Thanks for the links! I realise Hern dose not know what a Carronade looks like. I am still curious about the origin of this cannon design. If it is just a cute signal cannon I would love to know, than I can call it my cute signal cannon. If any one has a clue I would love to here about it. I would also like to here your best guess on it's origin. I can not wait to finish this cannon because I am already having visions of a firecracker cannon for my next project.
I haven't delt with Hern folks, so it may be that they found a cannon made by Carronade (hence could be called a Carronade) that we are not yet aware of. On the other hand, they could have just taken the principle - a short barrelled, large bore naval cannon with trunions below the tube or below center - and just made up something that would sell like hot-cakes. Place your bets.
This is one of the reasons for using 'original sources' in research.