['In', 'the', 'early', 'days', 'of', 'textile', 'manufacturing', ',', 'the', 'introduction', 'of', 'cone-pulleys', 'was', 'revolutionary', '.', 'These', 'cone-pulleys', 'were', 'crucial', 'in', 'the', 'bobbin-and-fly', 'frame', ',', 'as', 'they', 'allowed', 'for', 'the', 'adjustment', 'of', 'the', 'bobbin', 'speed', ',', 'enhancing', 'the', 'efficiency', 'of', 'the', 'spinning', 'process', '.', 'By', 'utilizing', 'the', 'differential', 'motion', 'created', 'by', 'the', 'cone-pulleys', ',', 'manufacturers', 'could', 'optimize', 'the', 'filling', 'of', 'the', 'bobbins', ',', 'leading', 'to', 'a', 'significant', 'increase', 'in', 'productivity', '.', 'The', 'design', 'and', 'implementation', 'of', 'these', 'cone-pulleys', 'marked', 'a', 'pivotal', 'advancement', 'in', 'textile', 'machinery', 'technology', '.']
[[11, 11, 'Textile Machinery']]