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US Patent: 906,938
Drill-chuck
Patentee:
Ross M. Russell (exact or similar names) - Elmira, NY

USPTO Classifications:
279/69

Tool Categories:
metalworking machines : drilling and boring : drill presses : drill press chucks
woodworking machines : wood drilling and boring : drill presses : drill press chucks

Assignees:
Russell Anti-Friction Drill Chuck Co. - Elmira, NY

Manufacturer:
Russell Anti-Friction Drill Chuck Co. - Elmira, NY

Witnesses:
John M. McDowell
Wallace W. Seeley

Patent Dates:
Applied: Dec. 17, 1907
Granted: Dec. 15, 1908

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Russell Anti-Friction Drill Chuck Co.
Description:
Improvements to the chuck of patent 539,193.

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