Adolph Levitt invented the first commercially successful automated doughnut machine in the United States.
Levitt, an immigrant baker and inventor, developed the machine during the early twentieth century. It mechanized the repetitive work of cutting, shaping, frying, and handling doughnuts, allowing shops to produce them faster and more consistently.
The machine became especially famous after appearing at the 1934 Century of Progress exhibition in Chicago. Its public demonstration helped present doughnuts as a modern, efficiently produced food rather than only a bakery specialty.
Levitt’s invention is sometimes confused with the people who founded major doughnut chains. Vernon Rudolph founded Krispy Kreme, while William Rosenberg founded the business that became Dunkin’ Donuts; neither invented Levitt’s automated machine.