By David Manney Otto Rohwedder gave America something so ordinary now that we barely notice it unless the loaf gets smashed on the ride home. On July 7, 1928, his commercial bread-slicing machine began cutting bakery loaves into neat, even slices. The first machine was used at Bench's Bakery in Chillicothe, Mo., and suddenly breakfast had one less small battle built into it. Before that, bread was hardly a novelty. People had baked, sold, carried, torn, cut, toasted, and blessed bread for centuries. But buying a loaf already sliced was different; it saved time, made sandwiches easier, and gave mothers one less knife job during the morning rush. It also helped turn store-bought bread into a reliable household habit instead of a second-best choice behind the home-baked loaf. From Time : While an advertisement touted it as “the greatest forward step in the baking industry since bread was wrapped,” customers were wary. According to the author of Why Do Donuts Have Holes? Fascinat...