Myles Standish Mfg. Co. v. Champion Spark Plug Co.

282 F. 961, 1922 U.S. App. LEXIS 2724
CourtCourt of Appeals for the Eighth Circuit
DecidedMay 15, 1922
DocketNos. 5811, 5851
StatusPublished
Cited by9 cases

This text of 282 F. 961 (Myles Standish Mfg. Co. v. Champion Spark Plug Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Eighth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Myles Standish Mfg. Co. v. Champion Spark Plug Co., 282 F. 961, 1922 U.S. App. LEXIS 2724 (8th Cir. 1922).

Opinion

STONE, Circuit Judge.

The Champion Spark Plug Company brought its complaint against the Myles Standish Manufacturing Company upon two counts. The first cause of action, as tried, was for' infringement of claims 1, 3, and 6 of Stranahan, No. 1,180,799 (April 25, 1916), covering spark plugs for internal combustion engines. The second count was for unfair competition in the sale of certain spark plugs and spark plug cores.

The defenses to infringement were invalidity of the patent, because of anticipation and of lack of novelty, and noninfringement. The unfair competition -was denied. The court entered an interlocutory decree which sustained the three claims of the patent, found infringement and unfair competition, enjoined both, and ordered an accounting to ascertain profits and damages for infringement and damages for the unfair competition. The Standish Company has appealed (No. 5811) from this entire decree, and the Champion Company has cross-appealed (No. 5851) from that portion of tire decree allowing an accounting in respect to unfair competition only for damages, and not for profits, as well.

[963]*963Standish Company Appeal.

This appeal embodies the sustaining of the patent and the infringe-’ ment thereof as to the first count, and the finding of unfair competition as to the second count.

The patent, here involved, covers certain features of spark plugs. The power in gasoline engines is obtained through explosions, within cylinders, of gasoline gas under compression. The explosion is caused by an electric spark, which is produced within the cylinder gas chamber. This spark is obtained through a device called a spark plug which screws into the cylinder case, and extends the firing end into the gas chamber. The electric current is conducted through an electrode, located in the plug and surrounded by insulating porcelain or mica. This electrode with its insulation is called the “core.” This core fits into a metal “shell” which holds the core tightly in proper position. In some plugs the core is solidly built into the shell and is not removable. However, in a large class of plugs the core is readily removable. In the removable type the general method of holding the core in place is as follows: The shell is composed of two parts which screw together holding the core firmly between them. The inner end of the electrode is exposed and located at such distance from an electrode on the shell so that the passage of the current through the core electrode causes a spark across this gap and thus explodes the gas.

The problems of every character of spark plug are two: To keep the current-carrying electrode perfectly insulated, and to keep the firing points properly spaced to secure the most perfect spark. Where the spark plug has a removable core there is the additional problem of making the junction points of core and shell gas-tight. There are other, less important, construction problems, but those just enumerated are vital to the efficiency of a spark plug. The universal method of securing the gas-tight juncture is by the use of gaskets at one or both of the two contact points between the core and shell. The problem of fire-point spacing is concerned with the proper centering in the plug of the core electrode.' This is largely accomplished through the corresponding shapes of the core and the shell within which it fits.

Spark plugs, with removable cores, were not new when Stranahan entered the art. His patent was directed to improvements therein. The objects which he expected to accomplish by his patent were, as stated in the application, the “provision of improved means for firmly and closely holding the porcelain within the shell without injury to the porcelain, and for preventing the escape of gases around the porcelain,” and to provide a gasket “provided with means for insuring a perfect centering and seating” of the core.

The claims here involved are 1, 3, and 6. Claim 1 is for a combination with a core and shell—

“having co-operating shoulders and being relatively spaced one from the other, of a gasket having an annular transversely projecting seat portion for coaction with said shoulder and having end portions projected in opposite directions substantially lengthwise of the gasket axis from the inner and [964]*964outer edges of said seat portion, with one end portion fitting the core and the other end portion fitting the shell bore.”

Claim 3 is for a combination with core and shell—

“of a gasket having one end portion in centering contact with the shell and its other end portion in centering contact with the porcelain and haying a portion intermediate said end portions which is gripped between respective portions of the shell and porcelain.”

Claim 6 is for a combination with core and shell—

“of a gasket having one edge portion restricted with respect to the shell and in centering engagement with the porcelain, and its other edge portion enlarged relative to the porcelain and in centering engagement with the shell and having an intermediate part gripped between the shell and porcelain.”

A study of these claims impresses the conclusion that the element relied upon'by Stranahan to attain his avowed objects was the flanged form of gasket having a centering effect. This view is confirmed by the statement in his application that:

“The provision on each gasket, or either of them, of a flange, which projects from an edge thereof lengthwise of the shell, is a most important feature in connection with the seating and maintaining of a gasket in true centered relation with respect to the shell and porcelain and thereby preventing a porcelain from being secured in lop-sided position within the shell or with its axis out of true parallelism with the axis of the shell, in which lop-sided position the porcelain may have contact with the metal of the shell. It is found in practice that a tighter and more perfect joint is not only provided! between the seating parts of a spark plug by maintaining a gasket in centered position therein, but • also that the air space between the shell and porcelain is maintained entirely there around so that the porcelain is not liable to be injured by having contact with the metal of the shell. It will be noted that the adjacent flanges of the gaskets 121 and 18 fit against the wall of the shell opening, thereby maintaining the gaskets in true centered relation to the shell.”

This is confirmed by the file wrapper. All of the claims of the patent, as originally applied for, were rejected. Regarding original claims 3 and 4 the Examiner said:

“There would be no invention to have a flange on the packing in view of Benoist, 898,427, September 15, 1908.”

The rejection of claims 5, 6, and 7 was on the ground that they—

“do not bring out that the flanges fit the bore of the bushing. Therefore their utility as centering means is not properly defined. The claim is answered by Hosier, in view of Benoist.”

In submitting the first amendment of the claims, the applicant differentiates the references cited by the Examiner on the ground that:

“It is not found in any of the reference patents that the gaskets have the centering action with respect to the shell and porcelain that is the case with applicant’s gaskets.”

Applicant also there says:

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282 F. 961, 1922 U.S. App. LEXIS 2724, Counsel Stack Legal Research, https://law.counselstack.com/opinion/myles-standish-mfg-co-v-champion-spark-plug-co-ca8-1922.