John Ericsson

John Ericsson (July 31, 1803 – March 8, 1889) was a Swedish inventor and mechanical engineer, as was his brother, Nils Ericson. He was born at Långbanshyttan in Wermelandia, Sweden, but did primarily come to be active in the United States.

Inventions

• The surface condenser
• The ship propeller
• The "hot air engine"
• The USS Monitor for the Union Navy in the American Civil War, was both designed and built by John
• Torpedo technology, especially Destroyer, an advanced torpedo boat.
• The "solar machine", using concave mirrors to gather sun radiation strong enough to run an engine.
• USS Princeton (1843)
• Hoop gun construction