Sewing machines, 9-1 to 9-39 oscillating type sewing machines, 9-3 to 9-18 Singer sewing machine 7-33, 9-13 to 9-18 lubrication, 9-14 modification of presser foot for webbing sewing, 9-17 to 9-18 needles and thread, 9-14 preparing the sewing, 9-17 regulating the length of stitch, 9-17 regulating the pressure on the material, 9-17 regulating the tension, 9-16 to 9-17 removing the bobbin, 9-16 removing the work, 9-17 replacing the bobbin and threading the shuttle, 9-16 setting the needle, 9-15 threading the machine, 9-15 to 9-16 winding the bobbin, 9-16 Singer sewing machine 31-15, 9-3 to 9-13 adjusting the feed dog, 9-8 adjusting the thread take-up spring, 9-8 to 9-13 commencing to sew, 9-12 lubrication, 9-4 preparing for sewing, 9-12 regulating the length of a stitch, 9-13 regulating the pressure on the material, 9-13 regulating the tension, 9-12 to 9-13 removing the bobbin case, 9-10 removing work, 9-13 replacing the bobbin case, 9-12 replacing the needle, 9-8 to 9-9 threading the bobbin case, 9-11 to 9-12 threading the machine, 9-10 timing the 31-15, 9-4 to 9-6 timing the feed dog with the needle, 9-6 to 9-7 timing the needle with the shuttle, 9-6 winding the bobbin, 9-10 to 9-11 rotary sewing machines, 9-18 to 9-39 class 111 sewing machines, 9-18 Consew 99R and 99R-3 sewing machine, 9-34 to 9-39 adjusting the bobbin thread tension, 9-35 adjustment of the thread take-up spring, 9-39 centering the needle in the throat (needle) plate, 9-37 preparing the machine for rope stitching (model 99R-3 only), 9-36 to 9-37 regulating the tension, 9-35 regulating the pressure of the presser foot, 9-35 setting the needle bar at the correct height, 9-37 stitch regulator and reverse sewing and tacking, 9-36 straight and zigzag sewing, 9-36 threading the 99R and 99R-3 machines, 9-34 to 9-35 timing the feeding mechanism, 9-38 to 9-39 timing the movement of the needle bar frame, 9-39 timing the sewing hook, 9-37 to 9-38 to raise or lower the feed dog, 9-39 to remove and replace and the sewing hook, 9-38 different models of the 111 W sewing machine, 9-18 and 9-19 111 W 150 sewing machine, 9-18 to 9-19 111 W 151 sewing machine, 9-19 111 W 152 sewing machine, 9-19 111 W 153 sewing machine, 9-19 111 W 154 sewing machine, 9-19 111 W 155 sewing machine, 9-19 functional features, 9-19 to 9-26 lubrication of the class 111 sewing machine, 9-22 to 9-23 needles and thread, 9-23 to 9-24 operation, 9-24 preparing for sewing, 9-25 removing the bobbin, 9-24 removing the work, 9-25 to 9-26 regulating the length of stitch, 9-25 regulating the pressure on the material, 9-25 regulating the tension, 9-25 INDEX-11