PURPOSE: To wash the washed article such as futon mat in which cotton trash is contained, by allowing a washing machine to be provided with a washing system in which a washing and spin-drying tank is fixed and rotary blades are reversely revolved and a washing system in which the washing and spin- drying tank and rotary blades are formed integrally and revolved in one direction intermittently.

CONSTITUTION: When a futon mat, etc., are washed, a solenoid 123 is put into electric conduction, and a plunger is attracted, and the engagement of an operating band 137 is released, and a spring collar 130 is set into a free state. At this time, the second pulley 17b is revolved intermittently in the R direction, and then a clutch spring 128 is tightened, and revolution is transmitted to a motor shaft 125 and a washing tank shaft 103 through a pulley boss 138 and a boss 124, and the washing and spin-drying water tank and rotary blades are intermittently revolved. Accordingly, washed articles move intermittently in the water in the outer tank, together with the washing and dehydration tank and the rotary blades, and water or the water containing a detergent, etc., passes through the inside of the washed articles, and the washed articles can be washed without being damaged.