US Patent: 287
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| Sounding instrument for ascertaining the depth of water in seas, rivers, &c.
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Patentees:
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| Francis B. Ogden (exact or similar names) - Unknown, NJ |
| John Ericsson (exact or similar names) - London, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 19, 1837 |
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Jeff Joslin
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Description: |
| The co-inventors each merit their own wikipedia entry. Francis Barber Ogden was United States Consul, based in Liverpool at the time. His interest in steam engines led him to John Ericsson. Ogden financed Ericsson's inventions and helped him patent them in the USA. In 1833 Ericsson had first demonstrated the hot air, or "caloric", engine; after moving to the US he would continue developing his caloric engine into the 1860s. Nowadays he is primarily remembered as the designer of the USS Monitor. |
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