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US Patent: 203,384
Improvement in hollow augers
Patentee:
George N. Stearns - Syracuse, NY

USPTO Classifications:
30/495

Tool Categories:
hand drills : drill bits : hollow bits

Assignees:
None

Manufacturer:
Edward C. Stearns & Co. - Syracuse, NY

Witnesses:
J. J. Greenough
P. B. McLennan

Patent Dates:
Applied: Jun. 15, 1876
Granted: May 07, 1878

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"Vintage Machinery" entry for G. N. Stearns
Description:
"This invention relates to the class of tools termed 'adjustable,' and is designed for cutting tenons of different sizes and lengths, and to obviate the necessity of using a separate auger for each sized tenon."

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