US Patent: 2,092,755 - Boring tool


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US Patent: 2,092,755

Boring tool

Patentee:

John P. Francesco (exact or similar names) - Haverhill, MA

USPTO Classifications:

408/173, 408/30, 74/567

Tool Categories:

woodworking machines : joint making machines : mortising machines

woodworking machines : wood drilling and boring : mortising machines

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Granted:	Sep. 14, 1937

Patent Pictures:

USPTO (New site tip)
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Description:

"Briefly stated the invention comprises a bit or drill provided with a cup-shaped sleeve and a cam mechanism for operating a radially movable cutter slidably attached to said drill. When the operator holds the sleeve stationary and revolves the drill the blade of the cutter describes a contour which outlines the side walls of the hole drilled, the contour depending on the size and shape of the cam used."

This patent number was seen on a display at Ripley's Believe It or Not Odditorium in Gatlinburg, TN. The correct patent for the machine displayed is 1,669,423.