During this time his wife was kept in almost as great anxiety as himself, for she well knew of his trials and difficulties while he was striving to perfect his invention. Many years after they had been successfully overcome, the conversation which took place one eventful evening was vividly remembered. “Well,” said the anxious wife, “will it work?” “No,” was the sad answer; “I have had to take it all to pieces again.” Though he could still speak hopefully and cheerfully, his poor wife could restrain her feelings no longer, but sat down and cried bitterly. She had, however, only a few more weeks to wait, for success long laboured for and richly deserved, came at last, and a proud and happy man was John Heathcoat when he brought home the first narrow strip of bobbin-net made by his machine, and placed it in the hands of his wife. As in the case of nearly all inventions which have proved productive, Heathcoat’s rights as a patentee were disputed, and his claims as an inventor called in question. On the supposed invalidity of the patent, the lace-makers boldly adopted the bobbin-net machine, and set the inventor at defiance. But other patents were taken out for alleged improvements and adaptations; and it was only when these new patentees fell out and went to law with each other that Heathcoat’s rights became established. One lace-manufacturer having brought an action against another for an alleged infringement of his patent, the jury brought in a verdict for the defendant, in which the judge concurred, on the ground that _both_ the machines in question were infringements of Heathcoat’s patent. It was on the occasion of this trial, “Boville v. Moore,” that Sir John Copley (afterwards Lord Lyndhurst), who was retained for the defence in the interest of Mr. Heathcoat, learnt to work the bobbin-net machine in order that he might master the details of the invention. On reading over his brief, he confessed that he did not quite understand the merits of the case; but as it seemed to him to be one of great importance, he offered to go down into the country forthwith and study the machine until he understood it; “and then,” said he, “I will defend you to the best of my ability.” He accordingly put himself into that night’s mail, and went down to Nottingham to get up his case as perhaps counsel never got it up before. Next morning the learned sergeant placed himself in a lace-loom, and he did not leave it until he could deftly make a piece of bobbin-net with his own hands, and thoroughly understood the principle as well as the details of the machine. When the case came on for trial, the learned sergeant was enabled to work the model on the table with such case and skill, and to explain the precise nature of the invention with such felicitous clearness, as to astonish alike judge, jury, and spectators; and the thorough conscientiousness and mastery with which he handled the case had no doubt its influence upon the decision of the court.