['The', 'kier', 'was', 'an', 'essential', 'piece', 'of', 'textile', 'machinery', 'during', 'the', 'dyeing', 'process', '.', 'Made', 'of', 'robust', 'materials', ',', 'the', 'kier', 'allowed', 'for', 'the', 'boiling', 'of', 'fabrics', 'at', 'controlled', 'pressures', ',', 'ensuring', 'even', 'dye', 'penetration', '.', 'This', 'vessel', 'was', 'crucial', 'for', 'wool', 'and', 'cotton', 'processing', ',', 'where', 'high', 'temperatures', 'were', 'necessary', 'to', 'achieve', 'vibrant', 'colors', '.', 'The', 'design', 'of', 'the', 'kier', 'evolved', 'over', 'time', ',', 'incorporating', 'safety', 'features', 'and', 'improved', 'efficiency', 'that', 'revolutionized', 'textile', 'production', '.']
[[1, 1, 'Textile Machinery']]