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InSinkErator is a company and brand name known for producing instant hot water dispensers and waste disposal systems, generally called garbage disposals or garbage disposers. The company was founded in Racine, Wisconsin by John W. Hammes, who was working as an architect there. Hammes is credited with inventing the "in-sink" food waste disposal in 1927, for his wife. It works by grinding and shredding solid food waste. He spent ten years improving the design and went into business selling the appliance. His company was called the In-Sink-Erator Manufacturing Company. The name is a play on the word "incinerator" and refers to the fact that the mouth of the disposal unit is located "in" the "sink".
The company was acquired in 1968 and is now a division of Emerson Appliance Solutions, part of Emerson (NYSE: EMR), a global technology and engineering company which serves industrial, commercial, and consumer markets.
In 2006 In-Sink-Erator changed their name to InSinkErator, and redesigned the company logo. They also released a re-engineered line of high technology disposers branded as the Evolution Series.
InSinkErator is headquartered in Racine, Wisconsin.