In re Williford

158 F.2d 997, 34 C.C.P.A. 812, 72 U.S.P.Q. (BNA) 321, 1946 CCPA LEXIS 560
CourtCourt of Customs and Patent Appeals
DecidedDecember 9, 1946
DocketNo. 5214
StatusPublished
Cited by7 cases

This text of 158 F.2d 997 (In re Williford) is published on Counsel Stack Legal Research, covering Court of Customs and Patent Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In re Williford, 158 F.2d 997, 34 C.C.P.A. 812, 72 U.S.P.Q. (BNA) 321, 1946 CCPA LEXIS 560 (ccpa 1946).

Opinion

O’CONNELL, Judge,

delivered the opinion of the court:

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the action of the Primary-Examiner in rejecting claims 24, 25, 26, and 27 in appellant’s application for a patent for “certain new and useful improvements in Accelerated Light Fastness Testing Method and Apparatus.”

Claims 24 and 25, which recite the method, and claims 26 and 27, the apparatus for performing it, were rejected on the ground that they defined no patentable distinction over the disclosure of the art of record. Six claims, 11 to 15, inclusive, and 21, which recite structure, were allowed.

The references relied upon are:

Lorilleux et al. (Br.), 204,587, October 4, 1923.
Buttolph, 1,558,786, October 27, 1925.

Claim 24 is illustrative of the two claims drawn to method—

24. A method of subjecting a sample of material to an accelerated test, such method comprising revolving said sample in a closed path of revolution about a vertical axis and around a concentrated source of radiant energy while continually exposing a surface of said sample to radiant energy from said source and while continually maintaining said sample and such exposed surface thereof vertically curved on a radius of curvature substantially equal to the distance of said exposed surface from the center of said source of radiant energy.

Claim 26 is illustrative of the two claims drawn to apparatus—

26. Apparatus for subjecting a sample of material to an accelerated test,' such apparatus comprising, in combination, a concentrated source of radiant [814]*814energy; a framework rotatable around said source and about a vertical axis extending through said source; and a sample holder secured to said framework and including a plate having an apertuz-ed portion vertically curved on a radius of curvature substantially equal to the distance of said apertured portion from the center of said, course of radiant energy, said holder also including means to clamp a sample of material against said apertured portion, to conform said sample to the vertical curvature thereof and to expose a vertically curved surface of said sample to said source of radiant energy.

Claim 25 adds to claim 24 the limitations that the source of radiant enérgy shall comprise “at least one electric arc between two carbon electrodes” and that only vertically curved surface portions of such vertically curved samples which are above and below a horizontal plane and extending through such arc shall be exposed to its rays.

Claim 27 is dependent on claim 26 and, like claim 25, adds the limitation that the carbon arc light shall be employed. Other limitations are included in claim 27 which relate to the mounting of the lamp and arranging the sample-carrying framework.

Omitting references to the record, the Solicitor for the Patent Office describes the subject matter defined by the claims on appeal—

The application relates to the testing of samples' of material to ascertain the amount of fading thereof due to exposure to light. Appellant’s apparatus consists of a holder for holding the sample, and an electric arc light. In practice a series of holders is supported on a horizontal circular bracket, the arrangement being such that the light is at the center of the circle. Tlie bracket is carried by a framework. No means is disclosed for mounting the framework in relation to the light but appellant’s specification states that the framework is rotated about a vertical axis passing through the light source.
During the prosecution of his application appellant submitted a sketch to show that if a flat sample is exposed to light from a point source which is located opposite the center of the sample, more light will be received at the center of the sample than at the edges-thereof.
* ifc % * * # *
As shown the holder is interposed between the sample and the light, and has two windows which admit light to the portions of the sample which are exposed.

Buttolph discloses an apparatus for subjecting colored articles to the influence of ultra violet rays for the purpose of comparing and predetermining the life of the color under the influence of sunlight or other light. A multi-paneled holding drum is disclosed mounted on a standard and having a fused quartz mercury vapor arc lamp mounted therein as a source of ultra violet light. Openings in the sides of the drum are provided with flatwise surface sample holders with colored fabrics exposed therethrough. “The lamp casing is ro-tatably movable on the standard, * * * the movement in either direction being controlled by stop pin.”

[815]*815The patent to Lorilleux et al. relates to apparatus “which will give quick, accurate and comparable results” in .testing the effect of light on colors or colored fabrics. It comprises a cylindrical casing with an electric arc light arranged within. The material to be tested is placed in grooved frames or sample holders surrounding the openings formed about the middle of the casing at a level lower than the source of light. The surface of the individual sample holders, as depicted in the drawings, are curved horizontally about the axis of the cylinder. The casing is described as supported on rollers and “may be mounted so as to be rotated about the lamp.”

The examiner in rejecting claims 24 and 26 stated, among other things, that .the only distinction defined by such claims over either of the cited references “is the vertical curvature of the sample holders with the light source as the center of curvature, so that the entire area of each sample will receive the same intensity of light.” Such limitation, the examiner'held, presented “no material effect, if any, on the specimen.”

Claim 25 was rejected as unpatentable over Lorilleux et al. for the reasons given in rejecting claims 24 and 26, and for the reason that the reference disclosed a carbon arc lamp. Claim 27 was rejected as unpatentable over Buttolph in view of Lorilleux et al. on the ground that the ordinary skill of a mechanic would be exercised exclusively in substituting the mercury vapor lamp of one for the arc lamp of the other.

The holdings upon which the examiner relied in making his final , decision were discussed and passed upon by the Board of Appeals which made the following pertinent statement regarding its position:

The principal issue presented appears to us to be whether the vertical curvature defined in the appealed claims involves invention over the prior art when, as the Examiner points out, it is a matter of common knowledge that surfaces equidistant from a source of radiant energy will receive the same intensity of energy. This principa? has been so commonly used in many relations that we are unable to find invention in its use in this particular field. The Examiner ventures the opinion that for such short distances as those involved in the testing of dyed samples, for instance, the exactness with which the samples receive the same intensity of light at all points on their surfaces would present no material effect on the specimen.

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Bluebook (online)
158 F.2d 997, 34 C.C.P.A. 812, 72 U.S.P.Q. (BNA) 321, 1946 CCPA LEXIS 560, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-williford-ccpa-1946.