General Motors Corp. v. Leer Auto Supply Co., Inc.

60 F.2d 902, 15 U.S.P.Q. (BNA) 63, 1932 U.S. App. LEXIS 2638
CourtCourt of Appeals for the Second Circuit
DecidedAugust 5, 1932
DocketNo. 438
StatusPublished
Cited by14 cases

This text of 60 F.2d 902 (General Motors Corp. v. Leer Auto Supply Co., Inc.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Second Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
General Motors Corp. v. Leer Auto Supply Co., Inc., 60 F.2d 902, 15 U.S.P.Q. (BNA) 63, 1932 U.S. App. LEXIS 2638 (2d Cir. 1932).

Opinions

CHASE, Circuit Judge.

The patent in suit is for a bearing shim of hard metal to which is securely anchored a soft metal face. Such a shim may be used in any split bearing, and is especially useful with split bearings using forced feed lubrication, as is now common on the crank shaft of internal combustion engines, because it permits such a close approach of the shim face to the rotating shaft that there is no appreciable avenue left for the escape of the lubricating oil forced into the bearing through holes in the shaft; furthermore, it does not do any damage as would a shim made entirely of hard metal if such a shim were permitted to bear upon the turning shaft.

General Motors is the owner of the patent, and Laminated Shim Company, Inc., the other plaintiff, is the exclusive licensee. The defendant is a dealer within the Southern district of New York in soft metal faced shims manufactured by National Motor Bearing Company, Ine., of Los Angeles, Cal. This manufacturer is defending the suit.

At the opening of the trial, counsel for the plaintiff elected to rely on claims 3 to 8, inclusive. These claims follow:

“3. A combined shim and bearing comprising a substantially U-shaped spacing portion made from a comparatively hard and non-yieldable metal, and' a facing portion made from a comparatively soft bearing metal within which the free ends of said spacing portion are embedded to thereby provide a unitary structure.

“4. A combined shim and bearing comprising a spacing portion made from a comparatively hard and non-yieldable metal and a, facing portion made from a comparatively soft bearing metal, a part of said spacing portion being embedded in said facing portion to thereby permanently connect said portions together, and the unitary structure thus provided having a hole to accommodate a securing bolt.

“5. A combined shim and bearing comprising a spacing portion made up of a plurality of superposed hard and non-yieldable metallic plates, and a facing portion made from a bearing metal and adapted to form a part of a bearing, said parts being permanently joined together, the unitary member thus formed having a hole to receive a securing' bolt.

“Q. A combined shim and bearing comprising a plurality oE superposed U-shaped lamina) made from a hard and substantially non-eompressible metal, and a facing portion made from a bearing metal and with which the free ends of said laminae are permanently connected to thereby form a unitary structure.

“7. A combined shim and bearing comprising a plurality of superposed U-shaped laminae made from a hard and resistant metal, and a facing portion made from a softer and more easily compressible bearing metal and within which the free ends of said lamina? are embedded, to thereby provide a unitary device.

"8. A combined shim and bearing comprising a plurality of superposed U-shaped lamina) of different thicknesses one from another and made from a resistant and substantially non-compressible metal, and a facing portion made from a more easily compressible bearing metal and within which the free ends of said lamina?, are embedded, to thereby provide a unitary article.”

A shim may be of whatever size the particular bearing in which it is used requires. Its primary purpose is to permit the vrear in the bearing to be readily taken up by providing a removable spacer between the halves of the bearing proper, and the lamination of the shim is merely an aid in the take-up process. One or more of the lamina? can be peeled off easily to give a uniform reduction in thick[904]*904-ness over the entire surface of the shim. On split bearings lubricated by the splash system an ■ opening along the shaft where the bearing halves were held apart by the shim was rather desirable as it provided a means for the oil to get in to the face of the shaft turning in the bearing and also seryed somewhat to cool the bearing. With the advent of forced-feed oiling, the oil pressure from within the shaft had a tendency to push oil out through the space between the face of the shim and that of the shaft to cause an undesired loss in the oil pressure by the loss of oil past the shim and in an internal combustion engine also made it smoke.

Such forced oiling began to be used widely in automobile engines when they were constructed to run at high speeds. In 1917, the patentee, who was chief engineer of the Northway Motor & Manufacturing Company, undertook to develop a shim which could be used in low-priced automobile engines made with a minimum of hand labor in fitting the bearings. He knew that the shim had to be of metal hard enough to hold the halves of the bearing apart when they were tightly bolted and so keep them from pinching the shaft and that the side of the shim which must bear upon the shaft to prevent the escape of oil must be of metal softer than that in the shaft to prevent scoring. So much was obvious. By soldering soft metal to the edge ef the shim, he got something that would do what he desired, but found that soldering did not produce such a union between the hard and soft metals of the shims that they would withstand handling satisfactorily or stand up under reaming in the bearing. He then embedded the soft metal in the hard by dovetailing and obtained a union sufficiently strong to give good results. His preferred construction had a U-shaped spacer of hard metal.

Just when the patentee produced this shim is in controversy. The District Court found that this was not earlier than the middle of August, 1917, and that he reduced his invention to practice about the middle of the following October. His application was filed April 24, 1919, and his patent issued June 28,1921. We believe the evidence fairly supports the findings of the District Court as to the dates of conception and reduction to practice, and accordingly accept them. This patent provided a useful and satisfactory shim, and was extensively used for a short time until Darrach disclosed a better method of manufacture by the use of pressure to join the soft metal to the hard. His patent is No. 1,417,039, issued May 23, 1922. Since Dar-raeh, the plaintiffs have used his shim.

On the question of validity, the defendant relies upon anticipation as shown by the patent to Frost, No. 801,519, granted Oct. 10, 1905, for a journal bearing and on four instances of prior public use of shims which are claimed to anticipate.

Frost provided a rather complicated V-shaped bearing with the entire top half of the portion which came in contact with the shaft made of adjustable take-up strips tipped with soft metal and lying side by side at an angle to the shaft. These strips were separately adjustable relatively to each other and to the shaft and jvere provided with bolts which permitted the adjustments to be made to compensate for wear. Frost did not have a split bearing, and so had nothing which required a shim to keep' solid bearing surfaces apart and permit take-up. Nothing was needed to hold the solid sides of the bearing from pinching the shaft, and, even if the clamping bolt used to hold them in fixed relation after adjustment did squeeze that portion somewhat out of shape, though it is unlikely that the use of so much force was ever necessary to secure them in place, no impingement upon the shaft would be caused. The Frost construction cannot be held to anticipate, for the perfectly simple and perfectly good reason that no shims were used in it.

There was some testimony to the effect that, as early as 1909, employees in the Laing garage at Plainfield, N.

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Cite This Page — Counsel Stack

Bluebook (online)
60 F.2d 902, 15 U.S.P.Q. (BNA) 63, 1932 U.S. App. LEXIS 2638, Counsel Stack Legal Research, https://law.counselstack.com/opinion/general-motors-corp-v-leer-auto-supply-co-inc-ca2-1932.