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US Patent: 320,968
Machine for Making Twist Drills
Patentee: Francis H. Richards (exact or similar names) - Cleveland, Cuyahoga County, OH USPTO Classifications: 409/67 Tool Categories: tool making : making drills and augers Assignees: J. D. Cox, Jr. - Cleveland, Cuyahoga County, OH F. F. Prentiss - Cleveland, Cuyahoga County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 15, 1883 Granted: Jun. 30, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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