US Patent: 662,199 - Expansible Bit


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US Patent: 662,199

Expansible Bit

Patentee:

Joseph Peter Lavigne (exact or similar names) - New Haven, CT

USPTO Classifications:

408/194, 408/195, 408/213

Tool Categories:

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

Assignees:

John J. Tower - New York, NY

Manufacturer:

Not known to have been produced

Witnesses:

Lillian D. Kelsey

George D. Seymour

Patent Dates:
Applied:	Apr. 02, 1900
Granted:	Nov. 20, 1900

Patent Pictures:

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Description:

The primary claim has to do with the spring-tensioned clamping plate, designed to allow the plate to maintain some pressure on the adjustable cutter after the set screw is loosened to allow for adjustment.