| 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 | DF | .~.~ Combustion products generated in or fed to chamber {4} |
| 137 | DF | .~.~.~ Movable chamber floor section carried by external guide or axle {1} |
| 138 | | .~.~.~.~ Rotary section |