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US Patent: 505,712
Combined Bit and Saw
Patentee:
Eric O. Lofdahl - Rockford, IL

USPTO Classifications:
408/22

Tool Categories:
woodworking tools : hand drills : drill bits : auger bits
specialty tools : special purpose saws

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. R. Evans
A. O. Behel

Patent Dates:
Applied: Dec. 29, 1892
Granted: Sep. 26, 1893

Patent Pictures:
Eric O. Lofdahl patent September 26, 1893
USPTO pdf tiff
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Description:
The tool was intended to be a key hole cutter combining a wood bit of appropriate diameter, and a reduced size square shank having saw teeth on one side.

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