Abstract: A batch mixer for mixing concrete materials into a mixed concrete includes a mixing drum having a plurality of paddles fixed to the drum for rotation with the mixing drum about the longitudinal axis of the mixing drum. The paddles include mixing paddles oriented to urge the concrete materials away from the outlet opening at the second end of the drum when the mixing drum is rotated in the mixing direction, and at least one shearing paddle which is oriented at less than 25 degrees from the longitudinal direction of the mixing drum. The shearing paddles has a main body portion interrupted by shearing apertures through which concrete material are directed and an inner edge which is discontinuous and interrupted by longitudinally spaced teeth.

Abstract: A batch mixer for mixing concrete materials into a mixed concrete includes a mixing drum having a plurality of paddles fixed to the drum for rotation with the mixing drum about the longitudinal axis of the mixing drum. The paddles include mixing paddles oriented to urge the concrete materials away from the outlet opening at the second end of the drum when the mixing drum is rotated in the mixing direction, and at least one shearing paddle which is oriented at less than 25 degrees from the longitudinal direction of the mixing drum. The shearing paddles has a main body portion interrupted by shearing apertures through which concrete material are directed and an inner edge which is discontinuous and interrupted by longitudinally spaced teeth.

Abstract: A batch mixer comprises a mixing drum rotatable about a longitudinal axis extending between an inlet opening and a discharge opening at opposing ends of the drum. Mixing members and transfer members supported in the drum mix the material when rotated in a first direction and transfer the material to the discharge opening when rotated in an opposing direction. An inlet chute for charging the drum and a discharge chute for emptying the drum communicate with the inlet opening and the discharge opening respectively. The inlet chute pivots relative to the drum about a vertical axis from a charging position in communication with the inlet opening to an access position in which the inlet opening is unobstructed by the inlet chute. The inlet end wall locating the inlet opening therein is removable for greater access.

Abstract: A batch mixer comprises a mixing drum rotatable about a longitudinal axis extending between an inlet opening and a discharge opening at opposing ends of the drum. Mixing members and transfer members supported in the drum mix the material when rotated in a first direction and transfer the material to the discharge opening when rotated in an opposing direction. An inlet chute for charging the drum and a discharge chute for emptying the drum communicate with the inlet opening and the discharge opening respectively. The inlet chute pivots relative to the drum about a vertical axis from a charging position in communication with the inlet opening to an access position in which the inlet opening is unobstructed by the inlet chute. The inlet end wall locating the inlet opening therein is removable for greater access.