400 / | HD | TYPEWRITING MACHINES |
191 | DF | INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15} |
223 | DF | .~ Ribbon-feeding mechanism {13} |
235 | DF | .~.~ Drive applied by means directly engaging ribbon in advance of takeup {1} |
235.1 | .~.~.~ Drive applied by pinch-roller couple |