Calendar: July 7

A Year: Day to Day Men: 7th of July

Casual Attitude

July 7, 1880 was the birthdate of the American inventor Otto Frederick Rohwedder.

Otto Rohwedder was born in Davenport, Iowa, the son of Claus and Elizabeth Rohwedder, of ethnic German descent. He attended the public schools in Davenport, eventually becoming an apprentice fo a jeweler to learn a trade. He continued his studies, graduating with a degree in optics from the Northern Illinois College of Ophthalmology and Otology in Chicago.

Otto Rohwedder became successful in his career as a jeweler, expanding his business to three locations in Saint Joseph, Missouri, where he had settled with his wife and two children. He used his experience with watches to invent new machines in his spare time. Convinced that he could develop a machine that would slice bread, Rohwedder sold his jewelry stores to fund his efforts. In 1917 a fire broke out in his factory, destroying his prototype and his blueprints. Forced to find new funding for his project, it took several more years before he could bring his machine to market.

In 1927 Otto Rohwedder successfully designed a machine that not only sliced the bread but wrapped it afterwards. He applied for patents and sold the first machine to Frank Bench of the Chillicothe Baking Company in Chillicothe, Missouri, in 1928. The first loaf of automatically sliced bread sold commercially on July 7, 1928, on Rhowedder’s forty-eighth birthday. Sales of the machine to other bakeries increased and sliced bread became available across the country.

In 1930 the Continental Baking Company of New York City introduced their “Wonder Bread” as a sliced bread. Other major companies saw the success of the marketing and followed with their own sliced products. The availability of standardized slices boosted the sales of the 1926 invention, the automatic pop-up toaster. For the first time, American bakeries in the year 1933 sold more sliced than unsliced bread loaves.

Otto Rohwedder was granted seven patents for his bread slicing and handling machines between the years 1927 to 1936. In 1933, he sold his patent rights to the Micro-Westco Company of Bettendorf, Iowa, and joined the company. He became vice-president and sales manager of the Rohwedder Bakery Machine division. His original bread-slicing machine is in the Smithsonian Institution in Washington, DC.

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