Abstract: An oil burner for distillate fuel including a blower and air guiding elements producing a rapidly whirling pattern of combustion air close to the burner nozzles to produce an extremely hot fireball close to the nozzles. The fireball, once ignited, provides reliable continuous ignition of the entering fuel, obviating the usual requirement of continuous electrical ignition, and permitting the use of low voltage for the initial ignition. The blower produces an excess of air over that needed for combustion, and the excess air cools the combustion chamber externally to obviate any necessity of forming the chamber of stainless steel, cast iron or the like. When the burner includes a plurality of burner nozzles intended for use singly or simultaneously, automatic means are provided for supplying the necessary carefully regulated amounts of combustion air.

Abstract: A grain drying apparatus including a body member into which grain is fed, within which heated air passes through the grain bed to dry it, and from which it is discharged by a metering device, the retention time of the grain in the drying zone being determined by its rate of discharge, the discharge rate of the metering device being variable, and a modulating control system for regulating the metering device to vary its discharge rate in generally direct ratio to grain temperature attained within the drying zone, whereby continuous discharge of grain at a predetermined moisture content is obtained despite variations in the moisture content of the grain supplied to the drying zone.