Fig. 2859.
Fig. 2860.
In some cases, for small work, the upper swage is guided by the lower one: thus, in [Fig. 2858] is a swage for a cross piece, and the outside of its base is squared and fits easily within the upper part of the lower one shown in [Fig. 2859]. For very small work, on which the hand hammer is sufficiently heavy to perform the swaging, a spring swage may be use: thus, in [Fig. 2860] is a swage for pieces of 3⁄8, 5⁄16, and 1⁄4 inch in diameter, and having a square stem fitting into the square hole in the anvil. [Fig. 2861] represents a spring swage for a pin having a collar, and it may be observed that the recess to form the collar must be tapered narrowest at the bottom, so that the top swage will readily release itself by the force of the spring, and so that the work may easily be revolved in the lower one. A similar tool is shown in [Fig. 2862], designed for punching sheet metal cold, the die d being changeable for different sizes of punches p.
Fig. 2861.
