Method and apparatus for applying liquid and dry lawn treatment materials

A self-contained, manually propelled apparatus for applying wet and dry lawn treatment materials comprising:

• hopper means for containing a load of dry treatment material, frame means undersupported on ground engaging wheels for carrying said hopper means in an elevated position and including manually engageable handle means whereby to manually propel the apparatus over the terrain;
• rotatably driven impeller means mounted beneath said hopper means for receiving dry materials discharged therefrom, means for rotatably driving said impeller means in response to manual propulsion of the apparatus;
• said impeller means being operable to centrifically broadcast dry materials in a generally horizontal pattern above the level of said wheels;
• selectively operable means for controlling discharge of dry materials to said impeller means;
• sealed pressure tank means supported on and extending about the outer periphery of said hopper means for storing liquid and having liquid inlet and outlet means, electrically driven pump means carried by said frame means for pressurizing said liquid and having hydraulic circuit communication with said inlet and outlet means, plural laterally spaced spray nozzles supported on said frame means forwardly of said impeller and wheels and in hydraulic circuit communication with said pump means;
• said nozzle means being individually operable to spray liquid treatment materials in selected patterns forwardly in advance of the apparatus and beneath the discharge pattern of dry materials broadcast from said impeller means;
• electrically operated valve means for independently controlling the discharge of liquid from each of said nozzle means, and plural electrical switch means for electively controlling said valve means for individual and simultaneous operation.