Portable sprayer with air operated mixing means

Claim 1

A PORTABLE SPRAYER ADAPTED TO BE CARRIED ON THE BACK OF THE USER AND COMPRISING A SUPPORTING FRAME, MEANS FOR MOUNTING SAID FRAME ON THE BACK OF THE USER, A BLOWER MOUNTED ON SAID FRAME AND HAVING AN OUTLET DIRECTED LATERALLY OF SAID FRAME, A DUCT CONNECTED TO SAID OUTLET TO RECEIVE AIR DISCHARGED FROM SAID BLOWER AND INCLUDING AN ELBOW DIRECTED AT SUBSTANTIALLY A RIGHT ANGLE TO SAID BLOWER OUTLET, A FLEXIBLE HOUSE CONNECTED TO SAID ELBOW TO EXTEND FORWARDLY THEREFROM BESIDE THE USER, AND A NOZZLE CONNECTED TO SAID FLEXIBLE HOSE, A HOPPER SUPERPOSED ABOVE SAID BLOWER AND SAID ELBOW, SAID HOPPER HAVING AN OPENING COMMUNICATING WITH SAID ELBOW, A MIXING DEVICE IN SAID HOPPER, A TURBINE MOUNTED ON SAID HOPPER AND CONNECTED THE MIXING DEVICE TO DRIVE THE SAME, AND A CONDUIT COMMUNICATING AT ONE END WITH SAID ELBOW AND AT ITS OTHER END WITH SAID TURBINE FOR DIVERTING A PORTION OF THE AIR DISCHARGED FROM SAID BLOWER TO SAID TURBINE FOR DRIVING THE SAME.