['In', 'the', 'early', '20th', 'century', ',', 'the', 'textile', 'industry', 'relied', 'heavily', 'on', 'various', 'types', 'of', 'machinery', 'to', 'improve', 'efficiency', 'and', 'productivity', '.', 'One', 'such', 'invention', 'was', 'the', 'bobbin', 'and', 'fly', 'frame', ',', 'which', 'was', 'known', 'for', 'its', 'innovative', "'", 'box', 'of', 'tricks', "'", '.', 'This', 'differential', 'gearing', 'system', 'allowed', 'for', 'precise', 'control', 'over', 'the', 'speed', 'ratios', 'between', 'the', 'bobbins', 'and', 'the', 'front', 'rollers', ',', 'significantly', 'enhancing', 'the', 'quality', 'of', 'the', 'yarn', 'produced', '.', 'Factories', 'praised', 'this', 'mechanism', 'for', 'its', 'ability', 'to', 'adapt', 'to', 'different', 'materials', 'and', 'production', 'speeds', ',', 'making', 'it', 'an', 'essential', 'component', 'in', 'modern', 'textile', 'manufacturing', '.']
[[27, 30, 'Textile Machinery'], [39, 41, 'Textile Machinery']]