GB Patent: GB-181,503,887
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| Improvements in the construction of locomotive engines
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Patentees:
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| George Stephenson (exact or similar names) - Kellingworth, county Northumberland, England |
| Ralph Dodds (exact or similar names) - Kellingworth, county Northumberland, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Feb. 18, 1815 |
Espacenet patent
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Jeff Joslin
Wikipedia page on George Stephenson
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Description: |
| Stephenson was appointed engine-wright of the Killingworth Colliery in 1812. His early creations used fixed engines to haul coal-carts, but by 1814 he built a locomotive with on-board engine, "Blücher". At the time, many believed that a locomotive engine powering the wheels was impractical because of the lack of friction between wheels and track. According to a report in the 1814 Annals of Philosophy, Blücher moved at 3 m.p.h. and pulled 14 wagons each carrying two tons of coal. Stephenson then designed a series of improvements, including a ball-and-socket joint between the engine and the driven wheels. The other two wheels of the four-wheel locomotive were connected by chain drive to the driven wheels. In 1815 Stephenson, with overseer Ralph Dodds, obtained this patent and then built a new locomotive based on the patent design. Subsequent improvements can be found in the 1816 patent GB-181,600,000. |
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