| 74 / | HD | MACHINE ELEMENT OR MECHANISM |
| * | DD | MECHANICAL MOVEMENTS {15} |
| 89 | DF | .~ Reciprocating or oscillating to or from alternating rotary {6} |
| 89.1 | DF | .~.~ Including inertia device {1} |
| 89.11 | DF | .~.~.~ With rack and pinion {1} |
| 89.12 | ![]() | .~.~.~.~ Rectilinear rack |