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US Patent: 14,454
Mortising-tool
Patentees:
C. H. Amidon - Greenfield, MA
A. C. Hitchcock - Greenfield, MA

USPTO Classifications:
408/207

Tool Categories:
woodworking tools : chisels : mortise chisels
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:
W. W. Clapp
James S. Greenwell

Patent Dates:
Granted: Mar. 18, 1856

Patent Pictures:
USPTO pdf tiff
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Description:
Chisel for hollow chisel mortising machines. The innovation was to use a bit similar to a metal-cutting bit, which would cut the waste into small pieces ("dust") as opposed to the larger chips created by the usual auger-type bit. This change supposedly reduced or eliminated clogging of the chisel.

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