The Patent Office rejected, on the ground of lack of invention, certain claims in appellants’ application for a patent on improvements in a machine for winding yarn. The District Court likewise found no invention, and dismissed appellants’ bill brought under R.S. § 4915 (35 U.S.C.A. § 63) to obtain the patent.
The disputed claims fall into three groups.
(1) Some claims relate to the casehardening of a cam or cylinder. The application states that the case-hardened cam “offers great resistance to wear and is of improved durability.” The Patent Office examiner pointed out, and it is not disputed, that case-hardening has long been used where a wear-resistant surface is needed. The applicant, in his testimony regarding the unsatisfactory cast-iron cam of the prior art, referred to “deterioration” of the points of the cam and said: “I should not say it is worn. It is a matter of breaking it; of crumbling it. It is caused by the rapid motion of the dog which strikes against the points.” Appellants’ counsel urges that the record contains no evidence that case-hardening was known to prevent breaking, and cites Muller’s patent No. 1,511,764, which states that case-hardening produces brittleness. Since appellants’ application speaks only of reducing “wear,” it evidently uses the word “wear” in a sense broad enough to cover the gradual breaking or “crumbling” of the surface which the applicant sought to prevent; and it seems clear that when the examiner stated, as of common knowledge, that .“case hardening has long been used in all mechanical fields where a wear resisting surface is needed,” he used “wear” in the same sense in which it is used in the application. The applicant himself, when he testified that he adopted a harder metal than cast-iron in order to reduce “breaking” or “crumbling,” immediately added: “Case hardening was a well-known process at that time; it is an ancient thing.” This apparently admits that it was ancient for the purpose of preventing superficial breaking or crumbling.
The applicant discovered that the breaking of a “slider” against the cast-iron cam of the prior art was caused by the crumbling of the points on the cam and not, as had been supposed, by shock sustained when the movement of the slider was reversed. Casehardening the cam remedied this difficulty. Appellants urge that this entitles them, as matter of law, to a patent, and quote this language: “Discovery of a source of trouble not before known and the discovery and application of a remedy are well recognized as invention. Eibel Process Co. v. Paper Co.,
The applicant’s use of case-hardening produced an unexpected result which was not mentioned in the application; it permitted the operation of the machine, even at a greatly increased speed, with little lubrication and no spattering of oil. This result was highly useful. But it was not claimed or disclosed, and it cannot retroactively turn the adoption of case-hardening, for other purposes, into invention. Despite contrary intimations in earlier cases like Diamond Rubber Co. v. Consolidated Rubber Tire Co., 1911,
(2) Some claims relate to making “resilient,” “of cork,” or “of rubber,” certain tires which revolve upon the surface of the cam and' at the same time are required to slide. A previous Abbott patent shows a similar tire of “soft metal.” This substitution, also, seems to have been a marked improvement. The Board of Appeals of the Patent Office said: “The examiner holds and we think properly, the substitution of cork or rubber for soft metal as a suitable friction ring to cooperate with a driving friction roll is not so unobvious as to amount to invention. Appellant claims it is not obvious that such rubber or cork would slide along a cooperating friction roll. In our view this depends entirely upon the character of rubber and cork and with certain types of cork and rubber, it would be obvious.”
(3) Some claims relate to the mounting of a “slider” on a single round rod, and the use of a cover plate to keep it from turning. On this point the Board of Appeals said: .“The examiner points to the patent to Voight in which the slider guide is mounted between parts forming a casing for the cam roller. The slider is not mounted on a round rod but round rods for the support of sliders are old in the art. See patents to Poster and Rhoades. It is our view that to arrange the cover plate as a guide for the slider would be more or less obvious if thought desirable.”
We cannot say that the Patent Office and the trial court were wrong in finding that each of these three groups of claims lacked invention.
Although a court, when it agrees with a Patent Office finding, often says so,
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agreement is not necessary to affirmance and disagreement is not sufficient for reversal. The question for us is not whether in our opinion there was invention, but whether the finding that there was none is consistent with the evidence. “The judicial function is exhausted when there is found to be a rational basis for the conclusions approved by the administrative body.” Mississippi Valley Barge Line Co. v. United States,
The 1927 amendments (44 Stat. 1336) of R.S. § 4915, 35 U.S.C. § 63, 35 U.S.C.A. § 63, do not affect the presumption that the Patent Office is right. General Talking Pictures Corporation v. American Tri-Ergon Corporation, 3 Cir.,
The presumption that the Patent Office is right is reenforced, in the present case, by the presumption that the trial court is right. “Under the rule settled in
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this jurisdiction, while we are not absolutely-bound by a chancellor’s findings of fact, we do not disturb them on appeal unless upon an examination of the evidence they are clearly wrong.” Hazen v. Hawley,
These principles are elaborated in a dissent in Carbide & Carbon Chemicals Corp. v. Coe,
Affirmed.
Notes
Similarly, courts often express agreement with the findings of various administrative bodies, of juries, and of judges, without implying that agreement is necessary to affirmance.
