These are three interesting vintage tools. The brace is a U.S. government issued Stanley brace with a 6" swing. There is a stamp that reads, "O.D. USA", which I believe stands for ordinance department. Braces with a 6" swing are less common.
The second is a patented wire winding tool. It was patent in 1907 by Henry J. Hjorth and manufactured by the Remington Tool & Machine Company.
The last tools is a stamp of the name A.D. Wittenbeck. This was likely used to stamp the owner's tools, furniture, or other woodworking projects they made.
