[Fig. 468.] View of the pan.
—g.[469.] Flat ring of cast-iron for supporting the inner mould.
—g.[470.] Construction of the inner mould.
—g.[471.] Formation of the outer surface of the pan.
—g.[472.] Finished mould.
—g.[473.] Position of the two flat cast-iron rings, destined to sustain the moulds of the inner and the outer surface.
Gas-retort Moulding.
—g.[474.] Vertical projection, perpendicular to the axis of the retort; and two sections, the one upright, the other horizontal.
—g.[475.] Construction of the core of the retort.
—g.[476.] Disposition of the outer mould.