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US Patent: 6,325
Revolving-die spike machine
Ephraim Brown - Lowell, MA
Ammi M. George - Nashua, NH

USPTO Classifications:
144/246.1, 470/135

Tool Categories:

Nathan Richards - Medford, MA
Lucius C. Alexander - Nashua, NH

Not known to have been produced

George King
Frederick Parker

Patent Dates:
Granted: Apr. 17, 1849

Patent Pictures:
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"Vintage Machinery" entry for Ephraim Brown
Of interest because co-inventor Ephraim Brown went on to invent and manufacture treadle-powered woodworking machines. Note that although the patents on either side of this one have a grant date of 1849-04-17, and this patent's drawing has the same date, the patent specification itself is dated 1849-05-18. We have no explanation for the discrepancy.

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