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US Patent: 447,553
Machine for Grinding Lathe Centers
Patentee:
William Barker - Newport, Campbell County, KY

USPTO Classifications:
451/436

Tool Categories:
metalworking machines : grinders : lathe center grinders
metalworking machines : metal lathes : metal lathe accessories

Assignees:
None

Manufacturer:
William Barker & Co. - Cincinnati, OH

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 22, 1890
Granted: Mar. 03, 1891

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for William Barker & Co.

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