DESCRIPTION: The patented Delta Oscillys destemmer utilizes a pendulum swing or oscillating movement without any beater bars, shaft or rotating cage. The grapes are destemmed by inertia. The Delta Oscillys is an improvement over current destemmer technology in terms of efficiency and effectiveness. The Delta Oscillys destemmer provides the ability to maintain the integrity of grapes and stems at higher throughputs, avoiding both rupture and shear.