220 one end of the lever 220 proximal to the rod 194 is coupled with the rod 194 by engagement of the pin 224 and another end of the lever 220 distanced from the rod 194 has the rotatable tappet roller 210 being constantly indirect contact with the cam 170 by execution of the expanding coil spring 200 an elastic member e g torsion spring for springing back the lever 120 to the initial position is arranged at the shaft 222 of the lever 220 instead of the coil spring 200 which is mounted on the rod 194 of the piston assembly 190 in the drawing the pumping chamber 180 is horizontally arranged adjacent to the pulsator 160 but the pumping chamber 180 may be vertically positioned in that case periphery of the cam 170 is extended outward and upward to contact with the tappet roller 210 of the piston assembly 190 furthermore the opening 184 of the pumping chamber 180 can be extended near the water passage of the guide filter not shown the clothes washer having the rotational force conversion apparatus according to the present invention constructed as above is operated as below the clothes are put in the washing tub 106 and a washing mode is selected then water via the supply valve 101 is supplied to the shower ring 118 the water in the shower ring 118 drops into the washing tub 106 through the inner periphery of the shower ring 118 which generates a shower water stream the water in the washing tub 106 flows to the water basket 104 through a plurality of openings not shown and water is contained in the water basket 104 as.