PALMER v. VILLAGE OF CORNING(1895)
E. H. Risley, for appellant.
Geo. T. Spencer, for appellee.
Mr. Justice WHITE delivered the opinion of the court.
The sole question in this case is whether the appliance to which the plaintiff in errot claims the rights of a patentee under the grant of letters patent No. 134,978, bearing date January 21, 1873, issued to his assignor, involves invention, or is simply a manifestation of mechanical skill.
There is no doubt that in this, as in all similar cases, the letters patent are prima facie evidence that the device was patentable. Sitll, we are always required, with this presumption in mind, to examine the question of invention vel non upon its merits in each particular case. In the present instance the letters patent state the device to be an 'improvement in gratings for sewer inlets,' and describe it as follows: [156 U.S. 342, 343] 'My improvement consists in the employment of a device to elevate the grating above the opening which it covers a short distance, so that it will not become obstructed by small sticks, straws, leaves, and other small rubbish not large enough to clog the sewer or drain with which it may be connected, and at the same time will stop all matter large enough to do injury in said drain.
It thus appears that the whole subject-matter which is covered consists of a grate elevated above the top of the catch basin of a sewer, and resting on a ring or support placed below the top of the basin by means of pins which thus lift up the grating, between which pins are left spaces allowing the water to pass through, under the grating, the result of so elevating the grate being, it is claimed, to keep the openings on the grating proper, and the openings below free from the [156 U.S. 342, 344] debris which would otherwise accumulate thereon or against the same. There is no pretense that the claim covers a grate of any particular style of manufacture or any particular shape. In fact, it is expressly stated that the grate may be made either round or square, and that the pins may be of wrought iron, fitted to holes drilled in the grate or ring, or the grate, rings, and pins for elevating the grate may be cast all in one piece, or wrought-iron pins may be cast into the ring and grate when they are cast. Viewed separately, the elements of this device certainly involve no invention. A grate over a sewer is one of the simplest of mechanical devices. The mere use of a ring of iron on which to rest such a grating is obviously nothing more than a mechanical arrangement, which involves no element of invention; and the same is the case with the use of pins or legs for the purpose of holding up a sewer grate. And it is equally clear that the leaving of open spaces between the pins and the elevating of the grate above the ring, thereby giving greater facility for the flow of water, is invention in no sense of the word. But, although no one of these elements of the contrivance involves invention, it is insisted that, taken all together, they constitute a 'combination,' and that it is this combination which is covered by the letters patent. If a combination of unpatentable elements, as such, produces new and useful results, there can be no doubt that the combination is patentable. But there are certain conditions constituting the essential nature of a combination under the patent law, which we think are not met in this case. The law upon this subject this court has often stated:
Tested by these principles, we think it evident that there is no invention in the device now before us. It is claimed that its effect is to prevent the grate from being clogged. But this effect only comes from raising the grate and leaving openings beneath it. It is an effect produced solely by the openings beneath, and is not in any way due to the presence of the grate above. Thus, even if the appliance operates as claimed, its operation is the result of no combined action, but is due entirely to the openings below. If there were no grate above the pins, but a solid piece of metal or other substance, so that no water could enter the sewer except through the openings left between the pins, the tendency of the flow of the water through those openings would not be affected, and the only result would be to diminish the flow of water into the sewer in a given time by the quantity which would enter above if the place were grated. It seems manifest, indeed, that the only practical operation of this device is to increase the utility of the sewer by elevating the grate, and so rendering it easier for the water to enter. An attempt was made to show by the testimony of aperson who had observed the operation of one of these grates made in a circular form that its use resulted in giving a circular motion to the water, and that the debris was carried to the periphery of the circulating fluid, and thereby prevented from accumulating on the top of the grate. But, if this be true, it is manifestly a result of leaving the open spaces between the pins, and having the grate circular in form. Conceding that the water, just before passing through openings thus arranged, would acquire something of a circular motion, this would not be by any means [156 U.S. 342, 347] the result of any combination between the opening below and the grate above. And, moreover, it cannot be contended that the arrangement of a circular grate supported on pins with the open spaces between them constitutes the invention, for it is expressly stated that the grates may be of any form, round or square.
The judgment below, holding that no invention is involved in this arrangement, is, we think, obviously correct, and it is therefore affirmed.