Abstract: A combustion controller controls the supply of combustion gas to the combustion barrel of a rotary combustor used for incinerating solid waste material. The rotary combustor includes a combustion barrel having a gas-porous side wall and windboxes underneath the combustion barrel to supply the combustion gas to support incineration of the waste material into combustion products which include exhaust gases. The windboxes receive combustion gas via individual control ducts which are controlled by the combustion controller to regulate the corresponding supplies of combustion gas and thereby to provide substantially complete incineration of the solid material. An oxygen sensor detects the percentage of oxygen present in the exhaust gases and the combustion gas supplied to the combustion barrel is controlled to maintain the percentage of oxygen near a predetermined level.

Abstract: An instrument support pedestal having a post pneumatically urged upwardly to counterbalance an instrument on the post, with the post slidably mounted in an elongated extrusion having vessels connected to the post pneumatics to form a large accumulator and another vessel serving as a high pressure reservoir so that the pneumatic force on the post can be varied.

Abstract: A rotary combustor formed of water cooled tubes in an inclined cylindrical array with the lower portion being conical so as to reduce the incline at the lower end. The combustor extends into the cooperating furnace, and is formed with openings between the tubes that increase in size toward the lower end.

Abstract: A rotary combustor, in which material is burned in a gas porous cylinder, having a sectioned and compartmented wind box permitting selective delivery of air through the burning material, above the burning material, at the start of the burning process, and after burning has been well initiated.

Abstract: An arrangement for feeding material to the open end of a combustor including a vertical chute leading to a doorway to the combustor which is normally closed by a biased door, and a stepped ram reciprocating at the bottom of the chute for feeding material through the door and into the combustor.