190 1 year, British civil engineer Booth went to the Imperial Concert Hall in Leicester Square, London, and visited a demonstration of an American trunk dust collector. This vacuum cleaner blows dust into the container with compressed air. Booth thinks this method is not smart because a lot of dust can't be blown into the container. Later, he did the opposite and used vacuum method. Booth did a very simple experiment: cover your nose and mouth with a handkerchief and inhale through your mouth. As a result, a layer of dust was attached to the handkerchief. So, he made a vacuum cleaner, sucked the air into the hose with a powerful electric pump, and filtered the dust through the bag.
1901August, booth obtained a patent and established a vacuum cleaner company, but did not sell vacuum cleaners. He put the vacuum pump driven by gasoline engine on the carriage, served door to door, put three or four long hoses into the room from the window to vacuum, and all the employees in the company put on work clothes. This is the predecessor of the vacuum cleaner.
1902, Booth's service company was called to Westminster Abbey to clean the carpet for the coronation ceremony of Edward VII. Since then, business has been booming. 1906, booth made a small household vacuum cleaner. Although it is called "small", the vacuum cleaner weighs 88 pounds (1 pound =0.4536 kg), which is too big to be popularized.
1907 Spangler, an inventor in Ohio, made a portable vacuum cleaner. At that time, he worked as an administrator in a shop. In order to reduce the burden of sweeping carpets, he made a vacuum cleaner, used an electric fan to create a vacuum, sucked dust into the machine, and then blew it into his pocket. Unable to produce and sell, 1908 transferred the patent to Hoover, a fur manufacturer. Hoover began to manufacture the "O" vacuum cleaner with wheels and began to mass-produce this kind of vacuum cleaner. Hoover company was established for this purpose, and the sales volume was good. This earliest household vacuum cleaner has a reasonable design and has not changed much in principle since its development.
19 10 year, Denmark "Fisk &; Nelson (now Liqi Advanced) sold the first Liqi C 1 vacuum cleaner. The weight was about 17.5 kg, but it was very popular in the market at that time because it could be operated by a single person.
The earliest vacuum cleaner was designed vertically. 19 12 years, Winler Goering of Stockholm, Sweden invented the horizontal canister vacuum cleaner, and Electrolux Electrolux became the founder of the vacuum cleaner.