said supply tank main chamber into said dispensing chamber and dispensing means disposed at the front end of said housing communicating with said dispensing chamber for dispensing cleaning foam onto said floor surface.