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US Patent: 38,119
Improvement in Drill-Bits
Twist Drill Bit
Patentee:
Stephen Ambrose Morse - East Bridgewater, MA

USPTO Classifications:
408/230

Tool Categories:
hand drills : drill bits : twist drill bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James Eaton
Silas Burgess

Patent Dates:
Granted: Apr. 07, 1863

Patent Pictures:
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Description:
Orientation and configuration of the flutes designed to produce a straight cutting edge, with an acute included angle, so that it cuts, rather than scrapes, the metal being bored.

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