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The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.
A partial vacuum may be generated by increasing the volume of a container. To continue evacuating a chamber indefinitely without requiring infinite growth, a compartment of the vacuum can be repeatedly closed off, exhausted, and expanded again. This is the principle behind a positive displacement pump, for example the manual water pump. Inside ...
Related to the wet vacuum is the extraction vacuum cleaner used mainly in hot water extraction, a method of cleaning hard-to-move pieces of fabric like carpets. These machines are able to spray hot soapy water and then suck it back out of the fabric, removing dirt in the process.
As an incentive to new customers, Kirby offers the Service Center Vacuum Rebuild Program for original owners who have been registered with the company. As long as the customer owns the machine as the registered owner, if the cleaner needs repair, they can send it back to the Rebuild Department and have it restored to "like-new" condition.
A pump of this type is capable of producing high vacuum in which the pressure is 1 mPa. [1] The Sprengel pump is a vacuum pump that uses drops of mercury falling through a small-bore capillary tube to trap air from the system to be evacuated. [Note 1] It was invented by Hanover-born chemist Hermann Sprengel in 1865 while he was working in ...
David T. Kenney (April 3, 1866 – May 26?, 1922) was an inventor with nine patents, granted between 1903 and 1913, applicable to both machine-driven and manual vacuum cleaners, dominated the vacuum cleaner industry in the United States until the 1920s.