Good research guys. I've done some of my own today. I've found two other companies that mention the word "Carpenter" when describing their half hatchets: Vaughan and Mann Edge. They don't say what makes them different from their half hatchets. Even the Stanley advertisement calls it the Carpenters Special Half Hatchet. Just depends on the company I guess. But this designation is rare. I've found many many more old catalogs and advertisements that call these half hatchets.