Zipper Day
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Overview
Zipper Day, observed annually on April 29th, celebrates the ingenuity and widespread impact of the zipper, an invention that revolutionized fastening across countless industries. From clothing and accessories to luggage and industrial applications, the zipper provides a quick, secure, and efficient closure mechanism. This day commemorates its development and appreciation for how this ingenious device has become an indispensable part of modern daily life.
Origin and story
The earliest known patent for a 'Clasp Locker or Unlocker for Shoes' was granted to Whitcomb L. Judson in 1893, often considered the zipper's precursor.
The modern, reliable zipper design was significantly improved and patented as the 'Separable Fastener' by Swedish-American engineer Gideon Sundback in 1917.
Quick facts
- DateApril 29
- TypeKindness / Community
- Great forCommunity groups, Friends, Coworkers
Also on this date
Ways to celebrate
The zipper wasn't invented once — it took two inventors and roughly two decades to become the reliable fastener we use today.
Meet the two people behind it
Whitcomb Judson patented an early "clasp locker" for shoes in 1891, but it was unreliable and never caught on. He hired Swedish-born engineer Gideon Sundback to fix it — Sundback redesigned it with small interlocking teeth and a sliding pull, patenting the modern zipper design in 1913.
Learn how it got its name
The word "zipper" didn't exist until 1923, when industrialist B.F. Goodrich coined the onomatopoeic name for the fasteners on a new line of rubber boots. Read the fuller history of how the design evolved from Judson's shoe clasp to Sundback's practical version.
Trace its spread into everyday life
The U.S. Army used zippers on troops' clothing and gear during World War I, and by the late 1920s they'd spread into everyday clothing, footwear, and bags — pretty much everywhere you find them today.
Helpful resources: Gideon Sundback Invented the Modern Day Zipper (National Inventors Hall of Fame)
Fun facts
- The earliest known patent for a 'Clasp Locker or Unlocker for Shoes' was granted to Whitcomb L. Judson in 1893, often considered the zipper's precursor.
- The modern, reliable zipper design was significantly improved and patented as the 'Separable Fastener' by Swedish-American engineer Gideon Sundback in 1917.
- The term 'zipper' was coined in 1923 by BFGoodrich, who used Sundback's fastener on rubber boots and noted the distinctive 'zip' sound it made.
Sources and attribution
External links may lead to third-party websites.
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FAQ
- When is Zipper Day?
- It is observed on April 29 each year.
- What is Zipper Day?
- Zipper Day, observed annually on April 29th, celebrates the ingenuity and widespread impact of the zipper, an invention that revolutionized fastening across countless industries. From clothing and accessories to luggage and industrial applications, the zipper provides a quick, secure, and efficient closure mechanism. This day commemorates its development and appreciation for how this ingenious device has become an indispensable part of modern daily life.
- How do people celebrate Zipper Day?
- Read about Whitcomb Judson's unreliable 1891 shoe clasp and how engineer Gideon Sundback redesigned it into the modern interlocking-teeth zipper patented in 1913.
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