parallel motion

American  

noun

1. a mechanism arranged so as to impart rectilinear motion to a rod connected to a lever that moves through an arc.

---

Etymology

Origin of parallel motion

First recorded in 1820–30

Example Sentences

At times, sound and image achieve an exhilarating synchronicity, as when stripes are hurtling across the screen and Reich’s instruments are racing in parallel motion.

From The New Yorker • May 20, 2019

"The perfect parallel motion of Peaucellier looks so simple," he observed, "and moves so easily that people who see it at work almost universally express astonishment that it waited so long to be discovered."

From Kinematics of Mechanisms from the Time of Watt by Ferguson, Eugene S.

He called attention to what he termed "compound compasses," a class of linkages that included Watt's parallel motion, the pantograph, and the polar planimeter.

From Kinematics of Mechanisms from the Time of Watt by Ferguson, Eugene S.

I use the term direct acting, because I dispensed with the beam and parallel motion, which was generally considered the correct mode of transferring the action of the piston to the crank.

From James Nasmyth: Engineer; an autobiography by Smiles, Samuel

He converted the reciprocating motion of the piston into a rotary motion by the adoption of the crank, and introduced the well-known parallel motion, and many other improvements.

From Inventions in the Century by Doolittle, William Henry