US Patent: 1,323,452 - Machine for Grinding Tools


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US Patent: 1,323,452

Machine for Grinding Tools

Patentee:

Stuart A. Cogsdill (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:

451/217, 451/237, 451/239, 451/246, 451/376, 451/915

Tool Categories:

metalworking machines : grinders : tool grinders

Assignees:

None

Manufacturer:

Cogsdill Mfg. Co. - Detroit, Wayne County, MI

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 24, 1918
Granted:	Dec. 02, 1919

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cogsdill Mfg. Co.

Description:

Claim:

A machine for grinding combined countersinks and drills, comprising a grinding mechanism for forming the drill portion of the tool and also forming the countersink portion of the tool, and means for automatically forming a radial relief portion on said tool while being ground.