US Patent: 111,834 - Improvement in mortising-machines


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US Patent: 111,834

Improvement in mortising-machines

Patentee:

Joseph W. Fowle (exact or similar names) - Boston, MA

USPTO Classifications:

144/104, 144/79, 408/30

Tool Categories:

woodworking machines : joint making machines : portable timber mortisers

woodworking machines : wood drilling and boring : portable timber mortisers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

C. Warren Brown

J. B. Crosby

Patent Dates:
Granted:	Feb. 14, 1871

Patent Pictures:

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Description:

This timber borer uses an auger surrounded by four separate corner chisels. The most interesting thing about it is that the inventor is now recognized as an important early innovator in percussion rock drills; see patent 7,972.