['193', '(', '255', ')', 'WORSTED DRAWING MACHINES', '1.', 'The', 'Gill-box', 'careful', 'study', 'of', 'the', 'pre paring gill-boxes', ',', 'strong gill-boxes', 'and', 'finisher gill-boxes', '(', '"', 'Wool', 'Carding', 'and', 'Combing', ',', '"', 'p.', '200', ')', 'will', 'have', 'cleared', 'the', 'way', 'for', 'here', 'studying', 'just', 'those', 'special', 'points', 'which', 'the', 'worsted', 'drawer', 'must', 'perfectly', 'apprehend.', 'Gill-boxes', 'may', 'be', 'studied', 'under', 'the', 'following', 'heads', ':', '-', '(', 'a', ')', 'Ordinary gill-boxes', ';', '(', '6', ')', 'Extraordinary gill-boxes', ',', 'these', 'being', '1.', 'Expanding screw-thread gill-boxes', ';', '2.', 'Double sets of fallers gill-boxes', ';', '3.', 'Double or treble thread gill-boxes', ';', '4.', 'The', 'O.P.S gill-box', ';', 'and', '5.', 'The', 'intersecting gill-box', 'To', 'illustrate', 'the', 'ordinary', 'gill-box', 'in', 'a', 'multiple', 'form', 'Fig.', '56', 'is', 'given.', 'In', 'this', 'figure', ',', 'four', 'heads', 'economically', 'controlled', 'are', 'shown', ',', 'the', 'following', 'calculations', 'being', 'arranged', 'to', 'illustrate', 'clearly', 'without', 'further', 'details', 'the', 'principles', 'of', 'driving', 'and', 'calculation', 'involved.', 'Total', 'Draft', ':', 'Surface', 'speed', 'of', 'front rollers', ':', '50', 'm', '/', 'm', 'x', '35', 'x', '65', 'x', '70', '=', '6.26', 'Surface', 'speed', 'of', 'back rollers', ':', '50', 'm', '/', 'm', 'x', '65', 'x', '17', 'x', '23', 'Back', 'Draft', ':', 'Speed', 'of', 'Fallers', '70', 'x', '65', 'x', '25', 'x', '11', 'm', '/', 'm', 'Surface', 'speed', 'of', 'back rollers', ':', '50', 'm', '/', 'm', 'x', 'tt', 'x', '23', 'x', '17', 'x', '18', '=', "I'13", 'Front', 'Draft', ':', 'Surface', 'speed', 'of', 'front rollers', ':', '50', 'm', '/', 'm', 'x', '+', 'x', '35', 'x', '18', 'Speed', 'of', 'Fallers', ':', '65', 'x', '25', 'x', '11', 'm', '/', 'm', '5:54', 'Total', 'Draft', ':', 'I.13', 'X', '5:54', '=', '6.26', 'It', 'will', 'be', 'useful', 'to', 'calculate', 'the', 'gauge-point', 'so', 'that', 'either', 'N', '193']
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