Otto Frederick Rohwedder (July 28, 1880 – November 8, 1960) was an American inventor and engineer who created the first automatic bread-slicing machine for commercial use.

With the need to get funding again, Rohwedder was delayed for several years in bringing the bread slicer to market.

Sales of the machine to other bakeries increased and sliced bread became available across the country.

Gustav Papendick, a baker in St. Louis, bought Rohwedder's second machine and found he could improve on it.

By 1932 the availability of standardized slices had boosted sales of automatic, pop-up toasters, an invention of 1926 by Charles Strite.

[4] That same year Rohwedder sold his patent rights to the Micro-Westco Co. of Bettendorf, Iowa, and joined the company.