| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 219 | DF | .~.~ Current collectors {7} |
| 238 | DF | .~.~.~ Fixed structure {2} |
| 239 | | .~.~.~.~ Brush holders or rigging {6} |
| 240 | DF | .~.~.~.~.~> Brush-lifting |
| 241 | DF | .~.~.~.~.~> Circumferential adjustment |
| 242 | DF | .~.~.~.~.~> Brush engagements or guides |
| 243 | DF | .~.~.~.~.~> Fluid pressure-operated |
| 244 | DF | .~.~.~.~.~> Brush affixed to pivoted arm |
| 245 | DF | .~.~.~.~.~> Slidable brush {2} |