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US Patent: 750,744
Portable drill
Patentee:
James F. Willey - Jeffersonville, IN

USPTO Classifications:
173/217, 173/30, 310/50, 408/124

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

Assignees:
None

Manufacturer:
James Clark Jr. Electric Co. - Louisville, KY

Witnesses:
W. S. Gould
James Clark, Jr.

Patent Dates:
Applied: Mar. 05, 1903
Granted: Jan. 26, 1904

Patent Pictures:
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Jas. Clark Jr. Electric v. U.S. Electrical Tool Co.
"Vintage Machinery" entry for Jas. Clark Jr. Electric Co.
Description:
This patent was the subject of litigation. Its licensee, James Clark, Jr. Electric Co., sued United States Electrical Tool Co. for infringement but lost because "the alleged infringing device was in public use more than two years before application for the patent was filed." In Willey's design the drill chuck is driven by shaft turned by reduction gearings. The lawsuit was not filed until a decade after the patent was issued and 14 years after the designer of the alleged infringing product, had created has first version of it using the same reduction-gear-driven chuck. This delay created a hardship for the defense and the court took that hardship into account when assessing the quality of the evidence presented.

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