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US Patent: 425,781
Knife-grinding machine
Patentee:
William D. Graves, Jr. - Presque Isle, ME

USPTO Classifications:
451/369, 451/377, 451/393, 74/425.5

Tool Categories:
metalworking machines : grinders : sharpening machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
M. E. Wheeler
A. H. Jenks

Patent Dates:
Applied: Feb. 01, 1890
Granted: Apr. 15, 1890

Patent Pictures:
USPTO pdf tiff
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Description:
"My invention relates to improvements in knife-grinding machines, and has for its object to provide a simple, compact, automatically-acting device, whereby straight-edged knives for various machines may be ground to a bevel edge rapidly and accurately."

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