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US Patent: 230,603
Countersink
Patentee:
D. Fletcher Barber - Newton, MA

USPTO Classifications:
408/200

Tool Categories:
woodworking tools : hand drills : drill bits : countersinks
woodworking tools : hand drills : drill bits : spoke pointers

Assignees:
None

Manufacturer:
D. F. Barber - Boston, MA

Witnesses:
William Zittel
J. E. Maynadike

Patent Dates:
Applied: Apr. 26, 1880
Granted: Aug. 03, 1880

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Unique claim is for reversible cutters, allowing this bit to be used for spoke pointing as well as countersinking.

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