['225', '(#297)', '############################################', 'TYPES', 'OF', 'DRAWING', 'MACHINES', 'diameter', 'of', 'the', 'barrel', '+4', '(diameter', 'of', 'the', 'sliver)', ';', 'for', '3rd', 'layer', 'of', 'the', 'barrel', '+', '6', '(diameter', 'of', 'the', 'sliver)', ';', 'for', '4th', 'layer', 'of', 'the', 'barrel', '+', '8', '(diameter', 'of', 'the', 'sliver);', 'and', 'so', 'on.', 'From', 'these', 'diameters', 'the', 'increase', 'in', 'circumference', 'may', 'readily', 'be', 'calculated.', 'Now', 'if', 'the', 'sliver', 'could', 'be', 'fed', 'to', 'the', 'bobbin', 'at', 'an', 'increased', 'rate', 'exactly', 'coinciding', 'with', 'the', 'increase', 'in', 'the', 'circumference', 'of', 'the', 'bobbin,', 'the', 'flyer', 'continuing', 'to', 'revolve', 'at', 'the', 'same', 'rate,', 'the', 'bobbin', 'would', 'also', 'continue', 'to', 'revolve', 'at', 'the', 'same', 'rate.', 'But', 'the', 'actual', 'turns', 'would', 'be', 'the', 'same,', 'therefore', 'fewer', 'turns', 'per', 'inch', 'per', 'unit', 'length.', 'Further,', 'the', 'varied', 'delivery', 'of', 'the', 'sliver', 'would', 'necessitate', 'such', 'complexities', 'that', 'it', 'is', 'apparently', 'not', 'to', 'be', 'thought', 'of—a', 'uniform', 'delivery', 'of', 'the', 'sliver', 'is', 'invariably', 'adopted.', 'Now', 'this', 'means', 'that', 'as', 'the', 'bobbin—layer', 'by', 'layer—increases', 'in', 'circumference', 'it', 'must', 'more', 'and', 'more', 'nearly', 'approach', 'the', 'flyer', 'in', 'speed.', 'The', 'difference', 'between', 'open', 'and', 'cone"', 'drawing', 'may', 'now', 'be', 'readily', 'understood.', 'In', '"open"', 'drawing', 'the', 'bobbin', 'is', 'so', 'tensioned', 'that', 'while', 'it', 'will', 'not', 'over-run”', 'it', 'will', 'not', 'strain', 'the', 'sliver', 'in', 'its', '“', 'lagging', 'behind.”', 'But', 'to', 'ensure', 'this,', 'as', 'already', 'noted,', 'considerable', 'twist', 'must', 'be', 'put', 'into', 'the', 'sliver.', 'Careful', 'consideration', 'of', 'the', 'conditions', 'prevailing', 'at', 'the', 'start', 'and', 'at', 'the', 'finish', 'of', 'the', 'finer', 'drawing', 'or', 'spinning', 'frames', 'will', 'reveal', 'an', 'added', 'difficulty.', 'In', '"cone', '”', 'drawing', 'the', 'bobbin', 'may', 'be', 'positively', 'driven', 'at', 'the', 'calculated', 'rate', 'of', 'increase,', 'or', 'decreased', 'as', 'required.', 'By', 'this', 'means-', '(a)', 'strain', 'is', 'taken', 'off', 'the', 'sliver', 'and', 'levelness', 'so', 'far', 'as', 'possible', 'ensured', ';', 'b)', 'much', 'or', 'little', 'twist', 'may', 'be', 'inserted', ';', '(c)', 'bobbins', 'of', 'any', 'desired', 'size', 'may', 'be', 'employed.', 'P', '225']
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