Talk about serendipity! I just this morning pulled a Weed set of these out of a gallon of vinegar, then brass-brushed the gunk off of it. Besides "WEED," mine says "PAT'D July 29, 1913." The head is cupped a tiny bit but not bent to 90° like yours, and mine have deeper and wider "reliefs" than yours do on the inside of the jaws in pic #2. I'd not've guessed they were tire chain pliers. Seems early, to me, but I'll track down the patent (and probably learn something, as usual).