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US Patent: 10,872
Expansion-bit
Patentee:
Asa Weeks - South Boston, MA

USPTO Classifications:
408/152, 408/157, 408/194

Tool Categories:
woodworking tools : hand drills : drill bits : adjustable drill bits

Assignees:
None

Manufacturer:
D. Adams - Unknown, Unknown

Witnesses:
John Murdock
Samuel Cooper

Patent Dates:
Granted: May 02, 1854

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Correspondent Chris Berger reported an example of this bit: "There is a mark 'D. ADAMS' in a small arched logo (no location) on one of the flats of the shank. I did not find 'D. ADAMS' in DAT or any other source."

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