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US Patent: 105,543
Improvement in Machine for Sharpening Saws
Patentee:
John Atkinson Borthwick - Philadelphia, PA

USPTO Classifications:
451/236, 76/40

Tool Categories:
woodworking machines : circular saws : annular saws

Assignees:
None

Manufacturer:
Henry Disston & Sons - Philadelphia, PA

Witnesses:
Frank B. Richards
Louis Boswell

Patent Dates:
Granted: Jul. 19, 1870

Patent Pictures:
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"Vintage Machinery" entry for Henry Disston & Sons
Description:
Sharpener on swinging frame and constructed and jointed to enable the saw blade to be sharpened in place without removing the blade.

Available in 1876 Disston Price List

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