What’s the Hole in a Safety Pin For?

Yes, really. He even patented it — but then sold the patent rights for $400. Safe to say he may have second-guessed that one once the thing blew up.

What’s wild is that Hunt didn’t even think that this little hole in the coil would become a curious phenomenon more than 150 years later. But here we are.

The Best Kind of Everyday Engineering

To be honest, safety pins are an incredible functional design turn. They’re inexpensive, straightforward and somehow batshit useful. From fashion fixes and first aid to D.I.Y. projects and diaper duty (hello, vintage cloth diapers), they’ve weathered the

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