| 400 / | HD | TYPEWRITING MACHINES |
| 383 | DF | TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19} |
| 385 | ![]() | .~ With added-motion mechanism for type-bar near print-point {4} |
| 386 | DF | .~.~> Including toggle-linkage |
| 387 | DF | .~.~> Including momentum accumulator |
| 388 | DF | .~.~> Including hammer, roller, or presser mechanism {1} |
| 389 | DF | .~.~> With power assist for mechanism |