US Patent: 410,863 - Bung Borer


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 410,863

Bung Borer

Patentee:

James Swan (exact or similar names) - Seymour, CT

USPTO Classifications:

408/208

Tool Categories:

woodworking tools : hand drills : drill bits : tapered reamers

Assignees:

None

Manufacturer:

James Swan Co. - Seymour, CT

Witnesses:

A. M. Wooster

C. M. Newman

Patent Dates:
Applied:	Jan. 02, 1889
Granted:	Sep. 10, 1889

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin (dm)

Description:

The aim of this bung borer is for the cutter which bores through to produce an unbroken shaving/chip which will remain inside the bit. The shavings from the reaming cutter are to, then, be retained atop the boring chips. The small area of diminished diameter near the tip is to avoid any friction of the bit ahead of the reaming cutter.