US Patent: 73,238
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| Improvement in circular saws
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Patentee:
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| Henry Disston (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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| Granted: |
Jan. 14, 1868 |
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Patent Pictures:
[
1 | 2
]
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Russ Allen.
"Vintage Machinery" entry for Henry Disston & Sons
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Description: |
| Circular saw patented gullet tooth. Each tooth has the back edge formed as an arc of a circle with the center eccentric with the center of rotation (image 2). Sharpening lines of teeth continue to ensure that same number of teeth remain as the saw diameter is reduced thru sharpening. Use of one of Disston's patented gummer is referenced.
Prominently displayed in the 1876 Price List |
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