Safeway sale, Goldman and his brother lost much of their fortune in the crash; and being banned from competing with Safeway in Tulsa due to a non-competition agreement, they moved to Oklahoma City where they purchased five grocery stores and formed a new company called Standard Grocery. They soon implemented the lessons they had learned in Tulsa and with their profits purchased the faltering Humpty-Dumpty grocery store chain in 1934. Alfred died in 1937. In 1943, Sylvan merged the two brands into one company: Standard-Humpty Dumpty. Concerned with alleviating the difficulty women had with the self-serve concept as they often had to handle both the shopping basket and children, he developed what was to become the shopping cart. Invention of shopping cart He introduced the device on June 4, 1937, in the Humpty Dumpty supermarket chain in Oklahoma City, of which he was the owner. With the assistance of a mechanic named Fred Young, Goldman constructed the first shopping cart, basing his design on that of a wooden folding chair. They built it with a metal frame and added wheels and wire baskets. Another mechanic, Arthur Kosted, developed a method to mass-produce the carts by inventing an assembly line capable of forming and welding the wire. The cart was awarded patent number 2,196,914 on April 9, 1940 (Filing date: March 14, 1938), titled, "Folding Basket Carriage for Self-Service Stores". They advertised the invention as part of a new "No Basket Carrying Plan." The invention did not catch on immediately. Men found them effeminate; women found them suggestive of a baby carriage. "I've pushed my last baby buggy," offended women informed him. After hiring several male and female models to push his new invention around his store and demonstrate their utility, as well as greeters to explain their use, his folding-style shopping carts became extremely popular and Goldman became a multimillionaire by collecting a royalty on every folding design shopping cart in the United States. Sylvan Goldman also manufactured the more familiar and more modern "nesting cart" under a license granted by Telescope Carts, Inc. In 1946, Orla Watson, co-founder of Telescope Carts, Inc. developed an innovative "nesting" shopping cart that did not require disassembly after each use as Goldman's designs did, and which allowed for the shopping carts to telescope, or "nest", by simply shoving the carts together. Goldman patented his own "Nest-Kart" over a year later in 1948, so