Compound Steam Engine, by J and E Hall, c.1838.
Rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838
- Object Number:
- 1968-589/1
- type:
- compound steam engines
Rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838 with driving motor
This engine was built for the Boxmoor Ironworks of J Davis & Bailey, agricultural engineers, of Marlowes near Hemel Hempstead, Hertfordshire. It is an early and significant example of the 'compound' steam engine designed by Arthur Woolf in London in 1804. It had two cylinders, with steam being used in the first and then having expanded in the second, before being condensed back to water in the engine's condenser. This turned as much of the steam's heat energy into kinetic energy as possible, making the engine more efficieint than earlier designs. Compound operation became a mainstay of steam engine design thereafter.
Details
- Category:
- Motive Power
- Object Number:
- 1968-589
- Materials:
- cast iron, wrought iron, steel, gunmetal and paint
- type:
- compound steam engine
- credit:
- J. & E. Hall Ltd.
Parts
Electric Motor Gearbox, and Wheels
Electric motor, gearbox and two large wheels grooved for Fenner belts
- Measurements:
-
overall (Motor): 500 mm x 750 mm x 480 mm,
overall (Gearbox): 630 mm x 730 mm x 500 mm,
overall (wheels, each): 140 mm 1145 mm,
- Object Number:
- 1968-589/2
- type:
- motor
Compound Steam Engine, by J and E Hall, c.1838.
Linkage from rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838
- Object Number:
- 1968-589/4
- type:
- compound steam engine
- Image ©
- The Board of Trustees of the Science Museum
Compound Steam Engine, by J and E Hall, c.1838.
Linkage from rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838
- Object Number:
- 1968-589/5
- type:
- compound steam engine
- Image ©
- The Board of Trustees of the Science Museum
Steam valve from compound Steam Engine, by J and E Hall, c.1838
Steam valve, green handle, threaded flange but without seat, from rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838.
Part from Compound Steam Engine, by J and E Hall, c.1838.
Hexagonal metal component, some rust on all sides, a slightly domed top. Part of a rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838.
- Materials:
- metal (unknown)
- Object Number:
- 1968-589/7
- type:
- component
- Image ©
- The Board of Trustees of the Science Museum
Components from Compound Steam Engine, by J and E Hall, c.1838.
Metal disc component with a central hole, this has a screw thread on. There is evidence of heavy use. Around the plate there are four metal bolts/ screws, with washers. An additional metal piece which also has a screw thread but has a large chunk broken off. Part of rotative compound beam engine built by Messrs. J & E Hall, Dartford, c.1838.
- Materials:
- metal (unknown)
- Object Number:
- 1968-589/8
- type:
- component
- Image ©
- The Board of Trustees of the Science Museum
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