1910–1911
Britannica 11th
Encyclopaedia Britannica · 11th edition
VACUUM-CLEANER, an appliance for removing dust from carpets, curtains, &c., by suction, and consisting essentially of some form of air-pump drawing air through a nozzle which is passed over the material that has to be cleaned. The dust is carried away with the air-stream and is separated by filtration through screens of muslin or other suitable fabric, sometimes with the aid of a series of bafHe-plates which cause the heavier particles to fall to the bottom of the collecting receptacle by gravity. In the last decad…
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- Vol. 27, pp. 834-834