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US Patent: 461,253
Drilling-machine
Patentee: William F. Barnes (exact or similar names) - Rockford, IL USPTO Classifications: 144/92, 476/57, 74/400, 74/841 Tool Categories: metalworking machines : drilling and boring : drill presses woodworking machines : wood drilling and boring : drill presses Assignees: W. F. & John Barnes Co. - Rockford, IL Manufacturer: W. F. & John Barnes Co. - Rockford, IL Witnesses: A. O. Behel John Barnes	Patent Dates: Applied: Jan. 31, 1889 Granted: Oct. 13, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for W. F. & John Barnes Co.
Description: The patent covers a variable-speed friction-drive mechanism for sensitive drills.

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