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US Patent: 21,160
Variable-Boring Bit
Patentee:
William Tucker (exact or similar names) - Gloucester, RI

USPTO Classifications:
408/213

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Martin
Albert M. Hewitt
Patent Dates:
Granted: Aug. 10, 1858

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin (dm)
Description:
Eccentric cutter provides capacity for the bit to bore holes of various sizes.

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