Abstract: A plant container includes a growing vessel including a floor, a side wall, and a brim. The floor of the growing vessel is adapted to rest on ground below. The side wall is coupled to the floor and arranged to extend upwardly away from the floor to interconnect the floor and the brim. Together, the floor and the side wall define a soil chamber adapted to receive soil and a plant planted in the soil.

Abstract: A regenerative heating system comprises two heat regenerators 1 and 2 of the type which are operable so that while one is being heated by waste gas the other is heating air for the combustion of fuel. The regenerators 1 and 2 communicate with each other adjacent one end to form a chamber 11 into which fuel gas is injected by means of a fuel pipe 3. The waste gas enters its respective regenerator by way of end 8 and passes through the bed 5 of the regenerator which stores the heat. Air travelling in the opposite direction is heated in the bed 5 and entrains the fuel gas. The steps 12 provide a venturi or choke effect on the air causing the pressure in the regenerator heating air to be lower than that in the regenerator being heated by waste gas. Fuel gas is thereby drawn into the air stream for admixture therewith and ignition for combustion by means of a pilot light 14.

Abstract: A regenerative heating system includes at least a pair of regenerators of the type which are operable so that while one is being heated by waste gas the other is heating air for the combustion of fuel. The system includes a pair of regenerators 1 and 2 which are interconnected adjacent one end to form a chamber 4 having an outlet 8 to discharge waste gas flow into the chamber from one or other of the regenerators. Air nozzles 7 extend into the chamber 4 to inject air into the regenerators 1 and 2 during the air heating cycle of regenerator. The waste gas may be removed by the suction force of a fan or eductor.