The predecessor to Burger King, Insta-Burger King, began deploying the original broiling device in 1952 when its owners, Matthew Burns and Kieth Kramer, acquired the rights to George Read's Inst-Shake and Insta-Broiler machines. The Insta-Broiler cooked the burgers in a wire basket between two broilers, allowing the burgers to be cooked on both sides simultaneously. The machine was capable of cooking over 400 patties per hour, which allowed the company to grow rapidly. When McLamore and Edgarton opened their first Insta-Burger King location in Miami, they revamped the unit into what they called a "flame broiler" – the forerunner of the modern unit used by Burger King today. After the acquisition of Insta-Burger King in 1954, the pair contracted the construction of the newly designed flame broilers to the SaniServ company of Indianapolis, Indiana, for the initial run of broilers. Eventually, the company moved the manufacturing contract for the broiler units to Nieco Automatic Broilers of Windsor, California, who manufactured all subsequent units until the start of the 2000s.