Abstract: An improved biomass gasifier combustor system including a furnace, a screw feeder system for feeding a biomass fuel to the furnace and a venturi eductor system adapted for drawing a gaseous combustion product from a combustion chamber of the furnace is disclosed. The furnace enclosure forms a principal chamber in which a housing containing a secondary air chamber is disposed so as to form a partition in the principal chamber which divides the principal chamber into two regions, one of which regions is a gasification chamber and the other of which is a gas combustion chamber.

Abstract: An improved grain drying apparatus of the type having a bin with a perforated floor through which hot air is blown upward for grain drying purposes, and a rotary sweep assembly employing a wet grain distributing auger on its lag side and a dried grain retrieving auger on its lead side. One improvement includes an inclined elongate plate forming an overflow dam which extends along the floor on the lead side of the retrieving auger and which is connected to the sweep assembly for rotation therewith so as to build up the thickness of dried grain on the floor ahead of the retrieving auger to increase the resistance of the dried grain to the upward flow of hot air on the lead side such that a greater proportion of hot air will flow upwardly through the floor on the lag side through the wet grain being deposited thereon.

Abstract: A reversible rotary sweep has a single railless trough-less contemporaneously reversible 16" OD horizontal long auger and a depending holeformer composed of a 191/2" OD depending short auger and a surrounding 21" ID concentric sleeve. In unloading, a substantial portion of the unloading stream of silage normally flows radially inward along opposite sides of a vertical "unloading plane", extending tangentially to the unloading side of the auger. The upper end portion of the depending sleeve presents a silage overflow edge, which extends slightly below the horizontal bottom tangential plane of the long auger. Horizontally, the overflow edge is long enough to extend from the inner side edge of the unloading stream through the unloading plane to the outer side edge of the stream. As a consequence, the discharging silage, on both sides of said unloading plane, is free to cascade into the sleeve in a free-flowing substantially unobstructed condition.