US Patent: 389,095 - Twist-drill-grinding attachment


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US Patent: 389,095

Twist-drill-grinding attachment

Patentee:

Frank Mossberg (exact or similar names) - Pawtucket, RI

USPTO Classifications:

451/375

Tool Categories:

metalworking machines : grinders : drill grinders

metalworking machines : grinders : sharpening machines : drill sharpening machines

Assignees:

None

Manufacturer:

Diamond Machine Co. - Providence, RI

Witnesses:

Warren R. Perce

Albert D. Bean

Patent Dates:
Applied:	Jan. 17, 1887
Granted:	Sep. 04, 1888

Patent Pictures:

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Vintage Machinery entry for Diamond Machine Co.

Description:

The 1889-11-23 The Age of Steel, page 6, has a small illustrated ad for the Mossberg Drill Grinder from the Diamond Machine Co. See also patent 388,784.