John W. Hammes

Who Invented the First Garbage Disposal?

Image: https://insinkerator.emerson.com/ / John W. Hammes A garbage disposal unit (also known as a waste disposal unit, garbage disposer, garburator, etc.) is a device, usually electrically powered, installed under a kitchen sink between the sink’s drain and the trap. The disposal unit shreds food waste into pieces small enough—generally less than 2 mm (0.079 in) in diameter—to pass through plumbing. …

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Lewis P Haslett

Who Invented the First Air Filters?

Image: alcetron.com/Lewis P. Haslett Patented by Lewis P Haslett in 1849. Lewis Phectic Haslett was an American inventor and the first person to receive a patent for an early form of the gas mask in 1849. Air purifiers today have been developed from an early gas mask to suit the needs of factory workers to self-standing systems for cleaning the air, as …

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