Prior to the latter part of the eighteenth century all cloths, whether of wool, cotton, silk, or flax, were manufactured by hand labor. The natural fabrics were, as described elsewhere in this work, spun into threads by the use of the simple spinning wheel, chiefly by the labor of women who were termed “Spinsters.” The threads thus obtained were made into cloth by the use of a loom upon the general principles above described, but of extremely simple design and operated solely by human power. Up to this time the making of threads or yarn and their transformation into cloth by the weavers, chiefly men, kept pace fairly with one another, the supply of thread or yarn being about equal to the demand by the weavers. “One good weaver,” says Dr. Ure, “could keep three active women at work spinning weft. In operating the loom, the shuttle which carried the thread back and forth between the raised and lowered sections of the warp was thrown back and forth with the hand, which required a constant extension of the hands to each side of the warp. In 1738 John Kay, an Englishman, devised a system by which the shuttle was thrown back and forth by means of strings attached at opposite ends of the lathe in which the shuttles ran, enabling a weaver to double the amount of cloth which he could manufacture within a given space of time, thus making the demand for yarn in excess of the supply.” “It was no uncommon thing,” says a writer on that subject, “for a weaver to walk three or four miles in a morning, and call on four or five spinners, before he could collect 255 weft to serve him for the remainder of the day.”
This stimulated active minds in those industries to devise some method for increasing the facilities for turning the wool or cotton or flax into the needed yarn, and James Hargreaves, a weaver, devised about 1764 a machine which he called the “spinning jenny,” in which were set eight spindles in a frame put in motion by a single wheel, and by moving backward and forward a moveable carriage containing a horizontal clasp to hold the material being twisted into threads, the quantity of yarn which one person could produce in a given length of time was greatly increased. Subsequently the number of spindles in the frame was increased to 20 or 30, and in time to more than 1,000. Hargreaves kept this invention secret for a time, using it merely to manufacture yarn for his own weaving, but it finally became known and the spinners of the neighborhood, believing that it would throw many out of employment, broke into his establishment and destroyed the machine. He, however, retired to Nottingham, erected a small mill and took out a patent for the “spinning jenny,” and in time it became to be an established method of manufacturing yarn and in a more elaborate form is the principal factor in the manufacture of cotton yarns in the great factories today, the number of spindles which a modern machine of this character now uses being often in excess of 1,000, instead of the 8 utilized by the original spinning jenny.