US Patent: X2,642 - Single twist screw auger


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US Patent: 2,642X

Single twist screw auger

Patentee:

Ezra L'Hommedieu (exact or similar names) - Norwich, CT

USPTO Classifications:

408/210, 408/214, 408/230

Tool Categories:

woodworking tools : hand drills : drill bits : auger bits

Assignees:

None

Manufacturer:

Ezra L'Hommedieu - Norwich, CT

Witnesses:

Eli Warner

Robert C. Peters

Patent Dates:
Granted:	Jul. 17, 1816

Patent Pictures:

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Description:

L'Hommedieu claims that the cavity of this single-twist auger, being larger than for double-twist augers, allows chips to rise freely regardless of the depth of the bore - subject to the length of the twist. He also claims that this bit will work equally well with or without the lead screw.