Fig. 2973.
Fig. 2974.
The forging of wrought-iron wheels for locomotives is an excellent example. The spokes are first forged in two pieces, as 1 and 2 in [Fig. 2973], and then welded to form the complete spoke. Piece 1 is first forged in dies under the steam hammer to the form shown in [Fig. 2974], the dimensions being correct when the faces of the dies meet. The stud c d is then drawn out to the required length and dimensions.
Fig. 2975.