Antoine-Joseph Sax
I’m doing a little experiment, of sorts, with this post. Yes, you’re going to get a lot of great pics. In addition to that, though, I’m doing a collaboration with Helen from Bassic-Sax.info regarding collecting the saxophone. I thought this would be a good place to start!

Adolphe Sax patent drawing from French patent #3226 (March 21, 1846).
This picture taken from Selmer.fr.