| Existing comment:
These are flasks which were used for casting. As a sign says: Skilled workers, known as moulders, cast iron products here. With hand-held ladles, moulders poured molten iron tapped from the furnace into a sand mold formed in a flask. The flask, two boxes joined by clamps, permitted molding detailed iron stove pipes. Once iron cooled, moulders separated the boxes and prepared stove plates for market. |