| 400 / | HD | TYPEWRITING MACHINES | 
| 283 | DF | CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11} | 
| 319 | DF | .~ Carriage-feed mechanism (e.g., escapement, etc.) {14} | 
| 333 | DF | .~.~ Universal-bar or actuator therefor {3} | 
| 333.3 |  | .~.~.~ Actuated by type-bar or type-bar action |