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US Patent: 73,238
Improvement in circular saws
Patentee:
Henry Disston (exact or similar names) - Philadelphia, PA

USPTO Classifications:
76/36, 83/853

Tool Categories:
woodworking machines : machine and tool cutters : saw teeth

Assignees:
None

Manufacturer:
Henry Disston & Sons - Philadelphia, PA

Witnesses:
C. E. Foster
W. J. R. Delany

Patent Dates:
Granted: Jan. 14, 1868

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for Henry Disston & Sons
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.

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