SLEEPERS, in the glass-trade, are the large iron-bars crossing the smaller ones, and hindering the passage of the coals, but leaving room for the ashes.
SLEEPERS, in the glass-trade
sub_entry · 152 chars · lineage ↗ · page image at NLS ↗
sub_entry · 152 chars · lineage ↗ · page image at NLS ↗
SLEEPERS, in the glass-trade, are the large iron-bars crossing the smaller ones, and hindering the passage of the coals, but leaving room for the ashes.