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US Patent: 82,374
Improvement in Bung-Borers
Patentees:
John G. Baker - Philadelphia, PA
Henry Asbury - Philadelphia, PA

USPTO Classifications:
408/200, 408/208

Tool Categories:
woodworking tools : hand drills : drill bits : tapered reamers

Assignees:
None

Manufacturer:
Unknown

Witnesses:
H. Howson
John White

Patent Dates:
Granted: Sep. 22, 1868

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
The primary aim of this tool is to effectively combine boring and reaming operations in one tool and continuous operation. The lead screw helps pull the tool into the wood, while a gouge shaped cutter at the bottom of the body bores the opening hole - with the reaming cutter to follow.

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