“Case for an infringement of certain patent rights, granted to the plaintiff. There were two counts on two distinct patents in the declaration, but the first was the only one relied on at the trial, being on a patent for ‘an improvement on the double speeder for roping cotton,’ &c. The cause was tried on the general issue. The patent was dated the 3d of April, 1819, and the specification annexed to it, contained a very minute description of the double speeder as improved by the plaintiff, under distinct articles. In the first article the plaintiff states, ‘the first part of my invention is a new position of the rollers,’ which he then proceeds to describe.”