['In', 'the', 'early', 'textile', 'industry', ',', 'the', 'fulling', 'mill', 'played', 'a', 'crucial', 'role', 'in', 'the', 'processing', 'of', 'woolen', 'cloth', '.', 'This', 'machine', 'utilized', 'a', 'pair', 'of', 'heavy', 'wooden', 'mallets', 'fixed', 'in', 'an', 'iron', 'frame', 'above', 'a', 'trough', '.', 'As', 'the', 'mallets', 'were', 'lifted', 'by', 'cams', 'on', 'a', 'tappet', 'wheel', 'and', 'dropped', 'repeatedly', ',', 'they', 'effectively', 'beat', 'the', 'cloths', 'laid', 'in', 'the', 'trough', ',', 'helping', 'to', 'clean', 'and', 'thicken', 'the', 'fabric', '.', 'The', 'fulling', 'mill', 'was', 'essential', 'for', 'ensuring', 'the', 'durability', 'and', 'quality', 'of', 'the', 'finished', 'woolen', 'goods', '.']
[[7, 8, 'Textile Machinery']]