Mason v. Hepburn

13 App. D.C. 86, 1898 U.S. App. LEXIS 3192
CourtCourt of Appeals for the D.C. Circuit
DecidedJune 7, 1898
DocketNo. 79
StatusPublished
Cited by72 cases

This text of 13 App. D.C. 86 (Mason v. Hepburn) is published on Counsel Stack Legal Research, covering Court of Appeals for the D.C. Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Mason v. Hepburn, 13 App. D.C. 86, 1898 U.S. App. LEXIS 3192 (D.C. Cir. 1898).

Opinion

Mr. Justice Shepard

delivered the opinion of the Court-'

1. This is an appeal from the decision of the Commissioner of Patents in an interference proceeding with the following issue:

“In a magazine-firearm, the detachable end piece for closing the outer end of the magazine provided with upwardly-projecting curved arms to clasp the sides of the barrel, substantially as described.”

The device is a clip made in one piece instead of two, as formerly, one end of which is made to fit closely in the upper end of the magazine. The other is split or divided into two curved arms, which are elastic and clasp each side of the gun-barrel far enough around to hold securely without meeting each other. A side screw at the junction of [88]*88the magazine and barrel holds tight the clasp or releases it, as desired.

Hepburn received a patent for this invention September 11, 1894. Having taken no testimony, his date of invention must be confined to that of his application, filed April 3,1894.

Mason’s application was filed December 31, 1894. Mason offered testimony tending to show that he conceived the invention about June 28, 1887, on which date he made a complete drawing showing the device; that a working drawing was traced from that in July, 1887, and the clip made in the shops of the Winchester Repeating Arms Company; that during the same month a new “take-down” shotgun was made with this clip attached, which was tested, probably, in the shooting-gallery. This gun was stored in the model-room of the same company until produced in the course of the trial of this controversy. No clips of the kind were manufactured for any other purpose, and no similar gun was made. No exhibition of the gun and clip was made to the public, and no one saw it besides the inventor and one or two other employees of the Winchester Company.1

It appears that Mason filed an application for a patent for a detachable or “take-down” gun April 4,1892, and the same was issued to him December 6, 1892. In this no mention is made of the device for clipping the upper end of the magazine to the barrel. On the same day, however, he received a patent for a clip for which he applied August lr 1892. This is made with projecting curved arms, as in the device of the controversy, to clasp the gun-barrel; but at the other end it has a hole made to receive the end of a pin on a separate piece that closes the end of the magazine.

2. The testimony is sufficient to warrant the conclusion, in which all of the tribunals of the Patent Office have concurred, that Mason conceived the idea of this invention at the time claimed, and that the gun, with the device attached, was actually completed and ready for use in July,. [89]*891887. They have not agreed, however, in respect of the sufficiency of the evidence to show with the required certainty that the gun, when constructed, was ■ actually tested by firing in a manner that demonstrated the completeness- and practical utility of the device of the controversy.

What is successful construction—that is to say, the embodiment of the inventor’s conception in a substantial form, which demonstrates at once its practical utility, constituting reduction to practice or use in the sense of the patent law —is a matter the determination of which must largely depend upon the nature and purpose of the machine or device in the particular case, as well as upon the special circumstances surrounding the alleged construction and use.

It is settled beyond all question, that-a drawing of even-the simplest machine or device, perfect in every detail, and plainly demonstrating the principle, efficacy, and practical utility of the invention, will not constitute reduction to-practice. Nor will the requirements of reduction to practice or use be satisfied by a construction clearly designed and intended as a model and nothing more. They are but evidences of conception, furnishing the foundation of an award of priority when accompanied by proof of subsequent diligence in the matter of actual reduction to practice. Porter v. Louden, 7 App. D. C. 64, 74. At the same time some devices are so simple, and their purpose and efficacy so obvious, that the complete construction of one of a size and form intended for and capable of practical use might well be regarded as a sufficient reduction to practice, without actual use or test in an effort to demonstrate their complete success- or probable commercial value. This doctrine is maintained in the following cases: Stitt v. Eastern RR. Co., 22 Fed. R. 649; Sayles v. C. & N. W. RR. Co., 4 Fish. 584; Parker v. Ferguson, 1 Blatchf. 407; Pitts v. Wemple, 2 Fish. 10, 15.

In such instances, however, the fact that the construction of the device had not been followed within a reasonable-time by practical or commercial use or application for [90]*90patent, would afford a strong inference that what had been done was regarded by the inventor as experimental only and not completion of invention, and this would be materially reinforced if in the meantime the machine had been dismantled or destroyed. It appears in this case that the Winchester Repeating Arms Company, which is the assignee of Mason, did not make or use another of these clips. The gun was laid away, and no application for a patent was made until three months after the patent to Hepburn had issued. Five years after its completion, a patent for the detachable gun, or one nearly resembling it, was applied for without mention of the clip as a part of the combination, and then, some months later still, a patent was applied for and obtained for a clip working in the same general way, but made in two pieces.

Two of the board of examiners-in-chief agreed- on reversing the decision of the examiner of interferences, because they were not satisfied with the evidence of reduction to practice. They said :

“The clip evidently performs its expected office. Whether in use with no other means for holding it to the barrel and magazine than the clips and the sockets, the construction is adapted to practical use, has not been proven, and can not be decided by us on a mere inspection of the gun. It has not been certainly established that this clip was ever proven to be perfected and adapted to practical use.”

In reaching this conclusion they laid much stress upon the subsequent inaction of the inventor, and from their point of view rightly so.

In reaching our own conclusion, we regard the examination of the evidence in respect of the actual firing test of the gun as immaterial, because, in our opinion, the reduction to practice of the clip was accomplished by its perfect construction and attachment to a gun apparently completely finished and ready for sale and use. It was demonstrably capable of producing the result sought to be accomplished— [91]*91namely, that of closing the magazine and clipping it to the barrel. As admitted by the examiners, “ the clip evidently performs its expected office.”

Actual test of the restraining power under the strain of repeated firing of the gun might be of importance in demonstrating the value of the clip, but was not necessary to the completion of the inventive act. Hall v. Macneale, 107 U. S. 90, 97.

3.

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Bluebook (online)
13 App. D.C. 86, 1898 U.S. App. LEXIS 3192, Counsel Stack Legal Research, https://law.counselstack.com/opinion/mason-v-hepburn-cadc-1898.