Abstract: A mixer with a substantially conical mixing chamber supported vertically with its apex lowermost. A tapered auger is situated in the mixing chamber and mixer drive is provided at the base of the mixing chamber. The narrowmost end of the tapered auger is connected to the drive such that the auger rotates around its own axis and its upper end rolls around the upper periphery of the mixing chamber.The upper end of the auger has a wheel to allow the auger to freely roll around the upper periphery of the mixing chamber and to insure that the auger does not contact the walls of the mixing chamber. The wheel is held in contact with the upper periphery of the mixing chamber under the action of the weight of the auger.

Abstract: A mixer comprising a substantially trough shaped bin said bin being substantially rectangular when viewed in plan, the lower portion of each of the side walls of said bin slope inwardly to form a central longitudinal channel at the bottom of said bin, a 1st pair of horizontally mounted longitudinal augers situated in said trough and rotatably driven so as to feed from the front to the rear of the bin and also cause the feed to be fed upwardly and away from the centre of said trough, a 2nd pair of horizontally mounted longitudinal augers positioned wider apart and above 1st said pair and caused to rotate and feed in the same direction as 1st said augers.