Abstract: In an incinerator having a housing structure defining a combustion chamber provided with a pair of side walls, a stoker disposed in the combustion chamber between the side walls and an underfire air system, an overfire air system generally consisting of a first means for injecting a variable volume of air under pressure into the combustion chamber at a level above the stoker, and second means for injecting a variable volume of air under pressure into the combustion chamber at a level above the stoker, a second variable volume air injecting means including means for conveying air supplied to the combustion chamber in heat exchange relation with at least one side wall of the combustion chamber for cooling such wall.

Abstract: An assembly for feeding refuse from a charging chute of an incinerator onto a stoker disposed in the incinerator comprising a stationary support means disposed adjacent the stoker, stationary guide means mounted on the support means in alignment with the stoker, a first movable support means mounted on the stationary support means, movable along a line of travel disposed in alignment with the stoker and having a first ram means operable to advance refuse received from the charging chute toward the stoker upon advancement of the first movable support means, a second movable support means mounted on the first movable support means, movable along the line of travel and having a second ram means operable to advance refuse received from the charging chute toward the stoker upon advancement of the second movable means, means for displacing the first movable means along the line of travel, and the first movable means having means for engaging the second movable means whereby upon advancement of the first movable mea