Steam Mill at Upminster

3D Model

Modelled by Cliff Featherston
The steam mill was built in 1811 and ran in tandom with the windmill for 123yrs. It was finally demolished in 1960 with most records of it being lost, so this model is based on archaeological evidence and research.
The engine was a modified Boulton and Watt bellcrank engine, which is thought to have first been used in an early Thames dredger barge before being installed at Upminster. The piston was 16in dia with a 2ft stoke and developing 6bhp at 40rpm. The flywheel was 10ft dia, and weighed over 1ton.
The engine drove two pairs of 4ft 6in dia millstones and a sack hoist , and via a set of plain gears the driveshaft was continued into the windmill to assist in powering equipment there.