Steady flow bin for pulverulent material

1,149,185. Pneumatic conveyers; discharge of hoppers on vehicles. HALLIBURTON CO. 27 June, 1966 [7 April, 1966], No. 28814/66. Headings B8A and B8E. The frusto-conical base portion of a container for powder or granular material is provided with a pair of aeration devices 16 each of which comprises a semi-circular base 20, a wall 18, wedge-shaped porous plates 22 and triangular end walls 24. The opposing end walls 24 of the two devices are spaced apart to form a slot 32 extending from one side of the container to the other. Two alternative discharge pipes, controlled by valves, are provided, one (34), Figs. 2, 4 (not shown), communicating with the interior of the container through an opening 36 in the side wall aligned with the slot 32. The other discharge pipe 38 extends through the container wall and is suspended by braces with its lower end positioned over the centre of the bottom plate 8 of the container. Air is supplied to the chambers beneath the plates 22 through pipes 26.