When a knife is placed against the face of one of the conical discs, the knife will lie at the correct angle to the grinding wheel for sharpening. If the edge of a shear blade is to be sharpened against the circumference of the grinding wheel, a shield (32) is pulled over the wheel...
The motor bearing the latter, in particular, is mounted on a slide and is driven in translation, in turn, by a gearmotor the operation of which is interlocked with a sensor while spring- contrasted plates supporting the knife itself during the sharpening operation press on the abovementioned ...