R. Thomas & Sons Co. v. Electric Porcelain & Mfg. Co.

111 F. 923, 1901 U.S. App. LEXIS 5000
CourtU.S. Circuit Court for the District of New Jersey
DecidedNovember 11, 1901
StatusPublished
Cited by3 cases

This text of 111 F. 923 (R. Thomas & Sons Co. v. Electric Porcelain & Mfg. Co.) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of New Jersey primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
R. Thomas & Sons Co. v. Electric Porcelain & Mfg. Co., 111 F. 923, 1901 U.S. App. LEXIS 5000 (circtdnj 1901).

Opinion

ARCHBALD, District Judge.1

The defendants do not dispute that there lias been an infringement, if the patent in suit is a valid one; but they deny that it is, on the ground that it has no novelty, and that the process involved in it is not patentable, and, if these be found against them, they further assert that Locke was the real inventor, and not Boch, under whom the plaintiff claims. The patent is for a high-tension porcelain electric insulator, manufactured according to a specified method, as set forth in letters patent issued to John W. Boch, March, 1898, on an application filed Octo[926]*926ber 23d previous. Porcelain is recognized as the best resisting material, but the difficulty is to keep it free from flaws and imperfections which make it puncturable. Where there is a high voltage, the tendency of the electric current is to arc, especially in wet weather, by seeking out any existing defects in the insulating material, and to prevent this the greatest care has to be exercised to see that there are no cracks or flaws where dust and dampness can get in, and there is the least likelihood of this where the porcelain is baked in thin pieces. Acting on this idea, the Boch insulator is made up of two or more bowls or shells, molded so as to nest or fit into each other, being calculated in this shape to vitrify as perfectly as possible; and, in order to weld them into one, they are fitted together upside down, and liquid glaze poured into the cup-like spaces or channels provided to receive it in between, and upon being put in the oven in this position the glazing material flows down as the clay shrinks, not only filling up the joints, but penetrating into whatever cracks or crevices may form in the process of firing, and .at the same time cementing and solidifying the parts into a single mass, so as to stand the requisite high mechanical strain. It is this process and the resulting product that the patent in suit is intended to cover and protect.

There is no novelty in an insulator made up of separate parts fitted into each other, whether of the same or different material. This appears in the Varley English patent (1861), the Johnson & Phillips (1878) , the Pass and Seymour Cuban insulator (1892), the Hauty (1893), the Locke (1896), and the Locke Cornell two-part insulator of February, 1897. Neither does fusing the two parts together add anything. Admittedly this is an ordinary process in pottery, which is exemplified in the N. Boch door knob (1875), the Geery mantle (1879) , and the Anderson irrigating tile (1886). In the Locke insulator of February, 1897, also the shells were to be fused into one.

But the novelty claimed for the patent in suit consists not in these things alone, but in a combination of them, with the other and further step of supplying an extra amount of liquid glaze, sufficient not only to fuse the separate parts into a single whole, but to so fuse them that all the cracks and crevices which exist or may arise in the process of firing shall be completely closed and filled. This is secured, as already said, by turning the parts with the petticoats up, and thus providing a receptacle or reservoir to hold the glazing material, and conduct it down in between the porcelain shells as they are being fired. In other words, it is not so much the fusing as the particular manner of doing so, and the results thereby obtained, that constitute the invention; and this, in my judgment, has not been anticipated by anything found in the prior state of the art. *

The Dinsmore experiment comes the nearest to doing so. About the middle of January, 1897, Locke sent to the Imperial Porcelain Works, a firm doing business at Trenton, blueprints from which to have some two-part insulators constructed. Mr. Dinsmore, one of the firm, had dies cut out according to the patterns so given him, and insulators molded from them, somewhat in the annexed form:

[927]

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Related

Naylor v. Alsop Process Co.
168 F. 911 (Eighth Circuit, 1909)
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136 F. 210 (U.S. Circuit Court for the District of Middle Pennsylvania, 1905)

Cite This Page — Counsel Stack

Bluebook (online)
111 F. 923, 1901 U.S. App. LEXIS 5000, Counsel Stack Legal Research, https://law.counselstack.com/opinion/r-thomas-sons-co-v-electric-porcelain-mfg-co-circtdnj-1901.