Fig. 9.
Fig. 10. Bending Fork.
In [Figure 11] and [Figure 12] are shown grilles which are made from flat stock. The scrolls in this case were made after the bars had been welded in place. They could be made first and then riveted or fastened with iron bands, but welding of course makes a better job.
Fig. 11. Grille.
In [Figure 13] is shown a drawing for a welded scroll. Notice the dotted line at A. This is where the weld is made. At B, the pieces are shown in position to be welded by the separate heat method. In doing this the length is measured on the drawing with a string, and the three pieces cut. The two short ones are upset; and one is laid on top of the other; then heated and welded at the same time they are scarfed. The long piece is upset and welded to the short one. They are then formed.
Fig. 13.