A look at an adjustable barbell Set from the Narragansett Machine Company, of Providence, Rhode Island, circa 1910 or so. Each plate weighs 5 pounds and the bar weighed ten pounds so when fully loaded, this set weighed 120 pounds in total which makes it just about perfect for home use. This set also featured something that I have never seen before or since: latches on the inner plates to keep the barbell plates in place.
Also of note is that fact that barbell plates and equipment from just about every other equipment company, including those who were older, are fairly “common” in comparison to this set. I know of no one who has even seen a single Narragansett Barbell or plate in the flesh, let alone owned one. If you should come across any, please let us know.