Revolving PISTOLs were patented by Samual Colt.
In the Thirties. The Eighteen-Thirties. Don’t take my word for it; look it up.
Several other types of pistols existed well before then; mostly single-shot, some double-barrel, but there were other repeaters.
Perhaps because Sam Colt’s revolving PISTOLS were so instrumental in the newly-formed Republic of Texas surviving* against raiding Mexican soldiers and Comanches, we Texians, and even some Texans, still tend to refer to revolvers as pistols. If a pistol is an auto-loader, well, then, it is an automatic pistol, or auto-pistol. “Auto-loader” sounds kinda British, which is OK, as Brits are cool.
*Revolving pistols had no role in the Texas Revolution, but started arriving soon afterward. Border disputes continued, for years.