Vacuum cleaner
The vacuum cleaner evolved from the carpet sweeper via manual vacuum cleaners. The first manual models, using bellows, were developed in the 1860s, and the first motorized designs appeared at the turn of the 20th century, with the first decade being the boom decade.
James M. Spangler
James Murray Spangler (November 20, 1848 – January 22, 1915) was an American inventor, salesman and janitor who invented the first commercially successful portable electric vacuum cleaner that revolutionized household carpet cleaning. His device was not the first vacuum cleaner. However, Spangler's device was the first that was practical for home use. It was the first to use both a cloth filter bag and cleaning attachments. Spangler improved this basic model and received a patent for it in 1908. He formed the Electric Suction Sweeper Company to manufacture his device. William H. Hoover was so impressed with the vacuum cleaner that he bought into Spangler's business and patents.