Bearing and seal assembly for motor mixer

An improved mortar mixer having a generally cylindrical mortar mixing drum disposed in a horizontal orientation, and open at the top, and rotatable from a mortar mixing position to a mortar dumping position, and a paddle shaft horizontally aligned and extending through the drum, coincident to the horizontal axis of the drum, said paddle shaft having a plurality of radially extending paddle for mixing mortar, and a power means for rotating said paddle shaft, and a main frame assembly for supporting the power means and a pair of struts attached to the main frame, said struts extending vertically upward from the main frame at each end of the horizontal drum for rotational support of said drum and paddle shaft, wherein the improvement comprises:

• a pair of stationary cylindrical housings each having drum bearing support means therein for rotatably receiving and supporting a drum support shaft, each attached to a vertical strut;
• a pair of hollow, cylindrical drum support shafts, each coaxially aligned and attached at a first end to an end of the rotatable drum, and inserted into a stationary housing for support by and rotation against said drum bearing support means, said drum support shafts further having paddle shaft bearing support means disposed within said drum support shafts for receiving and supporting the rotatable paddle shaft;
• paddle shaft seal means for preventing the discharge of grease from the paddle shaft bearing support means to the outside of the seal assemblies;
• said stationary housings each having a hole therethrough for injection of grease between the stationary housings and the drum support shafts for lubricating the drum bearing support means and for facilitating the injection of grease into the hollow, cylindrical drum support shafts;
• and
• said drum support shafts each further having a hole therethrough for injection of grease into said drum support shafts for lubricating the paddle shaft bearing support means and paddle shaft seal means.