picked this up at the hoosier wheels swap meet guy said it was some kind of bead roller think he looked at the manufactures website that is what they have for sale. I am thinking more like an English wheel for making curves but not much of a throat any metal shaper use one of these.
Quickest way to get an answer (and most reliable answer) would be to call Irvan-Smith: https://www.irvansmith.com/scart/index.php rvan-Smith, Inc. 1027 Central Drive NW Concord, NC 28027 800-221-7223 704-788-2554 Fax 704-784-4120Store Hours: Monday - Friday 8AM-5PM EST Cheers, Harv
Company started by Vic Irvan, father of NASCAR racer Ernie Irvan. With a long oval track racing history, flare tool for fender flares, is a pretty good guess.
I would tend to believe it's from when Foyt ran an occasional Cup race, also. If the maker can't help, maybe the Stapleton42 youtube channel can. They've visited a lot of old race shops.
Pictures aren't very clear, but it appears that it is not designed to be held by hand due to the curved bracket. It looks like possibly a bolt hole thru it where it could be attached to something and possibly a stud sticking out the bottom. My guess is it might quickly form a curve in a long piece of metal, and by adjusting screw attached to it, the radius could gradually be increased. It would have to be some thin metal possibly aluminum. Possibly finishing the edges of a hood panel that had a large radius already. My best guess........
I called the builder Irvin Smith he knew what it was and was used for. also explained what the shot or sand in the tube was for. it was to check the rear spoiler on winston cup cars on super speedways to make sure they wouldn't fold at speed . just hung off the spoiler for a weight test. not for metal work at all