Fig. 2979.
The spokes thus forged are then put together, as in [Fig. 2979], b representing a wrought-iron band, encircling the rim of the wheel and closed upon the same by the bolt and nut at n.
Fig. 2980.
Two washers are then forged, to be placed and welded in as at w w, in [Fig. 2980].
The welding together of the spokes and of the washers to the spokes proceeds simultaneously. The washers are heated to come to a welding heat at the same time as the wheel hub is at a welding heat, and the two are welded together under a steam hammer. During the heating of the wheel hub, however, the band b, [Fig. 2979], is tightened up with the screw to bring the spokes into closer contact when heated to the welding point.