US Patent: 220,290 - Improvement in stocks for grinding and drilling tools


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US Patent: 220,290

Improvement in stocks for grinding and drilling tools

Patentee:

James M. Hunter (exact or similar names) - Boston, MA

USPTO Classifications:

451/344, 81/34

Tool Categories:

woodworking tools : hand drills : eggbeater drills

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

G. G. Mann

A. F. Curtis

Patent Dates:
Applied:	Mar. 03, 1879
Granted:	Oct. 07, 1879

Patent Pictures:

Hunter 220,290

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Description:

As titled this hand drill is designed for use as a grinder or drill. The pinions and main plate are not geared but held to each other via a spring loaded mechanism.