No one claimed this reward, but the spirit of invention was nevertheless awake, and experiments in more than one mechanical device were being made about the middle of the century. The first to be brought to actual completion was Hargreaves' spinning-jenny, invented in 1764. According to the traditional story James Hargreaves, a small master weaver living near Blackburn, on coming suddenly into the house caused his wife, who was spinning with the old high wheel, to spring up with a start and overset the wheel, which still continued whirling, but horizontally, and with its spindle in a vertical position. He was at once struck with the idea of using one wheel to cause a number of spindles to revolve by means of a continuous band, and by the device of substituting for the human hand a pair of bars which could be successively separated and closed, and which could be brought closer to or removed from the spindles on wheels, to spin several threads at the same time. On the basis of this idea and with the help of a neighboring mechanic he constructed a machine by which a man could spin eight threads at the same time. In honor of his wife he named it the "Spinning-jenny." The secret of this device soon came out and jennies spinning twenty or thirty or more threads at a time came into use here and there through the old spinning districts. At the same time a much more effective method was being brought to perfection by Richard Arkwright, who followed out some old experiments of Wyatt of Northampton. According to this plan the carded material was carried through successive pairs of rollers, each pair running more rapidly than the previous pair, thus stretching it out, while it was spun after leaving the last pair by flyers adapted from the old low or treadle spinning-wheel. Arkwright's first patent was taken out in 1769, and from that time forward he invented, patented, and manufactured a series of machines which made possible the spinning of a number of threads at the same time very much more rapidly than even the spinning-jenny. Great numbers of Arkwright's spinning-machines were manufactured and sold by him and his partners. He made others for use in cotton mills carried on by himself with various partners in different parts of the country. His patent was eventually set aside as having been unfairly obtained, and the machines were soon generally manufactured and used. Improvements followed. An ingenious weaver named Samuel Crompton, perceiving that the roller spinning was more rapid but that the jennies would spin the finer thread, combined the two devices into one machine, known from its hybrid origin as the "mule." This was invented in 1779, and as it was not patented it soon came into general use. These inventions in spinning reacted on the earlier processes and led to a rapid development of carding and combing machines. A carding cylinder had been invented by Paul as far back as 1748, and now came into general use, while several