Clement Manuf'g Co. v. Upson & Hart Co.

50 F. 538, 1892 U.S. App. LEXIS 1752
U.S. Circuit Court for the District of Connecticut·Decided May 26, 1892·No. No. 631·Published·Cited by 1 cases

Opinion

Shipman, Circuit Judge.

This is a bill in equity, which is based upon the alleged infringement of letters patent No. 241,471, dated May 17, 1881, to James Beecher, for an improvement in the manufacture of cutlery and tools, and of letters patent No. 368,051, dated August 9, 1887, to Henry A. Brognard, for improvements in the manufacture of hardware having hollow handles. Before the date of the Beecher invention, — which was at least as early as May, 1879, — the butt ends of the hollow handles of cutlery had been closed up or welded by striking the ends with a cupping die; the blade being welded to the other end of the tubular handle at a prior or subsequent operation. Hollow-handled cutlery had not been formed by simultaneously welding a tubular handle to a blade and closing up the opposite or butt end of the handle, the simultaneous operation being performed by forging between dies. The general object of the Beecher invention was to do this thing. The invention is described by the patentee in his specification as follows, omitting the references to the drawings:

“I provide a rectangular blank of sheet iron, which I form over a mandrel, and weld up into an open-ended tube corresponding .substantially in cross section with that desired for the handle. The blank is of sufficient size to make one handle only. * * * The steel blade is of the ordinary construction, and is provided with a short longitudinal-projection or tang at its end nearest the handle, by Which it is united thereto, as presently to be described. The tubular handle and blade, having been raised to a proper welding heat in a furnace, are then removed therefrom. The tang of the blade is inserted into one of the open ends of the handle, and the handle and blade are placed between a pair of forming dies, the conformation of which corresponds with that desired for the handle, and the concavity of which is of slightly less length than the partially formed handle. The application of the impact of a drop hammer to the dies and the contained blade and handle is then made, [539] with the result oC simultaneously welding together the handle and blade, and closing up the open end of the handle furthest from the blade.”

The two claims of the patent are as follows:

“(1) The improvement in the art of manufacturing cutlery and tools which consists in simultaneously welding a tubular handle to a biade or head, and closing up the opposite end of the handle by forging between dies, substantially as set forth. (2) As a new article of manufacture, a knife or other piece of cutlery or tool having a hollow handle united by welding to its blade or head, and having its ends closed simultaneously by forging between forming dies, substantially as set forth.”

The object which Beecher desired was something more than merely a simultaneous welding of both handle and blade and the closing of the butt end of the handle at one blow. The hollow-handled knives which had been previously made wore, as a rule, defective by reason of imperfect welding at the butt end of the handle, and consequent leakage. The adds which -wore used in the plating process penetrated the interior of the handle, and afterwards leaked out, and this tendency to leakage had been the great obstacle to the manufacture of such knives. Hollow-handled knives which would not leak, either in plating or in use, were a desideratum. It was a matter of common knowledge that if an article was raised throughout its entire extent to proper forging heat, and put in suitable dies, they would act simultaneously upon both ends of the article so placed in them. There was no difficulty in simultaneously welding the blade and handle, and crushing together the edges of the opposite end of the handle. The material part of the simultaneous process was such a construction of the blank and dies as to cause, by a blow upon the sides of the tube, in addition to the welding of the blade and handle, a closing of the open end of the tube in such manner as to produce a complete union of its edges. The shape of Beecher’s dies is vaguely shown in the drawings, but it appears both from the specification and the drawings that the partially formed tube was to extend slightly beyond the length of the concavity of the dies, and that consequently a portion of the metal must be drawn out between their fiat surfaces, and would be welded together as a lap weld. After knives began to be manufactured under this patent as a commercial article, it was ascertained that, under the requirements of manufacturers who plated and thereafter sold the knives, they could not be made at much profit at the price at which they were obliged to be sold. The action of the dies in drawing out between the fiat surface a portion of the metal left “that portion of the edges of the end of the tube, which were covered 'within the die form insecurely welded, and not of good strength,” after the fin was removed. A good many imperfectly welded handles leaked, and must he rejected, which seriously diminished the profit. It became apparent that the Beecher form of dies would result in an undue number of insecurely welded handles, and that a new blank and new die were required. In this condition of the practical manufacture of hollow-handled knives, the patent of Horatio Jordan, dated July 5, 1887, was issued, which described a method of butt welding the end [540] of the tube, which consisted in shaping the end so as to form lobes or projections adapted to be bent inwardly towards each other, in subsequently bending them towards each other, and in drop forging. The complainants, also owned this patent, and brought a suit in equity in this court against the defendants for its infringement. The history of the art so far as it relates to butt welding is given in the opinions in 42 Fed. Rep. 580, and 48 Fed. Rep. 670. The defendants use a Jordan blank, — that is to say, a blank for the handle, with lobes at the end. These projections, before the blank is put into the forging die, are inclined towards each other, so as to substantially cover the butt end of the blank. The handle and blade are assembled and simultaneously forged in the die. The handle blank is inclosed in the die cavity, instead of resting on the face of the die block beyond its cavity. The weld which is created at the butt end of the handle is a butt weld.

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Clement Manuf'g Co. v. Upson & Hart Co., 50 F. 538, 1892 U.S. App. LEXIS 1752 (circtdct 1892).

50 F. 538 (Clement Manuf'g Co. v. Upson & Hart Co.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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