A garbage disposal unit or waste disposal unit is a device, usually electrically powered, installed under a kitchen sink between the sink's drain and the trap which shreds food waste into pieces small enough generally less than 2 mm (0.079_in) to pass through plumbing. Garbage disposal units are widely used in North American households, but far less commonly used elsewhere. In Canada, they are commonly called garburators. The garbage disposal was invented in 1927 by John W. Hammes, an architect working in Racine, Wisconsin. After eleven years of development, his InSinkErator company put his disposer on the market in 1940. Hammes' claim is disputed, as General Electric introduced a garbage disposal unit in 1935. In many cities in the United States in the 1930s and the 1940s the municipal sewage system had regulations prohibiting running food waste (garbage) into the system.
Contributions by Pol098, Flammingo, and Mauls.