SPEEDING PULLEYS.
27. To know what pulley will drive your cylinder faster or slower. Multiply the speed you would like to have it run, by diameter of pulley overhead, that carries the cylinder, and divide that by the speed you are now running. Will give you pulley required.
TAKING UP BELTS.
28. To know how to take up a belt, when you change pulleys. If your belt is tight enough with the pulley you now have on, for every inch that your pulley is smaller than you now have on, take out one inch and three-quarters of belting. If larger, right the reverse.
TWISTS.
29. To know what number of twists to the inch, for any number of yarn. On warp, multiply the square root of the number by 5. Frame filling by 4, and mule filling by 3-¼. For every ten numbers below thirty take away two twist to the inch. For every ten numbers above thirty, add two.