Characteristics of Sewing threads Yarn type Characteristics Applications Cotton Usually high quality, combed, ring spun, Almost any sewings bleached, dyed, singed, on cotton fabrics. mercerized and lubricated. Typically 7.4�84 tex Silk Doubled and folded silk filament Fancy button holes yarns; dyed and lubricated.14�80 tex.

8.2 INVENTION OF SEWING MACHINE: The Invention of Sewing machine was the combined ideas and work of many inventors. In 1790, the first patent was given to Thomas Saint, an Englishman, for a machine that sewed on leather.