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US Patent: 29,883
Auger
Adjustable Auger
Patentee:
John M. Hathaway - New York, NY

USPTO Classifications:
408/212, 408/233

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. F. Case
W. G. Nutting

Patent Dates:
Granted: Sep. 04, 1860

Patent Pictures:
USPTO pdf tiff
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Description:
Adjustable auger by means of transverse cutter set in a dovetail groove. Additional specifications refer to pin and spring arrangement, as well as a set screw and 1/32" graduations to expedite setting the diameter of cuts at 1/16" increments.

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