City Cast Philly logo

How Philadelphia Invented The Slinky

Posted on August 29, 2023   |   Updated on September 30, 2025
Brittany Valentine

Brittany Valentine

pink background with a neon, multi-colored slinky

The Slinky is a great example of how some of the best things are created accidentally! (MirageC/Getty Images)

The Slinky is one of the most popular American toys. Here’s the story of how Philly manifested this cultural phenomenon.

In 1943, mechanical engineer Richard James was working at a shipyard in Kensington, testing tensions springs that would stabilize sensitive instruments on ships.

One day, James accidentally knocked a box of spare parts off his desk, and watched in amusement as a loose spring “walked” down a series of books, a tabletop, and finally to the floor. Inspired, James spent the next two years perfecting the design.

In 1945, Gimbels Department Store let James demonstrate the Slinky’s moves for customers, and it quickly became a hit. Priced at just $1, he sold all 400 of them within an hour and a half.

James invented the slinky, but it was his wife Betty, who named it, developed the well-known advertising jingle, and ultimately made the company a success.

In 1960, the Slinky company was struggling with debt, and James left his family to join an evangelical group in Bolivia, leaving Betty with a company on the verge of bankruptcy.

Betty didn’t give up. She took out a mortgage on her house and attended a New York toy show in 1963. Once again, orders began rushing in. To date, more than 300 million Slinkies have been sold.

Share article

Hey Philly

Stay connected to City Cast Philly and get ready to join the local conversation.

Can't subscribe? Turn off your ad blocker and try again.
Advertisement image

The latest in Philly

Sponsored

Moving to Philadelphia? What to Check Before You Pick a Neighborhood, Book a Truck, and Sign a Lease

With this guide, you can move to Philadelphia, move from another place to Philadelphia, or just see if living in Philadelphia fits your d...

Wellknown Moving Company Logo
Keep It LocalAugust 6

The Only Thing Better Than Coffee? Coffee With Plants

Here are our favorite Philly spots where you can get your caffeine fix and your plant fix in one trip.

A display of plants in ceramic pots inside Artesano Cafe in Manayunk.
Keep It LocalAugust 6

This Plant and Coffee Shop Serves One of Philly's Most Unexpected Menus

Inside both locations of The Ground, you’ll find a variety of tropical houseplants with diverse light options.

Six open-faced toasts from The Ground Rittenhouse served on white plates, which sit on a green table surrounded by plants.
Philly, ExplainedJuly 31

Prove Your Weekly Philly Knowledge

Pop quiz, Philly! It’s that time again to test your knowledge on local trivia.

Facing a large crowd of fans, The Phillie Phanatic mascot holds a sign that says "Welcome LeBron."
Philly's BestJuly 31

How To Spend August 2026 in Philly

The semiquincentennial may officially be behind us, but Philly’s keeping the party atmosphere going through the rest of this summer.

Eight plates of sandwiches with seeded buns of different varieties placed in a circle on a table.
Food & DrinkJuly 30

Your Guide to New Restaurants, Bars & Cafés in Philly

Philly’s local culinary scene is constantly growing and changing. Here’s a recap of some of the restaurants, bars, cafés, and other delic...

Six pastries are laid out on a metal tray with wax paper, a person wearing all black holds the tray with their left hand
Keep It LocalJuly 30

2nd Street Festival Celebrates 16 Years on Aug. 2

Over 40,000 people are expected to experience the three-quarter-mile stretch of Second Street packed with local food trucks, artists, str...

A view of the 2nd Street Festival in Northern Liberties, with hundreds of people in the streets and vendors stationed under white tents along the sides of Second Street.
Keep It LocalJuly 30

Our Favorite Places to Shop in NoLibs

We have a guide to the Northern Liberties shops that deserve a spot on your festival itinerary.

Shelves inside Ray’s Reusables display sustainable products, including empty mason jars, natural scrubbing brushes, bees wrap, stasher reusable bags, chopsticks, metal straws, and laundry bags.