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US Patent: 46,521
Screw Threading Machine
Improved Milling Machine
Patentee:
Joseph R. Brown - Providence, RI

USPTO Classifications:
144/134.1, 409/228, 74/813R

Tool Categories:
metalworking machines : milling machines

Assignees:
J. R. Brown & Sharpe - Providence, RI

Manufacturer:
J. R. Brown & Sharpe - Providence, RI
Brown & Sharpe Mfg. Co. - Providence, RI

Witnesses:
Isaac A. Brunell
Samuel Barratt

Patent Dates:
Granted: Feb. 21, 1865

Patent Pictures: [ 1 | 2 | 3 | 4 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Brown & Sharpe Mfg. Co.
American Precision Museum

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