04/07/2026
In 1883, Josephine Garis Cochran's husband died and left her with $1,535 in cash and a pile of debt.
She was 44 years old, living in Shelbyville, Illinois, a small town two hundred miles south of Chicago. She had no formal engineering education. She had been a socialite — a hostess who entertained guests using her heirloom 17th-century china, the china that kept getting chipped and cracked when servants washed it by hand.
She had been thinking about a better way.
"If nobody else is going to invent a mechanical dishwashing machine," she reportedly said, "I'll do it myself."
And then she went into the shed behind her house and started building one.
She measured every piece of china she owned — every plate, cup, and saucer — and built wire compartments custom-fitted to each shape. She placed them inside a wheel that lay flat in a copper boiler. A motor turned the wheel while hot soapy water shot up from the bottom and rained back down on the dishes. No scrubbers. No hand cranking. Water pressure. Clean dishes.
She hired a young mechanic named George Butters to help her build the prototype. She filed her patent application on the last day of 1885. On December 28, 1886, she received her patent. Wikipedia
Then she tried to sell it.
Hotels and restaurants immediately saw the value — a machine that could wash 240 dishes in two minutes was exactly what a busy kitchen needed. Her first sale was to the Palmer House, one of Chicago's most prestigious hotels. The Sherman House followed. Orders came in.
But when she tried to attract investors to grow the company, she encountered a wall she hadn't anticipated. Many potential investors asked Cochran to resign so the company could be sold to a man. She refused and continued to fund the business herself. IEEE Spectrum
She kept going.
In 1893, Chicago hosted the World's Columbian Exposition — the greatest world's fair in American history, attended by over 27 million people. In Machinery Hall, alongside the cotton gin, the phonograph, and the telegraph, Josephine Cochran displayed her dishwashing machine. It was the only invention in the entire hall created by a woman.
The exposition's judges awarded it the highest prize for "best mechanical construction, durability, and adaptation to its line of work." USPTO
She went on to exhibit at fairs in Massachusetts, New York, and Missouri. She oversaw installations personally. She continuously improved her design. She eventually received six American patents and two British patents — including a second patent granted posthumously in 1917.
But the household market remained out of reach. Most homes didn't have hot water heaters large enough to supply the machine. The price — between $75 and $150 — was prohibitive for ordinary families. "When it comes to buying something for the kitchen that costs $75 or $100," Popular Science she said in a later interview, "a woman begins at once to figure out all the other things she could do with the money."
She understood the problem. She just couldn't solve it in her lifetime.
Josephine Cochran died in 1913 — of what some say was simple exhaustion from the unrelenting work of decades. Before she died, she said: "If I knew all I know today when I began to put the dishwasher on the market, I never would have had the courage to start. But then, I would have missed a very wonderful experience."
In 1926, her company was acquired by the Hobart Manufacturing Company. In 1949, the first KitchenAid dishwasher — based directly on her design — was introduced to American homes. By the 1960s, dishwashers were finally becoming standard household appliances.
She had been right about everything. The world just took fifty years to agree with her.
In 2006, Josephine Garis Cochran was inducted into the National Inventors Hall of Fame. The dishwasher you use today still runs on the same basic principle she worked out alone in a shed in Shelbyville, Illinois, in 1885: water pressure, custom-fitted racks, and the quiet, revolutionary refusal to accept that the work was impossible.
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