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US Patent: 622,212
Twist-drill grinder
Patentee:
Rufus Dutton (exact or similar names) - Sing Sing, NY

USPTO Classifications:
29/DIG.09, 451/375, 451/442, 451/65

Tool Categories:
metalworking machines : grinders : drill grinders

Assignees:
Mary C. Dutton - Sing Sing, NY

Manufacturer:
Not known to have been produced

Witnesses:
Bernard J. Isecke
Henry V. Brown

Patent Dates:
Applied: Dec. 31, 1897
Granted: Apr. 04, 1899

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Description:
The inventor was deceased and Mary C. Dutton was his "executrix".

This drill grinder uses the face and not the sides of the grinding wheel.

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