US Patent: 102,829 - Improvement in Boring Bits


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US Patent: 102,829

Improvement in Boring Bits

Patentee:

Daniel Kelly (exact or similar names) - Muskegon, MI

USPTO Classifications:

408/213

Tool Categories:

woodworking tools : hand drills : drill bits

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

H. J. Hoyt

Charles C. Chamberlin

Patent Dates:
Granted:	May 10, 1870

Patent Pictures:

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Description:

Of his bit, Kelly says:

"It consists in providing the stock of the tool with the spur commonly used in center-bits, and on the opposite side with a cutter formed of a half convolution of a srew; also, in providing the elongaed point with a cutting-lip, the whole forming a more durable bit than any now in use, and easier to operate."