US Patent: 59,950
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| Improved Machine for Sharpening Saws
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Patentee:
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| John Borthwick (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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| Granted: |
Nov. 27, 1866 |
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Russ Allen.
"Vintage Machinery" entry for Henry Disston & Sons
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Description: |
| Utilizes an emery rim or ring instead of a solid emery wheel or file in conjunction with a flange and plate to hold the saw.
Several reference to the ease of use and the ability of children to operate the device.
Available according the 1876 Disston catalog. |
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