Презентация, доклад по теме “Fascination and Challenge: The World of Science and Technology”: пылесосы

г. Владимир
2013

vacuum cleaners were first invented they did not resemble the vacuum cleaners of today. 

1868 by Ives W. McGaffey

The machine was difficult to use, because it was operated by a hand crank while being moved across the floor.

Booth in 1901. It was simply a box on wheels, and worked on gasoline. This vacuum cleaner roared very loudly. These first vacuum cleaners were large and heavy and were usually transported from house to house by horse


Long bendable hoses were put through the doors and windows of a house and dust was sucked into the gas powered unit outside.

Booth was the first to use the term “vacuum cleaner.”

The Puffing Billy

residential use. He invented the first motorized, portable vacuum cleaner.

This invention was accepted with pleasure by practical Americans.

first vacuum cleaner from James Spangler and the Hoover Vacuum Cleaner Company that we know today was born. 

in 1921 that was designed to lie on the floor on two thin metal runners. This innovation, conceived by Electrolux founder Axel Wenner-Gren, became a standard feature on generations of future vacuum cleaners. There is a recorded example of a 1930s Electrolux vacuum cleaner surviving in use for over 70 years, finally breaking in 2008.

a small household appliance. Now modern vacuum cleaners are virtually silent and are capable of much.