Statement of the case. CASE V. BROWN. A claim for a combination of several devices, so combined together as to produce a particular result, is not good as a claim for " any mode of combining those devices which would produce that result," and can only be sustained as a valid claim for the peculiar combination of devices invented and described. Burr v. Duryee, 1 Wallace, 553, affirmed and applied. AMONG the inventions of our country that have assumed great value-especially in the regions of the West, where Indian corn is largely produced-are those known as CORNPLANTERS. The machine consists of a mechanism resembling somewhat, in external appearance, and in section view, a high plough on wheels. It is drawn by a horse, while a man walks behind and manages it. The object is to plant corn at spots, which spots shall be both equidistant and in rows. The corn to be planted is placed in a hopper or sort of box, which is fixed in the body of the machine; and, at proper intervals, as the machine is drawn by the horse, the grains are permitted to enter and fall through a valve, at the base of a short vertical spout, to the ground, another valve being at the top of the spout. If the grains were permitted to fall through the full length of the spout as the machine passed on, by a valve at the top only of the spout, they would not reach the ground exactly under the place at which the valve was opened; inasmuch as in the interval of time that the grain was descending through the spout, the machine would have passed over a certain space of ground in being drawn along by the horse. But, by employing two valves, one opening into the upper end of the spout from the hopper, and one at the bottom of the spout in close proximity with the ground, correct dropping is insured; the forward motion. of the machine being compensated for by the double valves. A certain Jarvis Case had invented one of these cornplanters, and took a patent for it in January, 1845. In this patent he limited his claim to the particular combination of parts which constituted his machine. In November, 1858, Statement of the case. he surrendered his patent and obtained a reissue with a more expanded claim. That claim was thus: “I claim, in combination with a corn-planting machine that is constantly moved over the ground, and drops the grain intermittently, the so combining of two slides, one of which is at or near the seed-hopper, and the other at or near the ground, or their equivalents, with a lever, as that the operator or attendant on the machine can open said slides at the proper time to deposit the seed and prepare a new charge by the double dropping herein specified." The cut below shows in section the combination or arrangement. A is the hopper which carries the corn, B the seed-slide or valve leading from the hopper to the seed-tube E, C is the seed-cup in the seed-slide, D is the cut-off in the hopper, E is the seed-tube, F is the slide or valve to seed-tube, G is the hand lever by which the tubes are opened and closed in the plaintiff's machine, H the recoil-spring by which the slide-valves B and the valve F are simultaneously closed when the hand is removed from lever G.* * This recoil-spring, H, relieved the operator from replacing or pushing back the lever with his extended arm; a matter which, when to be performed many hundred times a day, makes a large demand on muscular strength. With the recoil-spring, one muscular effort did the work of two. Statement of the case. In this machine of Case's a lever G, of a peculiar form, was used, which, by being pressed down, effected two operations, viz.: it carried the charge of grain out of the seedbox, and dropped it into the tube E, and it raised the slide F to let out the previously dropped charge. Thus the same operation that planted one charge put the next succeeding charge in close proximity to the ground, so that it had but a few inches to fall when the valve or slide F was opened. About the same time that Case originally invented his machine, a person named Brown invented one also, and got a patent in May, 1855. The parties were independent inventors. In its essential features, Brown's machine differed from Case's in not employing a lever having a weight or a spring or automatic device to return it to its position and close the valves, although the same final result, namely, the simultaneous double dropping of the seed was accomplished by one motion of the hand of the operator in both cases. The cut below will exhibit the combination and arrangement in this second invention. A E A here represents the hopper carrying the grain, B the slide-valve, and C the seed-cup between the hopper and the seed-tube E, and F the slide-valve which permits the seed to pass from the lower end of the seed-tube to the ground. Statement of the case. G is the lever. When the upper end of this lever G is moved from the position shown in the drawing towards the hopper A, it is evident that the grain-cup C would be carried over and discharged into the tube E, and the same movement of the lever G would move the slide-valve F so as to permit the grain which it retained at its lower extremity to fall to the ground. Each movement of the lever, with this double seed-tube, whether forward or back, produced a "drop." Thus a similar double dropping of grain was accomplished in this machine of Brown as was accomplished in the machine of Case; but there was no spring or automatic recoil arrangement attached to the lever G, for restoring it to its former position, as it is on the plaintiff's machine. It required to be worked by hand in both directions. Case now sued Brown, in the Circuit Court of the Northern District of Illinois, for infringing his reissued patent. The action was case. On this trial his counsel requested the court to charge the jury "That the plaintiff, in and by his patent, claims any mode of combining a valve in the seed-tube, and a valve in the seedhopper, or their equivalents, with a lever, as that the operator may by one operation, or the application of one muscular force, carry a charge of corn from the seed-hopper into the seed-tube, and arrest it at the lower valve, and by the same operation or muscular force, let out from the lower valve and drop into the furrow a charge of corn, previously dropped and lying at the lower valve. "That the plaintiff by his patent is not confined to the peculiar means of returning the seed-slide which he has adopted in his said model. That his claim covers any arrangement to operate the valves and lever which will produce the result, although he may not in the other machine employ the rock shaft and weighted lever, or any automatic element. He may employ some substitute for the automatic element, so that he by one ope ration, or the application of a single muscular force applied to the lever, drops from the lower valve, and supplies a new charge to take its place, by the same operation or muscular force so as aforesaid applied to the lever, combined with the valve at the seed. tube and the valve at the seed-hopper, or their equivalents." Statement of the case. [As bearing on the interpretation asked for by defendant and adopted by the court below, it is to be noted, that on the question of the prior state of the art to the plaintiff's invention, the defendant proved at the trial that a seedplanting machine had been invented and used to a limited extent, and a description thereof filed in the patent office, as early as 1852, by one Charles Finn, in which was combined the two slides and lever, for accomplishing the same final result as in the plaintiff's machine. A sectional drawing of Finn's machine is given below, in which the corresponding letters are used as in the other two plates. A E A, being the hopper, B the slide-valve, C the seed-cup, E the seed-tube, F the slide-valve, and G the lever, this arrangement agreed with the plaintiff's arrangement in nearly every respect in which the defendant's machine did, and differed from the plaintiff's in having no automatic recoil attachment to the lever, such as a weight or spring.] The court below refused to charge as requested by the plaintiff, but charged in substance that the thing patented to him, was a technical combination consisting of certain elements, and that to constitute an infringement, all these elements must be used by the defendant; that among these, is that particular kind of lever G, described by the patentee, |