| 74 / | HD | MACHINE ELEMENT OR MECHANISM |
| 469 | DF | CONTROL LEVER AND LINKAGE SYSTEMS {8} |
| 491 | DF | .~ Hand operated {4} |
| 492 | DF | .~.~ Steering posts {4} |
| 496 | DF | .~.~.~ Motion translating mechanism {2} |
| 498 | ![]() | .~.~.~.~ Gear type {2} |
| 499 | DF | .~.~.~.~.~> Screw and nut |
| 500 | DF | .~.~.~.~.~> Worm |