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US Patent: 393,880
Gage-Chisel for Cutting Hinge-Recesses
Aaron Thomas Binkerd - Allegheny, PA

USPTO Classifications:
30/167.1, 30/167.2, 30/293

Tool Categories:
woodworking tools : chisels : firmer chisels
layout tools : marking gauges : butt gauges

Duncan C. White - Pittsburgh, PA

Not known to have been produced

Frank Liggett
Arthur Wessel
John M. Deemer
C. Sedgewick

Patent Dates:
Applied: Mar. 16, 1888
Granted: Dec. 04, 1888

Patent Pictures:
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This is an unusual combination of chisel and butt gage that allows the carpenter to mark and cut the edges of the hinge mortise in one operation.

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