Based on your description — heavy iron, hinge, jagged teeth inside a curved jaw, opens and closes — it sounds like a vintage farm tool designed to grip or clamp something sturdy. A few possibilities come to mind:
1. Farrier’s Hoof Puller / Horse Hoof Clamp
- Used in barns and stables.
- Designed to grip a horse’s hoof for trimming or shoeing.
- The jagged teeth prevent slipping, and the hinge allows opening/closing.
2. Livestock Tongs / Branding or Castration Tongs
- Used for holding livestock parts safely (like tails, ears, or legs) during treatment.
- The curved, toothed jaws provide grip without constant hand contact.
3. Antique Hay / Bale Clamp
- Some older tools had curved, toothed jaws to grab small bales or bundles of hay or straw.
- Less common today, mostly collectible.
💡 Tips to Identify for Sure
- Look for maker marks or stamps on the hinge or iron.
- Compare with antique farm tool catalogs or forums — many barn-cleanup finds are collectible.
- Consider size and weight: hoof tools tend to be smaller; bale clamps are larger and heavier.
If you want, I can pull up reference images of old barn tools with jagged, hinged jaws — that way we can match yours visually and narrow down exactly what it was meant to grab. Do you want me to do that?