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US Patent: 133,440
Improvement in Gimlets
Patentee:
Charles L. Griswold - Chester, CT

USPTO Classifications:
81/28

Tool Categories:
woodworking tools : hand drills : gimlets

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Eli H. Wilcox
Joseph E. Silliman

Patent Dates:
Granted: Nov. 26, 1872

Patent Pictures:
USPTO pdf tiff
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Description:
The bits for this gimlet handle are bent into an L-shape to resist spinning in the handle. The handle is in two parts to allow the bits to be installed, and has several L-shaped sockets to accommodate bits of various diameters. Griswold followed up with an improvement the next year 143142.

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