US Patent 8113091 Hammer with a socket hole blocking device

A hammer includes a metal hammerhead having a socket hole, a wooden handle fastened to the socket hole, and a socket hole blocking device blocking the socket hole. The socket hole blocking device includes a cap, which is fitted into the socket hole in flush with the metal hammerhead and has wedge holes and a magnet embedded therein for securing an iron nail temporarily for driving into a workpiece, and metal wedge bolts respectively fitted into the wedge holes and driven into the wooden handle.