Abstract: A windshield wiper system that includes a feature which will eliminate the build-up of snow and ice on windshield wiper blades. This feature is an operator initiated activation of a mechanism that produces a slapping action of the wiper blades against the windshield causing the snow and ice build-up to dislodge and fall away. The slapping device is activated by the operator pushing a tab or push button. The slapping motion is accomplished by pivoting the oscillating wiper arm shaft mount, while in the vertical position, by a linkage connected to the wiper arm shaft mount. A solenoid pulsed from a pulse generator moves the linkage which in turn lifts the blade and slaps it back against the windshield.