My best guess: Plow wrench, Deering pattern. I can make out the letters "......RA", (letters on the right side), but on't know who's name that might be part of.
However, I now see a lot listed as just "utility" wrenches (exactly as Cpt. Zero said), so it may be that unless we could get a read on the name we don't know for certain what the intended use was (even if otherwise identical to some other brand made for something else, like a tractor, etc.)
But I'm sure on the Deering pattern.