US Patent: 289,126 - Expansion-Bit


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US Patent: 289,126

Expansion-Bit

Patentee:

George Nichols (exact or similar names) - Seymour, CT

USPTO Classifications:

408/195, 408/212

Tool Categories:

woodworking tools : hand drills : drill bits : adjustable drill bits

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Maria L. Parker

S. Hart Culver

Patent Dates:
Applied:	Sep. 24, 1883
Granted:	Nov. 27, 1883

Patent Pictures:

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Description:

Claim relates to drilled transverse hole to take a cutter whose shank is correspondingly rounded - to lessen cost of manufacture. Secondary advantage also claimed regarding the ability to adjust the angle at which the cutter addresses the wood.