414 / | HD | MATERIAL OR ARTICLE HANDLING |
147 | DF | CHAMBER OF A TYPE UTILIZED FOR A HEATING FUNCTION AND MATERIAL CHARGING OR DISCHARGING MEANS THEREFOR {6} |
209 | DF | .~ Discharging of chamber by driven device {3} |
214 | DF | .~.~ Device comprises pushing or pulling mechanism {1} |
215 | .~.~.~ Mechanism repositionable for serving plural chambers |