| 400 / | HD | TYPEWRITING MACHINES |
| 191 | DF | INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15} |
| 218 | DF | .~ Ribbon-reversing mechanism {4} |
| 220 | DF | .~.~ Alternative pawl-and-ratchet drive including ratchet directly connected to spool or spindle {2} |
| 220.2 | ![]() | .~.~.~ Including member interposed in pawl drive path |