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Patent number:
Patent Date:
US Patent: 358,731
Countersink
Patentee:
Hiram Clark (
exact
or
similar
names) - Syracuse, NY
USPTO Classifications:
408/187
Tool Categories:
woodworking tools
:
hand drills
:
drill bits
:
countersinks
Assignees:
None
Manufacturer:
Syracuse Twist Drill Co.
- Syracuse, NY
Witnesses:
A. D. Allen
Wm. C. Raymond
Patent Dates:
Applied:
Dec. 06, 1886
Granted:
Mar. 01, 1887
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin (dm)
Description:
Segmented construction which provides for separating the two cutting lips for ease of sharpening.
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