425 / | HD | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
135 | DF | CONTROL MEANS RESPONSIVE TO OR ACTUATED BY MEANS SENSING OR DETECTING A CONDITION OR MATERIAL TRIGGERED {8} |
145 | .~ Feed control of material en route to shaping area {3} | |
146 | DF | .~.~> By pressure actuated valve |
147 | DF | .~.~> By stopping or adjusting flow responsive to material level in collector or mold |
148 | DF | .~.~> By means responsive to weight of feed material |