US Patent: 117,786 - Improvement in Plug-Cutters for Wood-Workers


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US Patent: 117,786

Improvement in Plug-Cutters for Wood-Workers

Patentee:

Daniel S. Kniffen (exact or similar names) - West Camden, NY

USPTO Classifications:

408/186, 408/68, 408/86

Tool Categories:

woodworking tools : hand drills : drill bits : hollow bits

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Alex. Selkirk

James A. Buckbee, Jr.

Patent Dates:
Granted:	Aug. 08, 1871

Patent Pictures:

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Description:

This plug-cutter has a center point, to start the cut accurately, which is mounted on a cylinder which retreats back into the bit as the cut progresses.