Abstract: A main wheel rotating in a vertical plane has marble receiving notches in opposite sides of its periphery. Uprights on opposite sides of the wheel support the wheel shaft and a transfer tray with reverse inclines over the wheel. A smaller drive wheel connected to the shaft has angularly spaced lift pins around a half of its periphery. The pins engage notches in the side of a vertically reciprocable lift bar having an elevator plate on its top. The lift bar is guided along the edge of one upright between a raised position in which the elevator plate transfers marbles to the upper edge of the incline, and a lower position in which the elevator plate is located alongside of the main wheel and radially inwardly from the peripheral notches therein. An intermediate transfer shelf is fixedly supported by the one upright to receive marbles discharged from one of the peripheral notches in the main wheel.