St. Paul Plow Works v. Deere

54 F. 501, 1893 U.S. App. LEXIS 2480
U.S. Circuit Court for the Northern District of Illnois·Decided February 17, 1893·Published

Opinion

BAKER, District Judge.

The bill of complaint charges the defendant, Deere & Co., a corporation, with infringing the claim of letters patent of the United States to John E. Perkinson, June 6, 1876, Kb. 178,461, for “improvement in harrows,” which is owned by the complainant. It prays for an injunction and damages. The answer presents, in substance, as grounds of defense, want of novelty in the alleged invention, anticipation in prior patents, and nonin-fringement. In the specification the invention is described as follows;

“My harrow is composed of three distinct and separate harrows, the center one of which is composed of a center beam, A, with a crossbar, B, near each end, passing through a mortise therein. These bars also pass through mortises in side beams, O, 0, which are set at an angle towards both sides, as shown, and teeth, a, are passed through the beams at suitable distances apart. The side harrows are composed each of a series of parallel beams, D, connected by bars, E, passing through, mortises therein; the beams being set inclined, so as to correspond with the inclination of the side beams, 0, of the center harrow. Tooth, a, are also passed through the beams of the side harrows. All the harrows are connected by lints, b, with an equalizing bar, G-, to vrtiich the ends of a. chain, d, are secured, and the doubletree is attached in the center of said chain. By moans of the equalizing bar and chains, as described, the harrow will work equally as well on side hill as on level ground.”

The claim is as follows:

“Wliat I claim as new, and desire to secure by letters patent, is the combination of the reversed outer harrows, D, E, D, E, and the corresponding cen[502] ter harrow, A, B, C, connected by chains, b, to the evener, G, having the draught applied by a chain, a, substantially as described, and for the purpose set forth.”

When, as in this case, the claim immediately follows the description of the invention, it may be construed in connection with the explanations given in the description; and if, as here, the claim contains words referring back to the specification, it cannot properly be construed in any other way. Seymour v. Osborne, 11 Wall. 516.

For the purpose of showing the prior state of the art, and that the alleged invention of Perkinson had been anticipated, 57 patents and a large number of models of simple and combination harrows were produced in evidence and exhibited on the hearing. To analyze these various patents and models and point out their elements of coincidence with or divergence from the complainant’s combination would-be alike tedious and unprofitable. It is sufficient to say that the center harrow in the complainant’s combination is the old triangular or A-shaped drag which had been known and in familiar use long prior to his invention. The side harrows in its combination, composed of parallel beams extending from front to rear, connected by crossbars passing through mortises therein, the beams being set inclined so as to correspond with the inclination of the outer beam in the A-shaped harrow, had also been long known and used, and were familiar to the trade. The equalizing bar or evener, the chains or links for securing harrows to the same, and the chain attached to the evener, to which the doubletree is secured, were all old and familiar devices. The defendant had previously manufactured and introduced into extensive use combination harrows composed of two or more rhomboidal or diamond-shaped harrows identically similar to the outer harrow on the.right side of the complainant’s combination. In this combination harrow of the defendant, whether composed of two or more rhomboidal or diamond-shaped harrows, each section is secured to an equalizing bar or evener by chains or links, and the doubletree to which the draught is attached is secured to the equalizing bar or evener by a chain. In these particulars the combination harrow- covered by the complainant’s patent is similar to the combination harrows previously manufactured and sold by the defendant. Every element composing the complainant’s combination was known in the art of manufacturing harrows, and had been in public use prior to its alleged invention.

In view of the state of the art, the complainant’s combination, in my judgment, stands close upon the border line separating a patentable invention from an improvement which would be suggested by the prior state of the art to a competent and skillful mechanic familiar with the manufacture and use of harrows. Adams v. Stamping Co., 141 U. S. 539, 12 Sup. Ct. Rep. 66; Hailes v. Van Wormer, 20 Wall. 353; Pickering v. McCullough, 104 U. S. 310. The complainant’s combination, however, has been held to embody a patentable invention, and, with some hesitancy, I concur in that opinion. See Howard v. Plow Works, 35 Fed. Rep. 743. In this case the court says:

“The patent to the latter [Perkinson] covers a combination of three harrows, the two outer ones being reversed, and being composed of parallel beams, [503] tho center one being A-shaped, and all of the harrows being connected by links with an equalizing bar or evener, the beams of the reversed outer harrows having the same inclination as the corresponding side beam of the center harrow.”

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St. Paul Plow Works v. Deere, 54 F. 501, 1893 U.S. App. LEXIS 2480 (circtndil 1893).

54 F. 501 (St. Paul Plow Works v. Deere) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

Related

Seymour v. Osborne
78 U.S. 516 (Supreme Court, 1871)
Hailes v. Van Wormer
87 U.S. 353 (Supreme Court, 1874)
Fuller v. Yentzer
94 U.S. 288 (Supreme Court, 1877)
Pickering v. McCullough
104 U.S. 310 (Supreme Court, 1881)
Adams v. Bellaire Stamping Co.
141 U.S. 539 (Supreme Court, 1891)