| 400 / | HD | TYPEWRITING MACHINES |
| 191 | DF | INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15} |
| 218 | DF | .~ Ribbon-reversing mechanism {4} |
| 219 | DF | .~.~ Including means responsive to depletion of ribbon supply {4} |
| 219.2 | ![]() | .~.~.~ Including lever retained in spool by wound ribbon |