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US Patent: 78,863
Grinding Harvester Knives
M. C. Cronk - Auburn, NY

USPTO Classifications:

Tool Categories:
metalworking machines : grinders : tool grinders

M. C. Cronk - Auburn, NY
W. Boyton - Auburn, NY

Not known to have been produced

Horace T. Cook
John Bird
Charles Alexander
J. W. Master

Patent Dates:
Granted: Jun. 16, 1868

Patent Pictures:
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J. H. Alexander - patent attorney

In operating my machine, the knife will be held in the proper position by pressing on the end of plate M, and the necessary pressure given to the knife by operating lever G with thumb-screw in. When there is a wobbling motion in the stone, the knife will partake of that motion by the action of the pulley on lever G, and the action of lever G on the cutter-bar and knives. By means' of this arrangement, the knife undergoing the process of grinding will always, when the stone wobbles, bear the same relative position to the surface of the stone, thus avoiding the possibility of blunting the edge of one knife while sharpening the one next to it.

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