Welcome Cline to the forum, Alloy Artifacts doesn't mention anything about Billings & Spencer making ratchet drills, that said they probably made them under someone elses patent. The pictures are a little dark and I can't tell much from them as to the detail of the ratchet mechanism. What are the markings on them? There are several atents in the 1890's - 1910's time frame for ratchet drills. They carry a master catagory of 408 in the patent classifications. The larger section on the back side of the drill head unscrews to apply pressure on the drill bit. This would have to be braced against something solid to do this. I have a few in my collection but none like yours.