The Cleveland vacuum cleaner.
I'm not 100% certain, but it looks like an early design by James B. Kirby. Jim was well known as experimenting with a number of styles, especially in the 1920's. Some of his early prototypes were given names like 'The Cleveland,' and so on. I won't know for certain till I get access to my book of Kirby patents. Look on the nameplate, and find the first and last numbers. The first numbers, and year, will tell you how far back the company goes. Then check the latest. If it says 'patent pending' then the machine, or part, be that the cord, bag, housing, wheels and so on has not been issued a patent yet. It's a lot more complicated but that should give you a ballpark time frame.
In April I plan to go to Indiana, where all my electric vacuum cleaners, and club related paperwork is in storage, and bring it here to Pa..
Starting in 1905, ther was a company called P. A. Geier, which was located in Cleveland, Ohio that made a whole host of vacuum cleaner parts. This was also the place where Royal got it's start. (Royal began in 1905 as a non-electric upright pumper, and was outfitted with an electric motor a few years later.) The P. A. Geier company made the parts for Health-Mor, (Parent company of Filter Queen) Bee-Vac, Hotpoint, Torrington, and so on.
Jim Kirby also made a number of designs that became Apex. His association with Scott & Fetzer went back to 1918. This was during W.W.1, and he worked as what was called a dollar a year man. His assignment was the Scott & Fetzer company. Years later, he had them manufacture his Vacuette.
So, that 'Cleveland' could be an early Kirby design, or a early Royal.
If you want to learn the history of the Kirby, let me know.
By the way, here is a bit of club trivia. My username is Caligula, that was the name of my pet cat, 1984 - 2004. Caligula is a Roman term which means little boots. He was a cream colored cat with gold on his paws. That cat was also our club mascot. From 1985 -1993, all club meetings were held in my home in Naperville, Illinois. We had our first outside meeting at Hoover in 1994, and I moved to San Diego, California in 1995.
Alex.