Fig. 2927.
Fig. 2928.
Fig. 2929.
[Figs. 2927], [2928], and [2929] represent a method of forging a fifth wheel for a vehicle. A rectangular piece of Norway iron is fullered to form the recess at c in [Fig. 2927]. Holes are then punched at h and splits are made to the dotted lines shown in the figure. The ends are then opened out, forming a piece such as in [Fig. 2928]. The letter a represents the same face of the work in all the figures, being the edge in [Fig. 2927], and the top face after the ends are opened out. The four arms may then be dressed to shape, the two lower ones being drawn out and threaded before being finally closed to shape. A piece may then be welded on one end, as at b, to complete the circle.