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Counterbalancing
As seen with the early Egyptian shaduf,
counterbalancing was a natural means of taking the strain off man's muscles
in lifting water from the Nile. First came a force of nature -- the counterbalancing
use of water, using gravity to bring the fluid back to the hydraulic cylinders.
Then, accumulators were used as an equalizing force. Cars balanced one another
and the counterweight in its own runway became a norm that carried through
the electric era. Counterweighting was seen as a resource when steam, hydraulic
or electric power was considered insufficient to alone accomplish the task
at hand. Although the art of counterbalancing might well take the strain
off the power unit, the additional weight on both sides of the cables, chains
or ropes placed additional pressure upon these devices as well as overhead
and machine sheaves, and the structural supports for the entire system. |

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