"To prevent his inventions getting abroad to foreigners, Mr. Arkwright purposely omitted to give so full and particular a description of his inventions, in the specification of his last patent, as he would otherwise have done, believing, from the concluding clause in the patent, that he need not so fully describe. His patent right being largely infringed, he was obliged to prosecute some infringers, although an association was formed to resist him; but on a trial in the King's Bench in July 1781 a verdict was given against him, on the ground that his specification was not as full and accurate as the law requires. Having established a business that already employs above 5,000 persons, and a capital of not less than 200,000 l. he hopes to be relieved by Parliament, from the consequences of an unintentional error."

“Mr. Arkwright, after many years intense and painful application, invented, about the year 1768, his present method of spinning cotton, but upon very different principles from any invention that had gone before it. He was himself a native of ; but having so recently witnessed the ungenerous treatment of poor Hargrave, by the people of that county, he retired to, and obtained a patent in the year 1769, for making cotton, flax, and wool into yarn. But, after some experience, finding that the common method of preparing the materials for spinning was very imperfect, tedious, and expensive, he turned his thoughts towards the construction of engines for that purpose; and, in the pursuit, spent several years of intense study and labour, and at last produced an invention for carding and preparing the materials, founded in some measure on the principles of his first machine. These inventions, united, completed his great original plan. But his last machines being very complicated, and containing some things materially different in their construction, and some others materially different in their use, from the inventions for which his first patent was obtained, be procured a patent for these also in December, 1775.”

“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.”

“About the year 1767, one Hargrave, of Blackburn, in, constructed an engine that would at once spin twenty or thirty threads of cotton into yarn for the fustian manufacture; but because it was likely to answer in some measure the end proposed, his engines were burnt and destroyed, and himself driven out of Lancashire: he afterwards removed to, and obtained a patent for his engine; but he did not even there long continue in the peaceable possession. His patent right was invaded, and he found it necessary to commence a prosecution; an association was soon formed against him; and, being unable to contend against the united power of a body of men, he was obliged to give up the unjust and unequal contest. His invention was cruelly wrested from him; and he died in obscurity, and great distress.”

“No sooner were the merits of Mr. Arkwright’s inventions fully understood, from the great increase of materials produced in a given time, and the superior quality of the goods manufactured; no sooner was it known, that his assiduity and great mechanical abilities were rewarded with success; than the very men, who had before treated him with contempt and derision, began to devise means to rob him of his inventions, and profit by his ingenuity. Every attempt that cunning could suggest for this purpose was made; by the seduction of his servants and workmen, a knowledge of his machinery and inventions was fully gained. From that time many persons began to pilfer something from him; and then by adding something else of their own, and by calling similar productions and machines by other names, they hoped to screen themselves from punishment. So many of these artful and designing individuals had at length infringed on his patent right, that he found it necessary to prosecute several: but it was not without great difficulty, and considerable expence, that he was able to make any proof against them; conscious that their conduct was unjustifiable, their proceedings were conducted with the utmost caution and secresy. Many of the persons employed by them were sworn to secresy, and their buildings and workshops were kept locked up, or otherwise secured. This necessary proceeding of Mr. Arkwright, occasioned, as in the case of poor Hargrave, an association against him, of the very persons whom he had served and obliged. Formidable, however, as it was, Mr. Arkwright persevered, trusting that he should obtain in the event, that satisfaction which he appeared to be justly entitled to.”

“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 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, 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.”