Hi Tom.
If you're talking about Jim Kirby's first upright, you are correct, however, as far as my research tells me that was called 'The Broomstick.' I do have the patent info, though not scanned in at the moment. Jim did indeed work with Clarance, Edward, and Walter Frantz. Around that time he also became acquanted with Bill Orr of the Forte Wayne Electric company. My guess is that this company was based in Forte Wayne, Indiana and had a branch in Cleveland. As for the Frantz boys, they went on to perfect their own ideas.
The story of James B. Kirby is one that took me many years to research, but the information I got was from a man who knew Jim Kirby personally. Over the years I was able to confirm these stories with a number of top Kirby distributors. I also had the honor of talking shop with the head of the Kirby division, Adrian E. Budlong Jr. when my staff toured Kirby in 1978.