who invented the washing machine
The first washing machine was designed by H. Sidgier of Great Britain in 1782. The first patented washer in the United States was by Nathaniel C Briggs in 1797. It was a manual device. (The US Patent Office was destroyed by fire in 1836, so there are no details or drawings.) The first electric washing machine was invented in 1906 by Alva J. Fisher.
Alva J. Fisher has been incorrectly credited with the invention of the electric washer. The US Patent Office shows at least one patent issued before Fisher's US patent number 966677 (e.g. Woodrow's US patent number 921195). The inventor of the electric washing machine remains unknown.