It is a wall mounted press, too old to be a can crusher, required a lot of force to do whatever its purpose was because the handle broke twice and only brazed once. That suggest it was used for pressing, crimping, forming, etc. something metallic.
Is, was there any nut trees on/near that wilderness Island that had the old camp on it, or do you know. I wasa thinking that if there were then maybe someone carried that “now defunct press” there in hopes of using it for cracking walnuts or hickory nuts with.