In 1937, Oklahoma grocer Sylvan Goldman introduced the first shopping cart after noticing customers bought only what they could carry; it changed supermarket shopping

Long before self-checkout lanes and loyalty apps were a thing, one Oklahoman grocer found a solution to a simple problem. Customers could carry only as much as their arms would hold. Sylvan Goldman ran a chain of Humpty Dumpty grocery stores in Oklahoma City. He kept noticing that customers would stop adding items once the hand basket became too heavy. They would head to the cashier without looking at other products in the store. So he came up with a creative idea: shopping carts.

One of Goldman's early carts is housed in the collection of the Smithsonian Institution today. The museum records show that he filed his patent application on March 14, 1938, and received approval on April 9, 1940. The patent was called "Folding Basket Carriage for Self-Service Stores." It turned a small everyday problem into a major retail innovation.

Goldman came up with the idea during the Great Depression. He was constantly looking for ways to keep his stores open. At that time, supermarkets were still a new trend. Customers had not yet gotten used to choosing their own goods without help from store clerks. A basket that filled up fast meant people bought less. For a store trying to survive hard times, that was a real problem.


The chair that rolled into an idea

Goldman's first attempt was anything but elegant. He experimented with two folding chairs set up face to face, attaching wheels to the bottom and a basket on top to make a crude, wheeled frame. It had nothing in common with the shopping carts used nowadays. However, the core concept proved to be efficient enough to implement it at his store. On June 4, 1937, Goldman presented the final design at his store named Humpty Dumpty in Oklahoma City. It was a folding metal frame that carried two stacked wire baskets.

Shoppers weren’t initially impressed

At first, almost no one was interested in the new shopping cart. Smithsonian Magazine reports that women thought it looked too much like a baby stroller and didn't want to push such strollers through grocery stores. Men were convinced that pushing the cart would make them look weak and unmanly. Instead of pursuing an engineering fix, Goldman got more creative. He employed good-looking young men and women who would walk through the aisles. They would push the carts and shop with them while other shoppers watched. Shoppers became curious about this behavior and started following suit. Soon enough, grocers from all over the country were requesting carts. Some store owners had to wait for as long as seven years to get one. This led to Goldman designing the well-known nesting cart that could stack neatly and save space in stores.

Why a bigger cart quietly changes what people buy

Goldman's shopping cart didn't just spare people's arms. It also increased the number of items customers bought without them realizing it. This hypothesis was examined in a 2024 study by researchers from Warwick Business School and Xi'an Jiaotong-Liverpool University. The researchers conducted two field studies and one laboratory study. Customers who used larger carts purchased more items. They also spent more money on their purchases and stayed in the store longer than customers who had smaller carts. The research identifies cart size as a basic mechanism that stores can use to increase consumer purchases. In short, the same basic idea that guided Goldman in the 1930s still informs the design of supermarkets today.

A simple invention that reshaped supermarkets

Once customers started using the cart, things around them began to change as well. Groceries became larger. Companies began packaging goods in larger quantities because shoppers could now buy more in a single trip. An idea born out of necessity and aimed at solving one small problem turned into a solution that changed the whole industry. Wider aisles and bulk food sections appeared due to this invention. Smithsonian Magazine notes that an estimated 20 to 25 million shopping carts roam in American grocery stores on any given day. In other words, there is one shopping cart for every 13 persons in America. The Smithsonian Institution still keeps Goldman's original cart as a piece of American design history. It is a reminder that some of the most ordinary objects in daily life started with someone paying close attention to a small, everyday frustration. The next time a shopping cart feels a little too easy to fill up, remember that this was the whole point from the very beginning.