Shaw v. Colwell Lead Co.

11 F. 711, 20 Blatchf. 417, 1882 U.S. App. LEXIS 2454
CourtDistrict Court, S.D. New York
DecidedMarch 18, 1882
StatusPublished

This text of 11 F. 711 (Shaw v. Colwell Lead Co.) is published on Counsel Stack Legal Research, covering District Court, S.D. New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Shaw v. Colwell Lead Co., 11 F. 711, 20 Blatchf. 417, 1882 U.S. App. LEXIS 2454 (S.D.N.Y. 1882).

Opinion

Wheeler, D. J.

This suit is brought for relief against infringement of letters patent reissue No. 3,744, dated November 23, 1869, for an improvement in the manufacture of tin-lined lead pipe. The bill alleges the grant of the original letters, No. 74,613, dated Feb[712]*712ruary 18, antedated February 6, 1868, to the orator; the assignment of them by the orator to Peter Naylor, upon terms that he should pay the expenses of a reissue, prosecute infringers, and pay one-half the net profits to the orator; the reissue to Naylor, assignee of the orator; infringement by the defendant ever since the grant of the reissue; and the reconveyance of the patent, and assignment of all rights of action for infringement, on the seventeenth day of September, 1877, before the bringing of the bill. The answer sets up that the invention had been previously patented in England to George Alderson in English letters patent No. 2,749, on the twenty-fifth day of February, 1804, and to the orator'and Gardner Willard in letters patent of the United States No. 41,401, dated January 26, 1864; that the invention was in public use and on sale, for more than two years prior to the application for the reissued patent, with the knowledge, consent, and allowance of the orator; that the orator, during the years 1866, 1867, and 1868, was the treasurer of the defendant, and allowed the defendant to use the invention; and, by a genei*al denial of so much of the bill as is not otherwise answered, denies infringement. These are the only questions made by the answer that are continued in the evidence or insisted upon in argument; there are others raised by the evidence and insisted upon.

As lead pipe is made by forcing a short and very thick-walled piece through dies, when softened by heat, and thereby making it into a much longer piece of the same sized bore and of the required thickness of wall, so tin-lined lead pipe is made by forcing a like short piece, composed of tin next to the bore and lead outside, through similar dies, when softened by heat, thereby making a much longer piece of pipe, with the inside of tin and the outside of lead. The great difficulty in making it successfully lay in so shaping and proportioning the parts of tin and lead in the short piece that when forced through the dies the inside would be of tin and the outside of lead, each of proper uniformity and thickness. This invention was not of tin-lined lead pipe, for the patent assumed that to be before known, nor of machinery for making such pipe, nor of arranging tin within lead for the purpose of being so forced through dies; for these were either mentioned or described in the patent, and not claimed. The bodies of the tin and lead, when arranged in the short piece, ready to be forced through, are called ingots, and the whole a charge, in the trade. The specification of the patent set forth a central ingot of tin, of the outward form of an inverted double frustum of a cone, the upper frustum containing a little more metal, and being a little [713]*713shorter and more tapering than the lower one, encircled by an intermediate load ingot, of the outward form of an inverted frustum of a cone, having a deep circular cavity, marked D, in the upper end of the ingot, and an outer ingot of lead, of the outward form of a cylinder, including the others, and described, making the lead ingots first, and casting the tin ingot in the intermediate load one, which, as the tin would melt at lower temperature than the lead, would -permit so casting them together without alloying the tin with the lead. There were four claims in the original patent.

(1) Making the charge of metal in three distinct parts, as described, and uniting them either before or after they are put in the cylinder. (2) Making the central ingot or charge of tin, in tlie form of a double frustum of a cone, or its equivalent, for the purpose of securing a uniform thickness of tin in tha lead tube or pipe. (3) Making the intermediate lead or alloy ingot in the form of a -frustum of a cone, substantially as described. (4) Making the cavities, D, in the upper end of the charge for the purpose specified.

There are likewise four claims in the reissue:

(1) The manufacture of lead-encased tin pipe from ingots or a charge of metal, made, substantially as herein described, of three parts, whether the same be united before or after they are put in the cylinder. (2) The manufacture of lead-encased tin pipe from a compound ingot, composed of concentric parts of lead and tin, when the central ingot is made of tin, in the form of superposed inverted frusta of cones, or their equivalent. (3) In the manufacture of the compound ingot for lead-encased tin pipe, the employment of an intermediate cone or cones whereby a large portion of the lead ingot may be east without contact with the tin, thus reducing the alloying of the two metals. (4) In the manufacture of the compound ingot as herein described, the formation of the tin ingot of superposed inverted frusta of cones, the upper one being of larger diameter but proportionately shorter than the other.

No question has been made hut that the reissued patent is properly supported by the original. The infringement claimed is described by the orator himself in answer to cross-question 236, and consists in making a lead ingot in the form on the inside of the outside of superposed inverted frusta of cones, and placing accurately in the center a pipe of tin, of tlie same height, and filling the space between them with molted tin, making a central ingot of tin of the outward form of superposed inverted frusta of cones, encircled by an ingot of lead of the outward form of a cylinder. Here is no charge of metal in three parts, as described in tlie first claim, nor of inter mediate cones or ingots, as described in the third claim of each patent, nor of cavities, D, as described in the fourth claim of the original, nor of an upper frustum of a cone of larger diameter, but [714]*714proportionately shorter than a lower one, as described in the fourth claim of the reissued patent. There is nothing but the central tin ingot in the form of superposed inverted frusta of cones, described in the second claim of each.

The patent of Alderson describes a charge of metal for drawing into tin-lined lead pipe, composed of a central ingot, of tin cast into a hollow cylinder of lead, making the tin ingot cylindrical in outward form, and anticipates nothing in the claims of either patent, and nothing described in either, to be referred to by the claims, except the casting the tin into the lead, which may prevent alloying, as mentioned. The patent of Shaw and Willard, set up in the answer, is for a tin ingot tapering at the lower end and enlarging at the upper, either cast into a lead ingot shaped to receive it, or with a lead ingot cast about it. This latter patent and the patent in suit might infringe upon Alderson’s patent, if that was in force; but these are for forms of ingots different from his, and are only for these improvements in form, and are not anticipated as such by the form in his. And for the same reason the Shaw and Willard patent does not anticipate this. That is for one form of ingot, and this is for another, and as such each stands independent of the other. The second claim is for the manufacture of lead-encased tin pipe from such ingot.

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Bluebook (online)
11 F. 711, 20 Blatchf. 417, 1882 U.S. App. LEXIS 2454, Counsel Stack Legal Research, https://law.counselstack.com/opinion/shaw-v-colwell-lead-co-nysd-1882.