In the drawing, FIG. 1 is a vertical partial section through the upper and lower plunger members and the punching, crimping, and stripping mechanisms forming a part of the invention; FIG. 2 is a second view similar to that of FIG. 1 showing the parts in a difierent operative position; FIG. 3 is an exploded view of the parts of the top set or die; FIG. 4 is an exploded view of the parts of the bott