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US Patent: 752,223
Variable-speed mechanism
Patentee:
Charles S. Hisey (exact or similar names) - Dayton, KY

USPTO Classifications:
74/354

Tool Categories:
handheld power tools : handheld power drills

Assignees:
Hisey-Wolf Machine Co. - Cincinnati, OH

Manufacturer:
Hisey-Wolf Machine Co. - Cincinnati, OH

Witnesses:
Luise Beck
Oliver B. Kaiser

Patent Dates:
Applied: Oct. 22, 1903
Granted: Feb. 16, 1904

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Hisey-Wolf Machine Co.

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