US Patent: 171,109 - Improvement in rectangular-mortise cutters


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US Patent: 171,109

Improvement in rectangular-mortise cutters

Patentee:

John Doyle (exact or similar names) - Hoboken, NJ

USPTO Classifications:

144/80

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:

Gustavus George

William H. Devlin

Patent Dates:
Applied:	Aug. 07, 1875
Granted:	Dec. 14, 1875

Patent Pictures:

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Description:

A novel approach to a mortising machine. The two cutters rock as the disk E oscillates, creating a rectangular mortise that is elliptical in cross-section.