Frank Winfield Woolworth also known as Frank W. Woolworth or F.W. Woolworth was an American entrepreneur and the founder of F. W. Woolworth Company and the operator of variety stores known as "Five-and-Dimes" or dimestores, which featured a low-priced selection of merchandise. He pioneered the now-common practices of buying merchandise directly from manufacturers and fixing the selling prices on items, rather than haggling. He was also the first to use self-service display cases, so customers could examine what they wanted to buy without the help of a sales clerk.

https://en.wikipedia.org/wiki/Frank_Winfield_Woolworth