Agitating mixing apparatus

An agitating mixing apparatus comprising two rotary shafts separately rotatable independently of each other, one of which said rotary shafts extends through and is coaxial with the other, and a hollow longitudinal tank adapted to hold various kinds of materials characterized by two opposite planar closed ends thereby defining said longitudinal tank having a body with corners at the meeting of said closed ends with a longitudinal container wall body, means affixed to said two closed ends mounting said tank at a fixed angle to one said rotary shaft to rotate therewith with all the tank corners gyrating about the shaft axis, agitation and mixing accelerating blades fitted within said tank longitudinally along the one of said rotary shafts which extends through the other rotary shaft, separate means for rotating respectively said two rotary shafts independently of each other at variable speeds to affect rotation of said tank and said blades by said rotary shafts in a manner related to said mounting angle whereby the materials in said tank are caused to reciprocate diagonally about the blades in a figure 8 pattern.