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US Patent: RE4,516
Improvement in Machines for Manufacturing Auger-Bits
Machine for Upsetting Cook's Bits
Patentee:
James Swan - Seymour, CT

USPTO Classifications:
76/2

Tool Categories:
tool making : making drills and augers
woodworking tools : hand drills : drill bits : auger bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George W. Maber
T. B. Mosher

Patent Dates:
Granted: Aug. 15, 1871

Reissue Information:
Reissue of 78,769 (Jun. 09, 1868)
Reissued as RE5,624 (Oct. 21, 1873)

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
Description seems to be identical with the original patent.

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