To prevent his inventions getting abroad to foreigners, Mr. Arkwright purposely omitted to give so full and particular a description of his invention… - Richard Arkwright

The manufacture of yarn being at length full established, the demand for it became too great for the patentees to supply, and then they sold licenses very extensively, so that at least 60,000 l. has been expended in consequence of such grants. Mr. Arkwright and his partners have expended upwards of 30,000/. in buildings and machinery in Derbyshire, and above 4,000 /. in Manchester; and they have lost not less than 5,000 l. or 6.000 l. by injuries from mobs, and from fire. The saving of labour by this machinery is several hundred thousands per annum, and yet trade is so greatly increased, that many more people are employed, and can earn a comfortable maintenance, than were employed before. The same inventions maybe applied with equal advantage to prepare and spin wool.

A trial in Westminster Hall, in July last, at a large expence, was the consequence; when, solely by not describing so fully and accurately the nature of his last complex machines as was strictly by law required, a verdict was found against him. Had he been at all aware of the consequences of such omission, he certainly would have been more careful and circumspect in his description. It cannot be supposed that he meant a fraud on his country: it is on the contrary, most evident that he was anxiously desirous of preserving to his native country the full benefit of his inventions. Yet he cannot but lament, that the advantages resulting from his own exertion and abilities alone, should be wrested from him by those who have no pretension to merit; that they should be permitted to rob him of his inventions before the expiration of the reasonable period of fourteen years, merely because he has unfortunately omitted to point out all the minutiae of his complicated machines. In short, Mr. Arkwright has chosen a subject in manufactures (that of spinning) of all others the most general, the most interesting, and the most difficult. He has, after near twenty years unparalleled diligence and application, by the force of natural genius, and an unbounded invention, (excellencies seldom united) brought to perfection machines on principles as new in theory, as they are regular and perfect in practice. He has induced men of property to engage with him to a large amount; from his important inventions united, he has produced better goods, of their different kinds, than were ever before produced in this country; and finally, he has established a business that already employs upwards of five thousand persons, and a capital, on the whole, of not less than £200,000, a business of the utmost importance and benefit to this kingdom.

Mr. Richard Arkwright, after many years study, brought his spinning machinery to bear about 1768: he was a native of Lancashire; but fearing the same fate as Hargrave, went to Nottingham, and obtained a patent, dated 3 July 1769, for a machinery for making web or yarn of cotton, flax, or wool. He afterwards found it necessary to apply the same principles to the preparation, and took another patent, dated 16 December 1775, for certain machines for preparing silk, cotton, flax and wool for spinning. During five years after the date of his first patent, Mr. Arkwright and his partners expended 12,000 l in machinery and buildings before any profit was made. The last invention was a very important addition to the first; and by combining them, excellent yarn, or twist, was at last produced; but there was still much difficulty in establishing a trade; for the cotton manufacturers would not have the new yarn at any price, and the proprietors were obliged to weave the yarn, into stockings, and into calicoes; but the latter was restricted by the Excise, which rendered relief by an Act of Parliament necessary.