9 F. 500 | U.S. Circuit Court for the District of Southern New York | 1881
The plaintiff has title to letters patent No. 42,920, dated May 24,1864, and issued to James Knibbs, assignor, for an improvement in steam fire-engine pumps, whereby such an engine, having constant power for discharging several streams of water through lines of hose of various lengths, may be made to throw fewer streams, or the same number through longer lines when the resistance to discharge would be greater, without varying the power, or causing undue strain upon the working parts or hose, by means of a passage from the discharge to the suction side of the pump, regulated by a valve, for the surplus water on the discharge side caused by the restriction upon the discharge. This suit is brought for an infringement of this patent, which is not denied, if the patent is valid. The validity of the patent is questioned upon the ground that Knibbs was not the first inventor of this improvement; that the same had been patented abroad prior to his invention; and that the same had been
The second claim of the patent, and the only one in controversy, is for the connecting passage and valve for the purposes described and set forth, the principal of which purposes was the use in that combination. The statutes providing for defences to suits upon patents require defendants to set forth the names and residences of persons having prior knowledge of the thing patented, and where and b.y whom it had been used. Rev. St. § 4920. The proof must,-of course, correspond with and support these allegations. The proofs in this case do not support the allegation that the persons knowing of and using the Amoskeag engines and the engine Philadelphia, as these persons are found to have known and used them, knew of and used Knibbs’ invention. Those connected with the Amoskeag engines used the passage to avoid the pump, and those connected with the Philadelphia used only a part of it at a time, and then in connection only with contrivances for feeding the boiler, and neither of them used it in connection and combination with the working pump and over-pressed hose at all; and they respectively had knowledge coextensive with the use they made. They had brought together all the parts necessary to accomplish the result he accomplished, but did not know how to use them. This is not the known use required to defeat a patent. Tilghman v. Proctor, 102 U. S. 707.
Wilder’s patent is for a two-way valve in combination with apparatus for feeding a steam-boiler with water, by which surplus water is returned to the tank. The combination with which it is made to work is entirely different from that in which this passage and valve are placed, and the working parts are not the same. The same may be said of the patents of Bramah and Duportail. Both were before steam-fire engines, with the necessities of their great and constant motive power, were known.
The facts in regard to use and sale of the invention prior to the application appear, from the evidence, to be that Knibbs was the
It is contended that these uses and sales, either those with or those without the consent and allowance of Knibbs, will defeat the patent. This invention, like that in Elizabeth v. Pavement Co. 97 U. S. 126, could not well be experimented with and tested in private. Its object was connected with purposes in their nature public, and its practice was necessarily somewhat of the same nature. The invention w'as not essentially varied by the trials and use made, and was patented according to its features as first applied. Still, it was, not clear to the inventor that no changes or modifications would be necessary, and necessary to be specified in the application for a patent, in order to obtain the full benefit of one. In this view the use by him as engineer, and by the city of Troy at his request, is deemed to have been experimental and allowable within the rule laid down in the case
In view of these differences of opinion or statement, it may be well to reepr to the statutes. In section 7 of the act of 1836 it is provided that the commissioner shall make, or cause to be made, an examination of the alleged invention or discovery, and if it shall not appear, among other things, that it had been in public use or on sale with the applicant’s consent or allowance prior to the application, and if the commissioners shall deem it to be sufficiently useful and important, it shall be his duty to issue a patent for it. In section 15 of the same act it is provided that a defendant in a suit for infringement may set up, among other things, in defence, that the invention had been in public use or on sale, with the consent and allowance of the patentee, before his application for a patent. These are the only provisions for preventing the' issue of a patent, or a recovery for the infringement of one, on account of the invention being in public use or on sale, except some provisions as to the effect of foreign patents, not material to this question, which were in force when this patent was granted. The. act of 1839 does not provide for preventing the issue of a patent on this account, and does not enlarge in any direction, "but is restrictive of this defence. It saves to manufacturers and purchasers before the application for a patent the right to specific machines, manufactures, or compositions of matter, and provides that no' patent shall be held invalid by reason of the sales, purchases, or use, except on proof of abandonment, or that the purchase, sale, or use has been for more than two years prior to the application. No purchase, sale, or use, after the invention, would prevent or invalidate a patent but for these provisions of the act of 1836, and it is against those provisions that the effect of the making, use, and sales of these specific articles is saved by the act of 183,9. The use saved against is the public use mentioned in the act of 1836, as seems to have always been understood, although it is not mentioned as public in the act of 1839; and the being in use and on sale saved against are the public use and sale with the consent or allowance of the inventor mentioned in the act of 1836. Draper v. Wattles, 16 O. G. 639.