Grazebrook beam engine

It is now found as sentinel sculpture on the Dartmouth Circus roundabout at the entrance of the A38(M) in Birmingham, England.

[citation needed] This is a typical example of an early nineteenth century engine, it comprises a vertical double acting steam cylinder coupled via an 8 metres (26 ft) rocking beam to a double acting air cylinder.

The steam cylinder is 42 inches (1,100 mm) in diameter and has a stroke of 8 feet (2.4 m).

A pressure regulator vessel was fitted to smooth out the air flow.

It provided air at 5 pounds per square inch (34 kPa) to two blast furnaces.