The fabric washing machine

This machine is used to wash out various impurities (dust,...) that have remained in the cloth. The washing machine consists of a closed trough. The cloth is first immersed in cold water, then washed with a mixture of warm water, soap, ammonia and soda. Finally, the cloth is washed with cold water. This process must be done very slowly, otherwise flakes will form. Sometimes an acid is added to the soap mixture to refresh the colour.