Dished Head in Petals
A vessel head in petals round a crown plate: torispherical, hemispherical, semi-elliptical (2:1), or a cone with a knuckle. A vessel head made of petals round a crown plate, for heads too large to press in one piece: torispherical, hemispherical or semi-elliptical (2:1), or a cone with a knuckle at its large end.
How the dished head in petals is developed, with a worked example · Vessels