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US Patent: 98,028
Grinding Machine
Patentees:
George T. Chattaway - Brooklyn, NY
E. D. Dickinson - New York, NY
John Dickinson - New York, NY

USPTO Classifications:
451/406

Tool Categories:
metalworking machines : grinders : sharpening machines

Assignees:
George T. Chattaway - Brooklyn, NY

Manufacturer:
Not known to have been produced

Witnesses:
Charles H. Smith
Harold Serrell

Patent Dates:
Granted: Dec. 21, 1869

Patent Pictures:
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Description:
Our invention is made with special reference to the grinding of scissors with uniformity in the angle of the cutting-edge, and that by a portable apparatus, adapted to use upon a sewing-machine, at the place "Where the bobbin-winder is usually applied, so as .to' be driven by the belt 'that leads to the main shaft and fly-wheel.

We employ a swinging rest, upon which the scissors blade is to lie, so as to adjust the angle at which the cutting-hedge is to be ground,, by moving the .said rest by means of screws, and this rest is upon a movable bed, and combined with a revolving grinding-wheel.

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