Kelli ladled out the contents of the kettles onto each plate.
When it has completely cleared, the liquid caustic is ladled or pumped out into sheet-iron drums, holding about 6 cwt.
The frames into which hard soaps are ladled for cooling and solidification consist of rectangular boxes made of iron plates and bound and clamped together in a way that allows the sides to be removed when required; wooden frames are used in the case of mottled soaps.
Directly work is suspended the glass remaining in the crucibles is ladled into water, drained and dried.
All the earlier attempts in this direction failed on account of the difficulty of bringing the glass to the machines without introducing air-bells, which are always formed in molten glass when it is ladled or poured from one vessel into another.