That ring absolutely looks like horse tack, possibly a saddle buckle?? The bent piece looks too small to be a stirrup or carriage step, but could also be horse tack related...
The pointed object looks a lot like the slaters chisels I find in my area, is that a bolt on top or just a squared off head? Around here they used them to separate slabs of slate into thinner sheets for shingles, blackboards, steeping stones etc.
I'll watch for others replies to see what they think as well. Id'ing this stuff is almost as much fun as digging it.