Beam engine

A beam engine is a design of engine based on the principles of a first-class lever.

A force is applied to one end of a beam, which is pivotted in the middle, and the lever action transfers the force to create work at the other end of the beam. The most familiar example is the type of stationary steam engine used for pumping water from mines. Here the piston of a vertically-mounted cylinder is attached to one end of the beam, to apply the force through upward and/or downward motion. The other end of the beam is connected to a vertically-acting pump. A downward pull on the piston causes the other end of the beam to lift whatever is attached to it, thereby doing 'work'.

Beam engine

The most common engine was the stationary steam-driven type, but water, wind or other forms of propulsion could be used.

Beam engines need not be 'stationary'. The steamboat Eureka is still powered by its rotative beam engine.

Beam engine - Beam engine animation - Beam engine Rotative - Stuart beam engine

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