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US Patent: 147,921
Improvement in Tool-Grinding Machines
Patentee:
John P. Fay - Worcester, MA

USPTO Classifications:
451/365, 451/367

Tool Categories:
metalworking machines : grinders : sharpening machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph A. Howland
Otis Warren

Patent Dates:
Applied: Jan. 05, 1874
Granted: Feb. 24, 1874

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
Machine for grinding tools for "turning, boring [twist drills], planing, and similar work."

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