| 74 / | HD | MACHINE ELEMENT OR MECHANISM |
| 640 | DF | GEARING {31} |
| 325 | DF | .~ Interchangeably locked {11} |
| * | DD | .~.~ Slidable keys or clutches {3} |
| * | DD | .~.~.~ Single clutch shaft {3} |
| 376 | DF | .~.~.~.~ Single speed forward and reverse {3} |
| 379 | ![]() | .~.~.~.~.~ Bevel and idler gears |