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US Patent: 79,012
Improvement in Augers
Patentee:
Nathaniel C. Sanford (exact or similar names) - Meriden, CT

USPTO Classifications:
408/214, 408/230

Tool Categories:
woodworking tools : hand drills : drill bits : auger bits

Assignees:
None

Manufacturer:
Nathaniel C. Sanford & Co. - Meriden, CT

Witnesses:
John Ives
Andrew G. Lowerie

Patent Dates:
Granted: Jun. 16, 1868

Patent Pictures: [ 1 | 2 ]
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Description:
"This invention consists in forming an auger with two or more cutting-lips, commencing from the first or usual cutting-lip, and passing around the last turn or twist of the helical part of the auger, and each successive lip being at a greater distance from the axial centre of the auger than the preceding, and in a different horizontal plane, whereby the paths of the several lips are different and distinct, and the auger may be operated more easily."

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