Manufacturers Index - John Tyler
John Tyler
West Lebanon, NH, U.S.A.
Manufacturer Class:
Steam and Gas Engines
This page contains information on patents issued to this manufacturer.
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USPTO's for finding information on machinery patents.
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12,927
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May. 22, 1855
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Curb for water-wheels
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John Tyler |
West Lebanon, NH |
This is a predecessor to the well-known "Tyler" water wheel of patent 15,309. The features of this 1855 patent were dropped in his subsequent designs. |
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15,309
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Jul. 08, 1856
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Improved water-wheel
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John Tyler |
West Lebanon, NH |
This is the main patent for the important Tyler turbine wheel, which was somewhat similar to the earlier but unpatented Francis turbine water wheel (see patent 39,562 for more on the Francis turbine). Tyler's subsequent improvements were issued as patent 20,456 (reissued as 3,018), 44,240, 52,625, 130,608, and 147,351. This present patent was reissued as 3,015 and then as 4,539, which was applied for and issued after this patent had expired. See that reissue for more information. |
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20,456
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Jun. 01, 1858
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Water Wheel
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John Tyler |
West Lebanon, Grafton County, NH |
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RE3,018
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Jun. 30, 1868
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Water Wheel
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John Tyler |
West Lebanon, Grafton County, NH |
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RE4,539
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Aug. 29, 1871
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Improvement in water-wheels
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John Tyler |
West Lebanon, NH |
This reissue is highly unusual because it was applied for and granted after the original patent had already expired. The original patent was important but despite Tyler's diligent efforts he had not made much money off of it and the Patent Office agreed that he deserved to have the patent claims strengthened and the patent term lengthened. See the link below the patent image for the Patent Office's explanation of this reissue. |
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