Abstract: A heat recovery device for use with a portable incinerator. The heat recovery device comprises first and second legs which support a heat exchanger thereon. An air flow path is formed from the bottom to the top of the first leg, through the heat exchanger and from the top to the bottom of the second leg. An open space is provided between the two legs and below the heat exchanger. A portable incinerator may be placed within this open space. When solid waste is burned within the incinerator, the exhaust port of the incinerator lies below the heat exchanger. A blower attached to the lower portion of the first leg creates air flow through the heat recovery device such that the air is heated in the heat exchanger by heat produced from the exhaust port of the portable incinerator. A tube is then coupled to the second leg in order to direct the heated air flow to the interior of an adjacent building.

Abstract: A dual drum skimmer is provided for the removal and recovery of oil floating on water. The skimmer includes two oil pick-up drums 11 and 12 arranged along a common axis which pick up oil and deposit it in a collection trough 16. Oil deposited in the collection trough 16 is directed to a reservoir trough 22 arranged on the opposite side of the drums 11 and 12 from the collection trough 16. The drums are formed as hollow, closed cylinders and, together with the reservoir trough 22, provide the total buoyancy necessary to float the skimmer. The skimmer is particularly effective in shallow and in trash laden water and can operate in water depths of as little as three inches.