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US Patent: 447,553
Machine for Grinding Lathe Centers
Patentee: William Barker (exact or similar names) - Newport, Campbell County, KY USPTO Classifications: 451/436 Tool Categories: metalworking machines : grinders : lathe center grinders metalworking machines : metal lathes : metal lathe accessories and attachments metalworking machines : metal lathes : lathe centers Assignees: None Manufacturer: William Barker & Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Sep. 22, 1890 Granted: Mar. 03, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William Barker & Co.

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