| 400 / | HD | TYPEWRITING MACHINES |
| 283 | DF | CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11} |
| 313 | DF | .~ Carriage-return mechanism {5} |
| 317 | DF | .~.~ Including power drive (e.g., electric, spring, etc.) {3} |
| 317.3 | ![]() | .~.~.~ Powered via engagement of a clutch |