wheel and axle

American  

noun

1. a simple machine consisting, in its typical form, of a cylindrical drum to which a wheel concentric with the drum is firmly fastened: ropes are so applied that as one unwinds from the wheel, another rope is wound on to the drum.

---

wheel and axle British  

noun

1. a simple machine for raising weights in which a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with or joined to the wheel to provide mechanical advantage

---

Etymology

Origin of wheel and axle

First recorded in 1765–75

Example Sentences

A molecular rotor consists of a central rotating molecule that is connected by axis molecules to stationary stator molecules, similar to the way that a wheel and axle are connected to a car frame.

From Science Daily • Sep. 29, 2023

“Future investigative activity will focus on failure analysis of the subject wheelsets and on industry-wide standards and practices for railcar wheel and axle assembly processes, specifications, and quality control,” the safety board said Monday.

From Seattle Times • Mar. 20, 2023

The safety board also said it was examining industry-wide standards and practices regarding railcar wheel and axle assemblies after a train derailment in Ohio earlier this month.

From Seattle Times • Mar. 20, 2023

Primarily, in the form of a wedge, a pulley, a wheel and axle, an inclined plane, a screw or a lever.

From The Wonder Island Boys: The Mysteries of the Caverns by Finlay, Roger Thompson

An extremely important form of wheel and axle is that in which the two wheels are connected by belts as in Figure 114.

From General Science by Clark, Bertha M.