Abstract: A flow-intensifier for use in an upright automatic clothes washing machine includes a weight disposed intermediate the washer agitator and the washer drum, non-extendible elongate connectors operatively connected at one end to the agitator for movement therewith and at the other end to the weight for movement therewith, and a redirecting guide traversed by the connector and operatively connected to the drum for movement therewith so that reciprocal relative rotation of the agitator and the drum causes a corresponding reciprocal vertical movement of the weight.