['201', '(', '267', ')', 'WORSTED DRAWING MACHINES', 'in', 'the', 'two-spindle', 'gill-box', 'in', 'which', 'the', 'slivers', 'on', 'emerging', 'from', 'the', 'front rollers', 'are', 'slightly', 'twisted', '(', 'see', 'p.', '200', ')', ',', 'and', 'wound', 'on', 'to', 'a', 'bobbin', 'In', 'Fig.', '58', 'this', 'machine', 'is', 'illustrated', 'diagrammatically', 'in', 'elevation', 'and', 'plan.', 'The', 'calculations', 'involved', 'are', 'so', 'similar', 'on', 'the', 'one', 'hand', 'to', 'those', 'involved', 'in', 'gill-box', 'calculation', 'and', 'on', 'the', 'other', 'hand', 'to', 'ordinary drawing-box', 'calcu-', 'lations', 'that', 'a', 'brief', 'statement', 'of', 'the', 'calculations', 'in-', 'volved', 'is', 'all', 'that', 'is', 'necesary', ':', 'Back Roller', 'Speed', ':', '500', 'x', '61', 'x', '40', 'x', '17', 'x', '20', 'x', '3', 'x', 'tt', '12', 'X', '70', 'X', '70', 'X', '70', '98', 'inches', 'per', 'minute.', 'Faller', 'Speed', ':', '500', 'x', '64', 'x', '40', '18', 'x', '**', '=I12', 'inches', 'per', '12', 'X', '70', 'X', '18', 'minute.', 'Front Roller', 'Speed', ':', '500', 'x', '64', 'x', '40', 'x', '(', '35', ')', '*', 'If', 'x', 'tt', '12', 'х', '70', 'х', 'бо', '-', '477', 'inches', 'per', 'minute.', 'Spindle', 'Speed', ':', '500', 'x', '61', 'x', '8', 'x', '20', 'x', '5', '82', 'revs.', 'per', '12', 'x', '63', 'x', 'бо', 'х', '62', 'minute.', 'Total', 'Draft', '484', '•', '98', '4.87.', 'Draft', 'between', 'Back Rollers', 'and', 'Fallers', '=', '112', ';', '98', '=', "I'14", 'Draft', 'between', 'Fallers', 'and', 'Front Rollers', '=', '484', '•', '112', "=4'32.", 'The', 'Gauge', 'Point', 'should', 'be', 'worked', 'out', 'with', 'the', '(', '35', ')', 'wheel', 'as', 'the', 'change', 'wheel.', '82', 'X', '12', 'The', 'turns', 'per', 'foot', '=', '2:06', 'turns', 'per', 'foot.', '484', 'The', 'mangle', 'lifter-plate', 'control', 'should', 'be', 'especially', 'noted.', 'The', 'control', 'of', 'the', 'lifter-plate', 'to', 'effect', 'the', 're-', '65', '*', 'A', 'double-threaded', 'screw', 'is', 'employed', 'here', ',', 'hence', 'double', 'the', 'number', 'of', 'supporting', 'fallers', 'for', 'the', 'required', 'faller', 'speed.', '201']
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