|Coal, Boilers, Chimney and Smoke
Coal for Crofton was originally delivered by canal from the Somerset Coal field. it was unloaded on a specially constructed wharf just below Crofton Lock and then brought up to the Station via an iron tramway………..
|How do you drive the engine?
To start the engine, the driver eases open the steam throttle valve until the in-house side of the beam begins to descend. The driver cannot see the beam, instead he relies upon observation……….
|The Cornish Cycle
Both of the engines at Crofton employ the Cornish Cycle, so called because it was developed by Cornish engineers for use in their tin mine pumping engines. The Cornish Cycle combines the use of steam pressure……..
|The Waggon Boiler
The Waggon Boiler (so called because its shape was similar to the American Pioneer Waggon) was used by James Watt in the 1700’s to power his stationary steam engines. It was one of the earlier designs of steam boiler. Like James Watt’s Engines, Waggon Boilers were not designed………
|The Cornish Boiler
The Cornish Boiler was one of a number of attempts by various steam engineers to overcome the limitations of designs such as the Waggon and the Haystack boiler………
|The Lancashire Boiler
Lancashire Boilers are related to, and derived from, the Cornish boiler in that they have tubular metal furnaces passing through a horizontal cylindrical water space with external multiple pass flues. However they differ from Cornish boilers……..
|The water pumps
Crofton’s No.1 engine uses a lift pump, whereas the No.2 engine has a force pump. Force pumps were developed and adopted by Cornish engineers in preference to lift pumps because the pump plunger and its operating rod stand to one side of the rising main……..
|Key facts summary|
A collection of short pieces of information.
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