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US Patent: 286,663
Grinding Machine for Producing the Relief on Twist and Fluted Drills
Patentee:
Henry F. Wheeler (exact or similar names) - Leominster, Worcester County, MA

USPTO Classifications:
451/216, 451/239

Tool Categories:
metalworking machines : grinders : tool grinders
tool making : making drills and augers

Assignees:
Union Twist Drill Co. - Leominster, Worcester County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 04, 1883
Granted: Oct. 16, 1883

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Union Twist Drill Co.

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