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A blade sharpener features a blade supporting ramp pivotally adjustable relative to a motor driven abrasive belt for purposes of accommodating the sharpener for use with a wide range of blade widths and shapes. The sharpener incorporates a protractor scale, a ramp scale and a compensating scale adap

A blade sharpener features a blade supporting ramp pivotally adjustable relative to a motor driven abrasive belt for purposes of accommodating the sharpener for use with a wide range of blade widths and shapes. The sharpener incorporates a protractor scale, a ramp scale and a compensating scale adapted for use in measurement of the blade or edge angle of a blade to be sharpened and in setting of the ramp in a desired pivotally adjusted position required to effect proper sharpening of such blade.

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In a sharpening device for sharpening a blade having a cutting edge defined by cutting edge surfaces converging towards one another from adjacent opposite side surfaces of said blade, said cutting edge surfaces defining an edge angle and said side surfaces defining a blade angle, the improvement for

In a sharpening device for sharpening a blade having a cutting edge defined by cutting edge surfaces converging towards one another from adjacent opposite side surfaces of said blade, said cutting edge surfaces defining an edge angle and said side surfaces defining a blade angle, the improvement for sharpening said blade to provide a desired edge angle comprising in combination: means for driving abrasive means for movement along a path of travel; support means having a planar supporting surface for supporting said side surfaces by surface-to-surface to position said edge surfaces in engagement with said abrasive means, said support means being adjustable for varying an included angle defined by said supporting surface and said abrasive means to arrange said edge surfaces in engagement with said abrasive means for removing material therefrom as required to provide said desired edge angle; and included angle control means for cooperating with said supporting surface to measure said blade angle and provide edge angle indicia for adjusting said included angle as required to effect sharpening of said blade to provide said desired edge angle.