226 / | HD | ADVANCING MATERIAL OF INDETERMINATE LENGTH |
120 | DF | BY INTERMITTENT (INTERRUPTED) MATERIAL-MOVER {13} |
158 | DF | .~ Comprising reciprocating or oscillating material-mover {5} |
162 | .~.~ With means to move grip element into material engagement {2} | |
163 | DF | .~.~.~> Comprising link positively connected to element {1} |
165 | DF | .~.~.~> Comprising camlike surface {1} |