Otto Frederick roadman was an American inventor and engineer who created the first automatic bread-slicing machine for commercial use. It was first used by the Chillicothe Missouri Baking Company.
Otto Frederick Rohwedder
Rohwedder's grave at Riverside Cemetery
Sliced bread is a loaf of bread that has been sliced with a machine and packaged for convenience, as opposed to the consumer cutting it with a knife. It was first sold in 1928, advertised as "the greatest forward step in the baking industry since bread was wrapped". By 1933, around 80% of bread sold in the US was pre-sliced, leading to the popular idiom "greatest thing since sliced bread".
A loaf of brown bread sliced to uniform thickness by a bread slicing machine
Chillicothe Baking Company's building in Chillicothe, Missouri, where bread was first machine-sliced for sale
The multiple cutting bands in Rohwedder's 1928 slicer are shown in this diagram from his patent.