That looks & sounds like an impactor Lou... nifty model!
I got my jaw crusher on Friday, I've been hand feeding rocks into it the last couple days, some rocks are little harder to break than others, some won't break! and I have to fish them out. The 2x2 inch opening, pretty small and half the rock pile is much bigger than that! I'm tempted to buy a much bigger one yet cause busting rock is freaking awesome!!!
I got me self some scale gravel now.
Even putting the pea-size lumpy clay after it has been downsized from the dirt lump crusher is super fun, fines the dirt to powder... I'm working on building a bunch of conveyers atm for various tasks, now to add a couple more to make this Lil worker hands free too.