| 432 / | HD | HEATING |
| 120 | DF | WORK CHAMBER HAVING HEATING MEANS {12} |
| 121 | DF | .~ Having means by which work is progressed or moved mechanically {9} |
| 136 | | .~.~ Combustion products generated in or fed to chamber {4} |
| 137 | DF | .~.~.~> Movable chamber floor section carried by external guide or axle {1} |
| 139 | DF | .~.~.~> Plough, rake, screw, or stirrer means {1} |
| 141 | DF | .~.~.~> Rotatably mounted work carrier (e.g., Ferris wheel type, etc.) {1} |
| 143 | DF | .~.~.~> Having means forming work path from inlet to outlet {5} |