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US Patent: 461,253
Drilling-machine
Patentee:
William F. Barnes - 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 pdf tiff
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"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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