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US Patent: 220,290
Improvement in stocks for grinding and drilling tools
Patentee:
James M. Hunter - 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
USPTO pdf tiff
Google Patents
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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.

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