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US Patent: 255,236
Electric drill
Patentee:
Charles E. Ball - Philadelphia, PA

USPTO Classifications:
173/152, 173/217, 173/4, 175/51, 310/66, 408/17, 91/433, 91/459

Tool Categories:
woodworking machines : handheld power tools : handheld drills

Assignees:
Charles A. Cheever - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Robert J. Cummings
Williard L. Candee

Patent Dates:
Applied: Dec. 31, 1881
Granted: Mar. 21, 1882

Patent Pictures:
USPTO pdf tiff
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Description:
Not really a handheld, but is one of the earliest electric drills we have seen. The feed uses hydraulics and the drill itself is a hammer drill that both rotates oscillates back and forth. It is intended, apparently, for drilling rock.

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