@ Hubert Booth was one of those happy inventors who had a brilliantly simple idea which proved brilliantly successful. His introduction of the vacuum cleaner meant that carpets never had to be taken outside and beaten again, and also assured him of at least a small place in history # Booth trained as a civil engineer in Glasgow and worked on many major bridge projects in Britain and abroad. He also designed funfair Big Wheels for Paris, Vienna, London and Blackpool # A hand-cranked vacuum cleaner was used on the carpet in West- minster Abbey before the coron- ation of Edward VII in 1902. By the time that Queen Elizabeth's was crowned vacuum cleaners (1951 model, right) were considerably smaller, and powered by electricity # The first vacuum cleaners were large industrial models, operated from the street with only the suction tube passed into the house. But by the Forties there were small hand- held models for cleaning stairs and other nooks and crannies # The vacuum cleaner did not make Booth's name. It was William Hoover, an entrepreneur rather than an inventor, who popularized the device: it is thanks to him that in Britain people "hoover" carpets to get them clean, never "booth" them # In 1951 the humble vacuum cleaner was put to work as a novel musical instrument by George Weldon, conductor of the Halle Orchestra. Many cleaners and their owners turned up for the auditions # Advertisers went to extraordinary lengths to prove the power of their vacuum cleaners. This Sixties model had enough suction to lift a weight equivalent to that of a large man @