Washing Machine as an invention of manking

Washing machine inventor
Primitive washing machines were a wooden box with a movable frame. The first washing machine launched into mass production was created in 1907 [source not specified 197 days] William Blackstone, she had a manual drive, there is also an opinion that Nathaniel Briggs made the first one

what is the washing machine designed for?
Washing machines are designed for mechanization and automation of one of the most labor-intensive manual labor operations in the household - laundry. The essence of the washing process is the physico-chemical and mechanical action of a detergent solution on the laundry, which consists of two components: water and detergent (detergent)