['In', 'the', 'early', '20th', 'century', ',', 'the', 'advancements', 'in', 'textile', 'machinery', 'revolutionized', 'the', 'industry', '.', 'One', 'of', 'the', 'critical', 'components', 'used', 'in', 'carding', 'machines', 'was', 'the', 'doffer', ',', 'which', 'played', 'an', 'essential', 'role', 'in', 'transferring', 'wool', 'from', 'one', 'swift', 'to', 'another', '.', 'The', 'doffer', 'is', 'a', 'cylinder', 'positioned', 'between', 'the', 'two', 'swifts', ',', 'facilitating', 'the', 'smooth', 'flow', 'of', 'wool', ',', 'thus', 'enhancing', 'the', 'efficiency', 'of', 'the', 'carding', 'process', '.']
[[26, 26, 'Textile Machinery']]