Fluent and nonfluent material mixer

A mixer for fluent and nonfluent material, comprising,

• a mixer tank including forward and rearward end walls, a bottom wall and opposite sidewalls,
• said bottom wall including a curved wall portion defining the bottom of a main chamber,
• a rotor including a plurality of elongated rotor bars adjacent the outer periphery thereof,
• means for supporting said rotor in said main chamber for rotation in a direction for movement of said rotor bars across said curved wall portion,
• said rotor having a diameter such that said rotor bars travel in an arc substantially conforming to and adjacent to said curved wall portion,
• drive means for rotating said rotor,
• means for supporting said rotor bars for movement radially of said rotor and means for urging said rotor bars radially outwardly of said rotor,
• at least one elongated wiper rigidly connected to a rotor bar for wiping contact with said curved wall portion in response to movement of said rotor bar thereacross and said urging means biasing said wiper towards said curved wall portion, and
• means for preventing any rotational movement of said rotor bar and thereby maintaining a substantially consistent and uniform angle between said wiper and said curved wall portion.