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US Patent: 130,488
Improvement in Reamers
Patentee:
Rhodolphus J. Croacher - Little Compton, RI

USPTO Classifications:
408/195, 408/208

Tool Categories:
woodworking tools : hand drills : drill bits : tapered reamers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry M. Tompkins
Anna B. Tompkins

Patent Dates:
Granted: Aug. 13, 1872

Patent Pictures:
USPTO pdf tiff
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Description:
The reamer is made of two half-cones, each having a cutting/reaming edge. Croacher shows two versions - a longer one without an auger tip, the shorter version accommodating one.

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