SEAMAN, Circuit Judge
(after stating the facts as above). These appeals are several, brought from a final decree in one suit and an injunctional order in another suit, successively instituted by the complainants, Van Auken and Consolidated Engineering Company, against the defendant, the Monash-Younker Company, for alleged several infringements of a single patent, No. 828,153, issued to Van Auken August 7, 1906. The bill first filed, involving an alleged infringement by the defendant’s so-called “Boegen valve,” was dismissed on final hearing of the issues, and the complainants’ appeal from such decree is designated as No. 1,818. Therein the opinion of the trial court —reported 187 Fed. 141, conjointly with another bill for infringement not involved in the appeal — overrules the defense interposed of anticipation by prior patents, but sustains the defenses of limitation of the scope of the claims and of noninfringement thereunder. In the subsequent suit, how-ever, the alleged infringement was another device adopted by the defendant, called the “Eeuthesser valve,” and upon hearing of a motion to enjoin the use thereof, pendente lite, [128]*128an ínjunctional order was granted- — no opinion being filed — and the defendant appeals therefrom in No. 1,810.
For convenience both appeals were submitted and heard together —with the testimony in both suits embraced in one record (No. 1,810), but stipulated as applicable to either — and they are so treated in this opinion. Thus the defenses set up and urged under the primal bill (in appeal No. 1,818), both (1) of anticipation by prior patents and publications and (2) of limitation of the scope of invention and claims by the prior -art, are made applicable to the second bill and order appealed from (in No. 1,810), so that these issues are involved alike in both appeals, leaving only the issue of infringement under each bill to be considered separately. .
The Van Auken patent in suit (No. 828,153) was granted under an application filed August 1, 1903, for “improvements in valves for radiators,” and both usefulness and popularity of the device and substantial improvement therein over the pre-existing valves or traps for analogous purpose are established facts under the evidence. It discloses a compact device of the well-known float-yalve type, adapted for use in a vacuum system of steam-heating. As aptly stated in the brief for complainants, it is provided with means, when attached to the radiator, to “continuously and automatically carry away the air” and “automatically and intermittently carry away the water of condensation, while at the same time forming such a barrier between the outlet pipe and the radiator” that “waste of steam” is prevented. “Placed on the discharge of the radiator” and connected “with the return line in the vacuum system,” it “automatically separates the air and the water of condensation from the' steam and discharges the former while retaining the latter.”
Invalidity of the patent is asserted upon two grounds — (a) for “complete anticipation” by prior patents and (b) for want of “proper mechanical combinations” — but we believe these contentions of the defendant are without merit and that neither requires discussion, aside from this remark: That the prior patents relied upon (British and American) are specifically mentioned in the opinion of the trial court, above referred to, and that we concur in the ruling thereof in so far as it upholds the validity of Van Auken’s patent.
The issue of infringement presented under each appeal hinges upon interpretation of the patent claims in suit, respectively, with the scope of invention therein, under limitations imposed by the prior art, as the controlling inquiry. -In support of each charge of infringement, it is contended on behalf of the complainants that Van Auken discovered and disclosed in the patent “a new principle for discharging air and water of condensation” from such heating systems, “striking-out in an entirely new direction” from the old devices and “by the use of his new principle of operation” he disclosed “certain fundamental ideas in valve construction,” and is well entitled to claim pioneer invention in that art. This contention, if tenable in the light of the prior art, would leave no escape from infringement by both of the devices adopted by the defendant. It is predicated, however, on the provision in the patent of a so-called “liquid seal” in the con[129]*129duit from the radiator “to increase differential pressure and force the water up into the float-chamber” of the valve, and likewise discharge the expelled air “through the seal,” alleged to be a departure from the entire prior art and contrary to “all its teachings”; in other words, that it was the patentee’s discovery, “that air could be made to pass through a liquid seal by a differential pressure.” So, if like use and function of this means is plainly disclosed in one or more prior valve devices, the patent claims must be limited accordingly, and the. broad interpretation sought on the part of the complainants, through its alleged discovery by the patentee, is unauthorized. With the inquiry thus narrowed, we believe the evidence to be sufficient for its solution, without entering upon the other questions discussed in the briefs, whether disclosures of the prior art, in steam traps and plumbing devices, would not bar such broad definition of the invention.
'Various prior patents, British and American, are in evidence and exhaustively discussed in the expert testimony and in the arguments of counsel, directed primarily to the issue of anticipation, but offered and discussed as well for proof of the prior art involved in the present inquiry. Four of these prior art references are deemed sufficient for mention in our opinion, namely: British patents, (a) No. 941, issued to Vickerman in 1860, and (b) No. 11,741, issued to Donnelly in 1900; United States patents, (c) No. 302,622, issued to Coffee in 1884, and (d) No. 673,250, issued to Ford, April 30, 1901. For interpretation of each of these patents, their disclosures of various means and functions are in dispute between the parties, and the evidence in respect of the devices of Vickerman, Coffee, and Ford is not satisfactory for complete understanding of all their co-operating means; but we are satisfied that the means and function of a liquid seal ar(e disclosed therein, for passing at the inlet (automatically) both water and air, through differential pressure. The Donnelly patent, however, discloses completely, as we believe, both means and function of the liquid seal of the Van Auken patent, in so far as concerns the present inquiry, and if Donnelly’s disclosure anticipates therein the Van Au-ken invention, in the sense of the patent law, it becomes immaterial whether the other references are anticipations in any measure.
Donnelly’s British patent (No. 11,741) was granted in 1900, so that it was “more than two years prior to” Van Auken’s application for his patent, August 1, 1903. It is contended on the part of the complainants that the actual date of Van Auken’s invention is established by his undisputed testimony as November 16, 1896, and that he is thus entitled to priority over subsequent patents and publications. This view of the date of invention appears to be adopted in the opinion below, which states that “the invention of Van Auken, embodied in both patents, was made in 1896,” and “disclosed by Van Auken to Canfield, July 15, 1901” — the other patent referred to being No.
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SEAMAN, Circuit Judge
(after stating the facts as above). These appeals are several, brought from a final decree in one suit and an injunctional order in another suit, successively instituted by the complainants, Van Auken and Consolidated Engineering Company, against the defendant, the Monash-Younker Company, for alleged several infringements of a single patent, No. 828,153, issued to Van Auken August 7, 1906. The bill first filed, involving an alleged infringement by the defendant’s so-called “Boegen valve,” was dismissed on final hearing of the issues, and the complainants’ appeal from such decree is designated as No. 1,818. Therein the opinion of the trial court —reported 187 Fed. 141, conjointly with another bill for infringement not involved in the appeal — overrules the defense interposed of anticipation by prior patents, but sustains the defenses of limitation of the scope of the claims and of noninfringement thereunder. In the subsequent suit, how-ever, the alleged infringement was another device adopted by the defendant, called the “Eeuthesser valve,” and upon hearing of a motion to enjoin the use thereof, pendente lite, [128]*128an ínjunctional order was granted- — no opinion being filed — and the defendant appeals therefrom in No. 1,810.
For convenience both appeals were submitted and heard together —with the testimony in both suits embraced in one record (No. 1,810), but stipulated as applicable to either — and they are so treated in this opinion. Thus the defenses set up and urged under the primal bill (in appeal No. 1,818), both (1) of anticipation by prior patents and publications and (2) of limitation of the scope of invention and claims by the prior -art, are made applicable to the second bill and order appealed from (in No. 1,810), so that these issues are involved alike in both appeals, leaving only the issue of infringement under each bill to be considered separately. .
The Van Auken patent in suit (No. 828,153) was granted under an application filed August 1, 1903, for “improvements in valves for radiators,” and both usefulness and popularity of the device and substantial improvement therein over the pre-existing valves or traps for analogous purpose are established facts under the evidence. It discloses a compact device of the well-known float-yalve type, adapted for use in a vacuum system of steam-heating. As aptly stated in the brief for complainants, it is provided with means, when attached to the radiator, to “continuously and automatically carry away the air” and “automatically and intermittently carry away the water of condensation, while at the same time forming such a barrier between the outlet pipe and the radiator” that “waste of steam” is prevented. “Placed on the discharge of the radiator” and connected “with the return line in the vacuum system,” it “automatically separates the air and the water of condensation from the' steam and discharges the former while retaining the latter.”
Invalidity of the patent is asserted upon two grounds — (a) for “complete anticipation” by prior patents and (b) for want of “proper mechanical combinations” — but we believe these contentions of the defendant are without merit and that neither requires discussion, aside from this remark: That the prior patents relied upon (British and American) are specifically mentioned in the opinion of the trial court, above referred to, and that we concur in the ruling thereof in so far as it upholds the validity of Van Auken’s patent.
The issue of infringement presented under each appeal hinges upon interpretation of the patent claims in suit, respectively, with the scope of invention therein, under limitations imposed by the prior art, as the controlling inquiry. -In support of each charge of infringement, it is contended on behalf of the complainants that Van Auken discovered and disclosed in the patent “a new principle for discharging air and water of condensation” from such heating systems, “striking-out in an entirely new direction” from the old devices and “by the use of his new principle of operation” he disclosed “certain fundamental ideas in valve construction,” and is well entitled to claim pioneer invention in that art. This contention, if tenable in the light of the prior art, would leave no escape from infringement by both of the devices adopted by the defendant. It is predicated, however, on the provision in the patent of a so-called “liquid seal” in the con[129]*129duit from the radiator “to increase differential pressure and force the water up into the float-chamber” of the valve, and likewise discharge the expelled air “through the seal,” alleged to be a departure from the entire prior art and contrary to “all its teachings”; in other words, that it was the patentee’s discovery, “that air could be made to pass through a liquid seal by a differential pressure.” So, if like use and function of this means is plainly disclosed in one or more prior valve devices, the patent claims must be limited accordingly, and the. broad interpretation sought on the part of the complainants, through its alleged discovery by the patentee, is unauthorized. With the inquiry thus narrowed, we believe the evidence to be sufficient for its solution, without entering upon the other questions discussed in the briefs, whether disclosures of the prior art, in steam traps and plumbing devices, would not bar such broad definition of the invention.
'Various prior patents, British and American, are in evidence and exhaustively discussed in the expert testimony and in the arguments of counsel, directed primarily to the issue of anticipation, but offered and discussed as well for proof of the prior art involved in the present inquiry. Four of these prior art references are deemed sufficient for mention in our opinion, namely: British patents, (a) No. 941, issued to Vickerman in 1860, and (b) No. 11,741, issued to Donnelly in 1900; United States patents, (c) No. 302,622, issued to Coffee in 1884, and (d) No. 673,250, issued to Ford, April 30, 1901. For interpretation of each of these patents, their disclosures of various means and functions are in dispute between the parties, and the evidence in respect of the devices of Vickerman, Coffee, and Ford is not satisfactory for complete understanding of all their co-operating means; but we are satisfied that the means and function of a liquid seal ar(e disclosed therein, for passing at the inlet (automatically) both water and air, through differential pressure. The Donnelly patent, however, discloses completely, as we believe, both means and function of the liquid seal of the Van Auken patent, in so far as concerns the present inquiry, and if Donnelly’s disclosure anticipates therein the Van Au-ken invention, in the sense of the patent law, it becomes immaterial whether the other references are anticipations in any measure.
Donnelly’s British patent (No. 11,741) was granted in 1900, so that it was “more than two years prior to” Van Auken’s application for his patent, August 1, 1903. It is contended on the part of the complainants that the actual date of Van Auken’s invention is established by his undisputed testimony as November 16, 1896, and that he is thus entitled to priority over subsequent patents and publications. This view of the date of invention appears to be adopted in the opinion below, which states that “the invention of Van Auken, embodied in both patents, was made in 1896,” and “disclosed by Van Auken to Canfield, July 15, 1901” — the other patent referred to being No. 890,-555, issued to Canfield & Van Auken, on their application of March 22, 1902, for another form of radiator-valve containing the so-called “liquid seal.” Also, under interference proceedings in the Patent Office Van Auken was awarded priority over rival applicants for [130]*130analogous devices, but the issues there presented are plainly distinguishable from the present inquiry. The only invention here involved is that of the patent combination in suit, so that the question of priority hinges on the date of such invention; and neither fact nor date of the alleged Van Auken concept of the liquid seal, as a means to discharge both air and water from the radiator, can serve to broaden the scope of invention in this patent, unless it originated therein as part of the invention. In view, therefore, of its earlier' embodiment in the Canfield & Van Auken application, we are not satisfied that the testimony carries back the invention of Van Auken’s patent in suit to 1896, or any specific date prior to his application for a patent. Whatever may be its actual date, however, we are of opinion that the statutory amendment of 1897 (Act March 3, 1897, 29 Stat. c. 391, p. 692; sections 4886 and 4920, 3 U. S. Comp. Stat. 1901, pp. 3382, 3394) is applicable thereto, and that the invention cannot be carried back “more than two years prior to his' application.” Thus the Donnelly patent (pleaded in the answer as an anticipation) is prior in legal effect and pertinent as a disclosure of the prior art.
The Donnelly device exhibits a valve for attachment to the discharge end of the radiator, “adapted to automatically control the discharge of air and water of condensation from the” radiator, illustrated in Fig. 7 of the drawings as follows:
It describes and shows means for a water seal in the conduit from the radiator, substantially like that of Van Auken, whereby the air and water discharged from the radiator “pass through the seal by differential pressure,” the water entering a float-chamber and operating the float, as in Van Auken’s valve, except that the water enters below the float, instead of “above the line of flotation of said float” as specified in Van Auken’s patent. They are not alike in means and arrangement for expelling water and air from the valve, and the Donnelly device differs substantially in its additional motor provision of a flexible diaphragm, with which the float co-operates to close the vent and the resulting suction “allows all the water to discharge into the return pipe.” These differences do not require analysis for the purposes if this inquiry, as we believe the above-mentioned disclosure of the water seal and its function, co-operating with the float and other means, clearly anticipates the like provision for a water seal in Van Auken’s device, leaving no room for its interpretation as Van Auken’s discovery.
[131]*131The further contentions of the complainants in support of broad claims — (1) that Donnelly’s valve was abandoned as worthless after trial in this country, and (2) that the rulings of the Patent Office, in the course of the above-mentioned interference proceedings, interpret the claims broadly — do not require extended discussion. In respect of the Donnelly valve, it appears that the Warren Webster Company used them for some time, hut the diaphragms became crystallized in use and many of the valves were taken out for that reason, that they then made a valve of like structure, omitting the diaphragm feature, with adaptations for use of the float, and have used it with entire success, although they have taken license therefor under Van Auken; and this testimony furnishes strong evidence of utility in such provisions of Donnelly applicable to the issue. The rulings referred to of the Patent Office, not only related to a different issue, but are without force in any view for solution of the inquiry into the Donnelly disclosure.
We are of opinion, therefore, that the scope of invention in Van Auken’s patent is limited by the above-mentioned prior disclosures, and that the claims are not generic, but must be limited to the particular means in combination specified in the patent and drawings.
1. Are the claims thus defined infringed by the defendant’s “Boegen valve,” involved in appeal No. 1,818? In several features its departure from the Van Auken specifications is unmistakable and conceded:
(1) Van Auken’s inlet conduit is carried up between the valve casing and the float-chamber, as described “above the line of flotation,” to discharge the water into the chamber at the top — with various advantages over prior means as pointed out in the specifications and testimony — while the Boegen conduit delivers the water at the bottom of the float-chamber, as shown in the above-mentioned earlier devices of Donnelly and Canfield & Van Auken. Thus Van Auken’s improvement (as described) in this particular is not adopted by the defendant.
(2) This difference results in another distinction in their water seals. As stated by complainants’ expert, the Van Auken seal “is formed entirely in the 'conduit and by only a small quantity of water and this seal is entirely separate and distinct from the water in the float-chamber; while in the defendant’s device the ‘complete seal’ against the passage of- steam” is not so effected. It is operative only when the float-chamber is partially filled with water, so that the Van Auken “benefit of having the seal entirely undisturbed by the rise and fall of the water in the float-chamber is not present” in the Boee-en valve.
(3) The valves differ substantially in the provision for water discharge, as pointed out in the opinion below, as follows:
“Tan Auken empties the float-chamber as soon as the water gets high enough to buoy up the float, while defendant keeps the water constantly at a point just below the flotation line. Van Auken discharges only the water of condensation by the rising of the float, while defendant discharges water, floatage, and air by k like operation. The working of the device is in this respect sufficiently different from Van Auken’s, and on a sufficiently [132]*132different principle, to avoid infringement, even if the claims as to the conduit are to be given a broad construction, instead of the narrowed one here adopted. Defendant’s water outlet is entirely new, and acconrplislies a somewhat improved result.”
(4) The air discharge passage of Van Auken is outside the float-chamber and independent of the float, while the Boegen valve discharges through the float, with consequent benefits which do not require specification.
We believe noninfringement to be clearly established by these departures from the patent device — in the main adaptations from the prior art — and that the complainants’ bill was rightly dismissed (appeal No. 1,818) on that ground.
2. We are not advised of the distinctions in the Leuthesser valve from the Boegen valve which were found by the court below sufficient to enjoin the former as an infringement, although dismissing the bill charging infringement in use of the Boegen valve; and we have vainly searched throughout the expert testimony and elaborate briefs submitted on behalf of- the complainants for any distinction thereof which would justify affirmance of both rulings. Under the foregoing interpretation of the Van Auken patent and claims, however, we are impressed with no view of the Leuthesser (patented) device, as used by the defendant, upon which infringement can be charged. Its inlet conduit provision is differentiated from Van Auken equally with that of Boegen. "While it is true that the water from the radiator is initially forced upwards in the valve near “the line of flotation,” it is not there discharged into the float-chamber, but is separated therefrom by an annular form of shield for conduit, which conveys the water to the bottom of the float-chamber, where it is discharged thereto through perforations in the shield. It thus serves alike with the Boegen conduit for an inlet delivery at the bottom, and not for Van Auken’s top delivery, although it may be an improvement over either form for the purposes of the float. The outlet provision for discharging the water from the float-chamber is outside that chamber, alike with that of Boegen distinguishable from the Van Auken meáns and method; an'd the air discharge is through the float, as in Boegen’s device, but differently arranged, for which advantages are claimed over either of the other methods.
Accordingly, we are of opinion that the proof fails to establish infringement — irrespective of any presumption arising from the Leuthesser patent “that there was a substantial difference between the inventions” (Kokomo Fence M. Co. v. Kitselman, 189 U. S. 23, 23 Sup. Ct. 527, 47 L. Ed. 689) — and that the bill charging such infringement must be dismissed.
The decree, therefore, appealed from in No. 1,818 is affirmed, and the injunctional order appealed from in No. 1,810 is reversed, with direction to the court below to dismiss the complainants’ bill therein for want of equity.