ller gear will run thefront roll slower and give more twist. Thus wesee that the number of teeth in gear is inversely pro-portioned to the twist. Example: If a 30 teeth gear produces 2 turns perinch, what gear will produce 3 turns? We would expect a smaller gear, so we have, notold gear : old twist… … DRAFT AND TWIST DIAGRAMFIG. 17 The above, Fig. 17, being a sketch of the gearingon the Saeo-Pettee frame for 12 x 6 inch bobbin thetwist is found as follows: Front roll 1%6 inches diameter, circumfer-ence = 13/16 X 3.1416 = 3.731. = 1.2495 twist per inch. 130 X 46 X 50 X 55 3.731 X 71 X 40 X 46 X…
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