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US Patent: 186,890
Improvement in screw-cutting dies
Patentee: Albert J. Smart (exact or similar names) - Greenfield, MA USPTO Classifications: 408/162, 408/180 Tool Categories: industrial tools : taps and dies metalworking tools : taps and dies Assignees: Wiley & Russell Manufacturing Co. - Greenfield, MA Manufacturer: Wiley & Russell Manufacturing Co. - Greenfield, MA Witnesses: Dwight B. Kellogg Philipp Tubalt	Patent Dates: Applied: May 10, 1876 Granted: Jan. 30, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Wiley & Russell Manufacturing Co.

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