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US Patent: 569,597
Boring Machine
Joist Drill
Patentee:
Elliot E. Anthony - Detroit, MI

USPTO Classifications:
408/114

Tool Categories:
woodworking tools : hand drills : corner drills

Assignees:
None

Manufacturer:
Unknown

Witnesses:
M. B. O'Dogherty
O. F. Barthel

Patent Dates:
Applied: Feb. 03, 1896
Granted: Oct. 20, 1896

Patent Pictures: [ 1 | 2 ]
Image courtesy and (C) Frank Kosmerl, eBay handle tool-frank
USPTO pdf tiff
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Description:
Designed for boring holes through joists in ceilings, floors, and walls. A handled feed bar is placed across the joist and a split sliding clamp is used to adjust the drilling height for the right angle drill.

Known example is marked only with the patent date. The feed bar is 22" long with a chuck accepting a standard braces four sided tapered tang bits.

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