Central Ry. Signal Co. v. Metallic Shell & Tube Co.

228 F. 909, 1915 U.S. Dist. LEXIS 1034
CourtDistrict Court, D. Rhode Island
DecidedDecember 14, 1915
DocketNo. 31
StatusPublished

This text of 228 F. 909 (Central Ry. Signal Co. v. Metallic Shell & Tube Co.) is published on Counsel Stack Legal Research, covering District Court, D. Rhode Island primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Central Ry. Signal Co. v. Metallic Shell & Tube Co., 228 F. 909, 1915 U.S. Dist. LEXIS 1034 (D.R.I. 1915).

Opinion

BROWN, District Judge.

The bill charges infringement of letters patent to W. D. Jackson, No. 824,019, June 19, 1906, on application filed December 26, 1903, for track torpedo, and letters patent to C. E. Beckwith, No. 123,396, reissue November 7, 1905, on application of May 30, 1905, for reissue September 13, 1905, for railway torpedo.

Both patents relate to torpedoes used for railway signaling purposes.

The prior patented art discloses a number of such devices:

Hickman .160,431.1875.
Hickman .173,291.1876.
Bevington ..375,254.1887.
W. C. Beckwith.409,902.1889.
E. G. Beckwith.501,399.1893.
Bevington & Fisher.608,020.1898.
Dutcher .610,672.1898.
Broe .647,938.1900.

A track torpedo comprises, first, a torpedo; second, means for attaching the torpedo to the rail. The torpedo proper consists of detonating material in a suitable' shell or container. Metal was sometimes used for the shell; but, in order to avoid danger from flying-bits of hard metal, other material was commonly used.

The torpedo is secured to the rail by some means which must engage both the torpedo and the rail. Soft or flexible metal strips or securing straps, which can be bent readily over opposite sides of the head of the rail, ‘were the ordinary means for engaging the rail. Leaden strips were commonly used. The prior patent to Beckwith, 501,399, speaks of “the ordinary soft metal securing strip.”

As shown by the prior art, these strips were attached to the torpedo in various ways. In Hickman, 160,431, they are made integral with the container or shell of the torpedo; the container and straps being struck up from a single piece of soft or ductile sheet metal. It is obvious, of course, that when the straps and shell of the torpedo are made [910]*910of the same material and in a single piece they require no attachment other than that which results from continuity of the material. When, however, the strap and the torpedo shell are made in separate pieces and of different materials, it is necessary to attach the strap' or straps to the torpedo, in order that the torpedo may be connected with the rail. This attachment is made by passing the strap over tire top of the container, Hickman, 173,291; Broe, 647,938; by soldering, Bevington, 375,854; by the use of tacks, Beckwith, 501,399; by passing, the strap between inner and outer layers of the shell and through slots in the outer layer of the shell, Dutcher, 610,672.

[1] The claims of the Jackson patent now in suit are 2 and 3:

“2. As a new article of manufacture, a track torpedo comprising a casing of paper having a filling of detonating material exploding under pressure, means •for securing said torpedo to the head of a rail, and means encircling the body of said torpedo for retaining said securing means thereto.
“8. As a new article of manufacture, a track torpedo of tubular shape, having a filling of detonating material exploding under pressure, means for securing it to the head of a rail, and means encircling the body of the torpedo for retaining said securing means thereto.”

Because Jackson makes his securing strap and his torpedo shell of different materials and in separate parts, he is compelled to furnish means for uniting them, in order to secure a connection between the track and the torpedo.

The defendant’s device resembles that of Hickman, in that the straps and the shell of the torpedo are made integral, of the same material. The defendant places the explosive material in a paper envelope, which is folded up and placed withip a tube of thin lead foil. The lead foil is pinched in on either side of its central portion to form the shell of the torpedo, while the end portions of the tube are folded up to form leaden strips of"sufficient thickness and consistency to serve as straps for connection to the rail.

It is obvious that this track torpedo is of a very different type from the track torpedoes of the patents in suit, for the reason that the problem, if there be any problem, of attaching the straps to the shell, is solved by making all in a single piece. In this respect the defendant’s device is of the Hickman type. .

The means provided by Jackson for connecting his securing strap to the torpedo body was of the simplest and most obvious character. He uses, the ordinary leaden strap, places it lengthwise of a tubular torpedo body, and unites the torpedo and strap by slipping over both an open-ended tube, or, as an alternative, tubular bands. The claims are drawn broadly to include—

“means encircling tlie body of said torpedo for retaining said securing means thereto.”

By “securing means” he means simply a strip of lead which, properly speaking,'is not in itself a securing means, for alone it has no provision for attachment to the torpedo. The Jackson invention is fully represented by passing a pair of rubber bands over the torpedo case, and the lead strip, and thus holding them together, or it would be fully represented by tying the leaden strip to the tube by two pieces [911]*911of tape. Such devices are within the claims, and would infringe them if they are valid.

Nor can the claims he saved by limiting the encircling means to a complete tube; for they are specifically drawn to cover bands, as well as the tube, as appears by the specification. It is apparent that neither the bands, which leave exposed, not only the ends, but a portion of the side, of the torpedo shell, nor the tube which covers the sides, but not the ends, of the torpedo, can be considered as the shell of the torpedo, since neither form confines the explosive. In complainant’s brief the tube or bands which retain the lead strip to the body of the torpedo are referred to as an “inclosing case.” This is inaccurate.

It is then argued that the use of an inner case or explosive container in combination with an outer case is of marked utility, in that it enables the explosive charge to be practically measured in the inner receptacle, and when so measured in the inner receptacle to be readily placed within the encircling tube or member. It is argued that each of the patents of the prior art shows only a single case, and does not show a container in which the explosive is measured and placed, and this container placed within an outer tube or encircling means or member, as disclosed in the Jackson patent and in the defendant’s torpedo. This is entirely an expert importation into the case, and has nothing to do with the patent in suit, which neither shows nor claims two complete cases for the explosive.

The complainant fallaciously attempts to find in the defendant’s device the three elements of the Jackson patent. It first contends that an ordinary paper envelope containing the explosive charge, which is folded up and placed within the leaden tube, constitutes the defendant’s torpedo. This is erroneous. The torpedo of the defendant consists, not only of the explosive charge in a paper envelope, but of the protecting shell of lead foil which completely incloses the paper envelope and explosive.

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Bluebook (online)
228 F. 909, 1915 U.S. Dist. LEXIS 1034, Counsel Stack Legal Research, https://law.counselstack.com/opinion/central-ry-signal-co-v-metallic-shell-tube-co-rid-1915.