154 in contact with frame 22 the frame return spring 150 is adapted to return the frame to its original idle position after the handle and frame have been depressed referring to fig2 a and 2b initially the strike face 100 of die 98 is not in contact with the top face 84 of counter 82 in order to form a seal on an item such as a document or sheet the item is placed between the die 98 and the counter 82 initially when the handle is in the extended position shown in fig2 a the lever pivot element 118 is located at the forward end of the slot 114 of lever 102 when downward pressure is applied on the handle 20 the lever 102 is urged forward so that the tip end 108 is urged into contact with the impact element referring to fig3 when tip 110 of lever 102 is positioned in engagement with the upper shoulder 136 of impact element 128 the handle may be pivoted downwardly toward base 24 the boss 56 of handle 20 urges the lever 102 to pivot about the lever pivot element 118 such action causes the tip 108 of the lever 102 to urge the bottom face 130 of the impact element 128 away from the die 98 referring to fig4 further downward movement of the handle 20 urges the lever 102 and the tip end 108 of the lever to pivot further this movement further elevates the bottom face 130 of the impact element 128 above the die 98 as the lever 102 is being pivoted the torsion spring 120 is being compressed thereby storing energy in the torsion spring in addition compression force is being stored.