- an overhead oscillating lever, pivoted at the middle, for transmitting force from a vertical connecting rod below one end to a vertical connecting rod, pump rod, etc., below the other end.
Origin of walking beam
An Americanism dating back to 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for walking beam
There were two of these, with square pistons and a walking-beam between them.
The walking-beam heaved up and down with many a painful creak.Janice Day
Helen Beecher Long
I am sorry to say that three were injured by the falling of the pieces of the walking-beam.Within The Enemy's Lines
But at length, in 1844, the steam-whistle was introduced, and the "walking-beam boys" were left without occupation.Southern Stories
Steam was let in below this plunger, and the walking-beam with which it was connected by a rod had that end of it raised.