Apparatus for mixing molding sand

Abstract From the Canadian patent

Continuous Molding Sand Mixer Having, Reverse Pitched Blades Abstract of the Disclosure, A continuous molding sand mixer comprises an elongated tub having a head end, a tail end an elongated, shaft extending axially within the tub an entry port at the, head end of the tub and a discharge opening at the tail end of the tub. A series of paddles are mounted on the shaft substantially equidistant therefrom and adjacent the tub wall Power means are provided to rotate the shaft. Most of the paddles are forwardly pitched in one direction to advance sand along the tub from its head end toward its tail end and out said discharge opening when the shaft rotates. Some of said paddles are reversely …