['207', '(#275)', '############################################', 'WORSTED', 'DRAWING', 'MACHINES', 'It', 'will', 'further', 'be', 'realized', 'that', 'the', 'variable', 'bobbin', 'speed', 'may', 'involve-', '(c)', 'a', 'variable,', 'positive', 'but', 'delicate', 'control', 'of', 'the', 'lifter-plate', 'action,', 'in', 'order', 'that', 'a', 'solid,', 'level', 'bobbin', 'may', 'be', 'built', 'up,', 'this', 'being', 'made', 'the', 'basis', 'of', 'the', 'exact', 'changes', 'required,', 'these', 'changes', 'being', 'directly', 'or', 'indirectly', 'effected', 'by', 'the', 'cones', ';', 'and', '(d)', 'variation', 'as', 'required', 'in', 'the', 'indirect', 'action', 'of', 'other', 'parts', 'of', 'the', 'cone-box-such', 'as', 'in', 'the', 'twist', 'inserted', '--made', 'possible', 'through', 'the', 'delivery', 'with', 'which', 'even', 'fine', 'rovings', 'can', 'be', 'laid', 'on', 'the', 'bobbin', 'with', 'practically', 'no', 'strain', 'at', 'all.', 'The', 'cone', 'drawing', 'or', 'roving', 'box,', 'although', 'not', 'as', 'complex', 'as', 'the', 'mule,', 'has', 'already', 'been', 'treated', 'in', 'nomograph', 'form', 'so', 'that', 'all', 'that', 'need', 'further', 'be', 'illus-', 'trated', 'here', 'is', 'the', 'general', 'plan', 'of', 'a', 'typical', 'box', 'in', 'order', 'that', 'the', 'criticisms', 'which', 'are', 'made', 'in', 'the', 'succeeding', 'chapter', 'may', 'be', 'fully', 'appreciated.', 'In', 'Fig.', '61', 'a', 'plan', 'of', 'such', 'a', 'box', 'is', 'given,', 'by', 'means', 'of', 'which', 'the', 'following', 'prime', 'functions', 'may', 'be', 'realized-', 'I.', 'The', 'constant', 'drive', 'of', 'the', 'front', 'rollers', ';', '2.', 'The', 'constant', 'drive', 'of', 'the', 'flyers;', 'NOTE', ':', '(I)', 'and', '(2)', 'being', 'constant', 'maintain', 'a', 'constant', 'delivery', 'and', 'twist', 'to', 'the', 'sliver', 'being', 'treated.', '3.', 'The', 'direct', 'drive', 'to', 'the', 'bobbin', 'back', 'through', 'the', 'crown', 'wheel;', 'and', '3a.', 'The', 'modification', 'of', 'the', 'direct', 'drive', 'of', 'the', 'bobbin', 'by', 'the', 'crown', 'wheel', 'driven', 'through', 'the', 'cones', ';', 'а.', '205']
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