A bit for a horse is one item. It is broken where it curved to make a U shape that pressed on tongue when turned.
A possible bearing is the other. A softer than metal insert inside ,and a hanger to allow the whole thing to pivot,but only a guess.
A Farmall cub tractor has a kinda similar but larger clutch bearing.
Thanks for the ideas. I wish I could find a similar image like the one I have. I thought it might be horse related. Maybe I can go back and find the other half.