1. Look back at Figure 3.14 on page 315, which shows some of the stages in the development of the sewing machines. How do you think each of the following affected sewing machine development? (6 marks)

outside that Figure 3.14s] Early sewing machines were mechanically SWQP" operated by a hand crank. They could sew only 3 ice and Show Off the simple stitches. windshield. By r9r3, the windshield wiper - was standard ' equipment on cars, 5 trucks, and buses. Figure 3.14\" A major development in sewing machine design was the development 01 the foot-operated treadle. This left the operator's hands free to guide the tabric better. Figure 3.14s} Today's sewing machines run on electricity, and can produce a wide range of stitches