ISS Patc7its. [Ch.X. Sec.II. and he might not have obtained a grant as the inventor of it. We have ah-eady considered that patents for improvements must be taken out accordingly {a). In Hornblower v. Boul- ton (Z>), the patent v^^as obtained " for a method of lessening the consumption of steam and fuel in fire engines." This was effected by improvements of an old machine, and the patent was held good. Grose J. observed, " I consider the patent and specification so connected together as to make a part of each other ; and that to learn what the patent is I may read the specification, and consider it as incorporated in the patent. Whether the patent call the manufacture by its name, or style it an invention, a mode, or method, or in any other manner, it signifies nothing ; for the specification describing the thing as required by the patent must be resorted to, and may fairly be deemed a part of the patent itself." But in a subsequent case, a patent " for an improved mode of lighting cities, towns, and villages," was held not to be supported by a specification describing an improved lamp. The patent should have been obtained "for an improved lamp (c)." And a patent for a
- ' tapering brush" will not support a patent for a brush, differ-
ing from a common brush in no other respect, than in the circumstance that the hair or bristles are purposely made of unequal lengths [d). Nor will a patent " for a new or improved method of drying and preparing malt" be sustained by a spe- cification for heating, &c. ready made malt {e). Particular care should be taken that the specification is acknowledged and lodged in the inrollment office before the expiration of the specified time, as the legislature only can give relief afterwards {/). A proviso that a specification shall be enrolled within one calendar month then next after the date, which is the 10th of May, is satisfied by an inrolment on the 10th of June (g). Fourthly, How a patent is obtained. To obtain a patent, a petition for it must be prepared, to- gether with an affidavit of the inventor in support of the . petition. These are then taken to the office of the Secretary (ff) Ante, 184, (rf) 2 Stark. Rep. 249. {b) 8 T. R. 95. 2 Barnew and Aid. {e) 2 Barnew and Aid. 330. 330. (/) 6 Ves. Jun. 599. (c) 1 Stark. 205. (g> 2 Campb. 294. 7 of
