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US Patent: 439,154
Cutter Grinder
Frederick Holz - Cincinnati, OH

USPTO Classifications:
451/213, 451/340, 451/374, 451/392

Tool Categories:
metalworking machines : milling machines

Cincinnati Milling Machine Co. - Cincinnati, OH

Not known to have been produced

Charles M. Peck
Charles Billon
W. C. Jirdinston

Patent Dates:
Applied: Nov. 02, 1889
Granted: Oct. 28, 1890

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Cincinnati Milling Machine Co.
Peck & Rector - patent attorneys

My invention relates to a universal cutter and reamer grinder for grinding milling cutters and reamers of all shapes, such as face mills, angular cutters, end mills, spiral mills, slitting-saws, and taper and straight reamers. It has for its object the improved construction and mode of operation of such grinders, whereby they are rendered universal, simple in construction and operation, and by which I am enabled to grind a straight-line clearance with smaller grinders than usual for this work, and in such a manner as to not heat the cutters to an injurious extent.

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