The zipper does not have one clean, simple inventor story. It is one of those everyday objects that took several tries before it became reliable. If you ask who first had the idea, one name matters. If you ask who made the first practical zipper-like product, another name matters. If you ask who made the modern zipper work, a third name matters.

The earliest important step came from Elias Howe, the American inventor better known for the sewing machine. In 1851, Howe patented an “Automatic Continuous Clothing Closure.” Smithsonian Libraries describes this as one of the zipper’s humble beginnings. But Howe did not turn that idea into a successful product, so it stayed more like an early ancestor than the zipper people use today.

The next big figure was Whitcomb L. Judson of Chicago. In 1893, Judson patented and showed a device called the “clasp locker” at the World’s Columbian Exposition in Chicago. It was meant to replace long boot laces. Lemelson-MIT says Judson’s prototype worked, but it was clumsy and often jammed. The public largely ignored it.

Then came Gideon Sundback, a Swedish-American engineer working for the company connected to Judson’s fastener. Sundback improved the design by making the fastening elements work more like the interlocking teeth of a modern zipper. Britannica Kids says his Hookless No. 2, introduced in the 1910s, is now considered the first modern zipper.

So the fairest answer is this: Whitcomb Judson is often credited with inventing the zipper-like clasp locker, while Gideon Sundback is usually credited with perfecting the modern zipper. Elias Howe belongs at the start of the story, but his version did not become the everyday fastener.

The name “zipper” came later. The fastener was first called things like clasp locker, slide fastener, or hookless fastener. In 1923, B.F. Goodrich used Sundback-style fasteners on rubber boots and called the boot model “Zipper.” The name sounded like the quick zip of the fastener, and it stuck.

The zipper also needed a use case before people cared. JSTOR Daily notes that money belts with hookless fasteners became popular with U.S. sailors during World War I, and the Navy later ordered fasteners for flying suits. Fashion took longer to catch up. Buttons and clasps were still more popular at the time, so the zipper had to prove itself.

That is why the invention feels slower than the object looks. A zipper closes in one quick pull, but the idea took decades to become smooth, reliable, and widely accepted. Howe started the trail, Judson built a working path, and Sundback paved the road people actually used.

References

1. The Up and Down History of the Zipper – Smithsonian Libraries and Archives
2. zipper – Britannica Kids
3. Whitcomb Judson – Lemelson-MIT
4. How WWI Made the Zipper a Success – JSTOR Daily
5. How Gideon Sundback Perfected the Zipper – National Inventors Hall of Fame

Explore More

• Why did the zipper take so long to become popular?
• How does a zipper actually lock its teeth together?
• Why do some zippers jam so easily?
• Who invented Velcro?
• Why are YKK letters found on so many zippers?