Working model of the double trunk steam engines, as used on HMS 'Minotaur (1867) and HMS 'Northumberland' (1868)

Made:
1845
patentee:
John Penn
maker:
John Penn and Son
modifier:
South Kensington Museum (workshops)

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Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Model of the screw engines of HMS "Minotaur" and "Northumberland" 1865 (on ship structure made in Museum). From a
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Model of the screw engines of HMS "Minotaur" and "Northumberland" 1865 (on ship structure made in Museum). From a
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Model of the screw engines of HMS "Minotaur" and "Northumberland" 1865 (on ship structure made in Museum). From a
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Working model, scale 1:12, of twin-cylinder steam driven double trunk screw engines, as extensively used for screw propulsion on the HMS 'Minotaur' and 'Northumberland' (1865-1868), construction patented, and model made by John Penn and Sons in 1845, mounted on ships hull model showing arrangement of engine mounting points made by South Kensington Museum (Workshops), in glass case on table stand (see note). A Trunk Engine was originally developed to reduce engine height while maintaining a long stroke. The long stroke meant that the engine retained greater power while a low profile was curcial for placing the engine as deep in the ship as possible. This depth was ideally below the waterline in the event of enemy action.

Contemporary builders' model of the trunk engines of HMS 'Northumberland', 1868 and HMS 'Minotaur', 1867 Scale 1;12. These engines employ the 'double trunk' layout patented by John Penn the younger (1805-1878)

Related people

Details

Category:
Marine Engines
Object Number:
1903-30
Materials:
brass (copper, complete, copper (alloy), cotton (textile), oil (unspecified), paint, silver plated, steel (metal), wood (unidentified), zinc alloy)
type:
steam engine - engine
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • engine - power producing equipment
  • furnishing and equipment
  • vehicle - transportation
  • visual and verbal communication
credit:
Penn, J.
status:
Permanent collection

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