Burr v. Cowperthwait

4 F. Cas. 801, 4 Blatchf. 163

This text of 4 F. Cas. 801 (Burr v. Cowperthwait) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of Connecticut primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Burr v. Cowperthwait, 4 F. Cas. 801, 4 Blatchf. 163 (circtdct 1858).

Opinion

INGERSOLL, District Judge.

Previous to the year 1846, efforts had been made to form hat-bodies, by throwing the fibres of the wool or fur, by means of a brush or picker cylinder, in proper proportions, on to a perforated cone, exhausted by a fan or other contrivance at its base, to hold the fibres on the cone, by the currents .of air, which rush through the perforated cone, and to sufficiently harden the bat of wool or fur, while on the cone, to enable the operator to remove it from the eone, as formed, to go through the other processes, to make a complete hat; but, previous to the discovery and invention of Henry A. Wells, no devices were known to accomplish the desired object in a satisfactory way. By the discovery which Mr. Wells made, and which he described in the specification to the patent which he obtained, he did accomplish this object. It was attained by throwing the fibres of wool or fur on to a cone exhausted by a fan or other contrivance at its base, to hold the fibres on to the cone, by regulating the distribution of fur or wool on the cone, so as to make the bat of fur or wool thick or thin, where desired, by the aid of certain devices in the specification described; and by certain other devices for hardening and interlocking the fibres while on the cone, to accomplish the result, so as to enable the operator to take the bat from the cone as formed, to go through the other processes, to make a complete hat. Mr. Wells having made this discovery', fully described the same in a written specification presented to the patent office, and, on the 25th of April, 1846, a patent was granted to him according to the claim which he then made. That patent has been repeatedly decided by the courts to be valid, and to grant what it purported to grant.

Previous to the year 1856, the right to that patent, and to the discovery which Mr. Wells made and described in his specification, became, by various assignments, vested in the plaintiffs. They, conceiving that the patent did not grant an exclusive right to the whole invention, as described in the specification, caused it to be surrendered, with the view of securing to themselves the exclusive right to the whole invention and discovery made by Wells and described in his specification. Upon such surrender, and on the 30th of September, 1856, a reissued patent was granted to the plaintiffs, securing to them the exclusive right of forming bats of fur fibres by throwing the fur, in properly regulated quantities, substantially as described in the specification, against a section of the circumference of a perforated cone or other form, as the same is rotated, to present in succession every part of the circumference thereof to the current of impelled fur, to obtain the required thickness of bat, substantially as described in the specification, in combination with the method of holding the fibres on the cone or other form, during the operation, substantially as described in the specification, and for the purpose specified; and, on the 7th of October, in the same year, a reissued patent was granted to them, securing to them the forming of the bat of fur fibres on the perforated cone or other form, in manner as substantially described in the specification, in combination with the hardening of such bat, while on such cone or other form, to give it the required consistency to admit of taking it off in a suitable condition for sizing by the well-known process of felting, substantially as described.

[803]*803The bill charges that the defendant, at Danbury, in Connecticut, is manufacturing hat-bodies substantially according to the manner first described by the said Wells, and in violation of the rights secured to the plain-' tiffs under the two last-mentioned patents; and the prayer of the bill is, among other things, that he be restrained by injunction from so doing. The defendant admits that he is manufacturing hat-bodies at Danbury, but he denies that by so doing he is violating any right secured to the plaintiffs by either of their patents. Three Questions, therefore, are presented for consideration: First. What are the rights which the plaintiffs’ patents purport to grant to them? Second. Are the grants which the patents purport to make, valid grants of right? And, if they are, then, third, is the defendant infringing upon any of the rights so granted to the plaintiffs?

Whoever discovers that a certain useful result will be produced, in any art, machine, or composition of matter, by the use of certain means, is entitled to a patent for it, provided he specifies the means he uses, in a manner so full and exact, that any one skilled in the science to which it appertains, can, by using the means he specifies, without any addition to, or subtraction from them, produce precisely the result he describes. And, if this can not be done by the means he describes, the patent is void. And if it can be done, then the patent confers on him the exclusive right to use the means he specifies, to produce the result or effect he describes, and nothing more. And it makes no difference, in this respect, whether the effect is produced by chemical agency or combination, or by the application of discoveries or principles in natural philosophy, known or unknown before his invention, or by machinery acting altogether on mechanical principles. In either case, he must describe the manner and process, as above mentioned, and the end it accomplishes; and •any one may lawfully accomplish the same end without infringing the patent, if he uses means substantially different from those described. O’Reilly v. Morse, 15 How. [56 U. S.] 62, 119. The end or result produced is not secured by the patent, but only the substantial means used and specified to produce the end or result — these, and nothing more. The same end or result may be produced by means other than those substantially described in the specification, without infringing the patent.

The reissued patent of the 30th of September, 1856, is for a combination of certain means, by which a sheet of fur is thrown on a section of an exhausted rotary cone, or other form, parallel with its axis, so that the deposit of fur on the revolving cone, or ■other form, by the means used and specified, can be regulated at the will of the operator, so as to make the hat-bat, or other body formed on the cone, or other form, of the desired shape and thickness, thick or thin, where required. The devices or essential means used, and set forth in the specification, to accomplish this result, are a feed-table, upon which the fur is distributed; a suitable feeding apparatus, to which the fur is brought by the feed-table, and which presents and holds the fur to the action of one or more rotary brushes, or other suitable device, for disintegrating and casting the fur into a current of air, induced by the rotary brush or brushes, or other suitable device; a trunk, or some analogous device, interposed between the rotary brush and the cone upon which the fur is to be thrown, and extending some distance from the rotary brush, or other suitable device, towards, and in the direction of, a perforated exhausted rotary cone, upon which the fur is to be thrown, to control and give direction to the current of air bearing the disintegrated fur from the rotary brush; and a hinged hood, or some analogous device, by which the current of air bearing the fur may be further modified, for the proper distribution of the fur upon the cone, in the direction of its length.

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Cite This Page — Counsel Stack

Bluebook (online)
4 F. Cas. 801, 4 Blatchf. 163, Counsel Stack Legal Research, https://law.counselstack.com/opinion/burr-v-cowperthwait-circtdct-1858.