| Rating | Solver | Clue |
|---|---|---|
| CAM | Wheel-shaft projection | |
| AXLE | Wheel shaft | |
| BOSS | The enlarged part of a shaft, on which a wheel is keyed, or at the end, where it is coupled to another. | |
| COG | A tooth, cam, or catch for imparting or receiving motion, as on a gear wheel, or a lifter or wiper on a shaft; originally, a separate piece of wood set in a mortise in the face of a wheel. | |
| GUARD | An extension of the deck of a vessel beyond the hull; esp., in side-wheel steam vessels, the framework of strong timbers, which curves out on e... | |
| BEAM | ...n a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel sha... | |
| ECCENTRIC | A disk or wheel so arranged upon a shaft that the center of the wheel and that of the shaft do not coincide. It is used for operating valves in... | |
| ELEMENT | ...n of that which is complex, as a shaft, lever, wheel, or any simple part in a machine; one of the essential ingredients of any mixture; a consti... | |