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US Patent: 845,360
Recess-boring tool
Michael Jungling - Kingwood, GA

USPTO Classifications:
408/26, 82/1.5

Tool Categories:
woodworking machines : wood drilling and boring : wood drill bits


Not known to have been produced

D. F. Arthur
W. W. Ashburn

Patent Dates:
Applied: Jul. 23, 1904
Granted: Feb. 26, 1907

Patent Pictures:
USPTO pdf tiff
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Recess-boring tool "which will in one operation bore a recess having a portion of its (depth) cylindrical in contour and the remaining portion tapering or conical in contour. The invention aims to provide a recess-boring tool which can be used in a machine or with a carpenter's ordinary brace..." The flared recess was intended for wedged tenon joints.

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