The manufacture of cotton goods was in a primitive state in England. Pure cotton fabrics could not be made, and the fustians that were produced had a warp of linen yarn in them, due to the fact that no way was known by which cotton yarn of sufficient strength could be spun. Arkwright soon learned these difficulties that arose from the absence of cotton warp and the deficiency of cotton weft, and his alert mind commenced to wonder whether he could not so improve on Hargreaves’ jenny as to overcome these difficulties. He was not a skilled mechanic himself, and so, when he decided to take up the subject, he employed a clockmaker, named Kay, to help him. Realizing the hostility to any improvement on the part of the cotton-spinners, he gave out that he was engaged in building a machine to solve the world-old problem of perpetual motion. Under this cloak he worked, and soon found that his new occupation was vastly more interesting than that of dealer in wigs had been. He was a shrewd man, and therefore, when he withdrew from that trade in 1767, it is probable that he foresaw that he was on the track of something better. His idea was that cotton could be spun by rollers, and he said that this thought occurred to him as he happened to watch a red-hot iron bar lengthened out by passing between two rollers. But the iron would necessarily have to be drawn out in such a process, while the cotton wool could be indefinitely packed together. It would have to be taken hold of, and forcibly stretched as it passed through the pair of rollers, if it were to be drawn out, and not merely compressed. His solution of this problem was a machine that had two pairs of rollers, which were called drawing-rollers, the first pair of which revolved slowly in contact with each other, while the second pair revolved more rapidly in a similar way. One roller of each pair was covered with leather, and the other was fluted lengthwise. The two were pressed together by means of weights. In this manner the adhesion of the cotton wool was safely secured, and there was no chance of the rollers slipping around without drawing it in. The cotton passed through the two pairs of rollers, and its extension depended entirely on the difference in the velocity of the revolutions of the two pairs. When the proper fineness had been obtained in this way, the cotton, as it passed from the second pair of rollers, was twisted into a firm strong thread by spindles attached to the frame.