Abstract: An apparatus is disclosed for producing patching material for filling potholes and the like in paved surfaces which includes a hopper for receiving a quantity of pulverulent material, a tubular discharge mechanism in the bottom of the hopper which employs the Venturi effect created by air under pressure to draw the material into the tube and discharge it through an opening and means for controlling the flow of material into the discharge mechanism. A nozzle is connected to the discharge opening and has means adjacent the orifice thereof for introducing a quantity of asphalt emulsion into the stream of material for mixing therewith prior to discharge from the orifice into the pothole or the like to be filled.