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 |