US Patent: 963,986 - Combination drill and valve-grinder


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US Patent: 963,986

Combination drill and valve-grinder

Patentee:

Frederick C. Blanchard (exact or similar names) - Bridgeport, CT

USPTO Classifications:

451/117, 74/318, 74/320, 74/323

Tool Categories:

woodworking tools : hand drills : eggbeater drills

woodworking tools : hand drills : breast drills

Assignees:

Ashcroft Mfg. Co. - Bridgeport, CT

Manufacturer:

Ashcroft Mfg. Co. - Bridgeport, CT

Witnesses:

W. R. Clark

James P. O'Neil

Patent Dates:
Applied:	Jan. 20, 1910
Granted:	Jul. 12, 1910

Patent Pictures: [ 1 | 2 ]

Blanchard 963,986; patent drawing's images rearranged

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Description:

Blanchard describes his invention as a combination breast drill, reversible ratchet drill and valve grinder. I have one of these combo drills. It is the smoothest operating breast drill I have.