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US Patent: 514,178
Bit Adjustable Bit Attachment
Patentee: Abraham A. Bourgeons (exact or similar names) - East Longmeadow, MA USPTO Classifications: 408/212 Tool Categories: woodworking tools : hand drills : drill accessories woodworking tools : hand drills : drill bits : adjustable drill bits Assignees: None Manufacturer: Not known to have been produced Witnesses: William S. Bellows K. I. Clemons	Patent Dates: Applied: Sep. 07, 1893 Granted: Feb. 06, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)
Description: These attachments were to be provided in various sizes, allowing an ordinary auger bit to bore holes of differing diameters.

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