Blum v. Kerngood

92 F. 992, 1898 U.S. App. LEXIS 2649
U.S. Circuit Court for the District of Maryland·Decided February 5, 1898·Published·Cited by 1 cases

Opinion

MOREIS, District Judge.

A defense relied upon is noninfringement. The specification of patent No. 408,300 describes a hook and eye [993] device, in which the hook is made of a broad, flat, thin piece of metal, turned hack upon itself. It is designed to be placed between the two thicknesses of material of which the waistband of a pair of trousers is made. The specifications also describe a peculiar catch, but that is not infringed. It is only with the hook that we-are concerned in this <’ase. The novelty of the hook, and the invention which Ewig supposed he had discovered, can be quite clearly understood from the specification, when read in connection with the state of the art, and a previous patent (No. 375,699) to the same inventor, mentioned in the specification. A broad hook, made of thin sheet metal, inserted between the outer and inner thicknesses of the waistband, with a broad catch opposite to if, has the advantage of keeping the waistband flat, and of distributing the pull over considerable surface, and of counteracting the tendency of the pull to wrinkle the waistband. But the broad body plate of the hook inserted between the two thicknesses of (doHi at their edges had this disadvantage: that the edges of cloth were free, and gave no support' to the hook, and had a tendency to gape open, which was unsightly. The improvement of the patent was that a portion of the hook plate was cut away, so that through the slot thus left the edges of the cloth could he sewed together. But the mere cutting away of a portion of the metal, leaving a slot of any shape, was not new, as is shown by the French hooks in common use, illustrated by the exhibits. The novelty consisted in cutting a slot of the shape and for the purpose indicated by the patent. This was a slot having a straight edge across the plate, over which the two edges of cloth could be stitched, and which effected two beneficial results. One was that the edges, being stitched together just as if the hook was not there, did not gape open, and presented a neat appearance. The other was that the straight transverse edge of the slot presented to the straight stitching of the edges of the doth a wide bearing, at right angles to the line of the pull, wdiich tended to keep the hook firmly in its place, and to resist puckering in the waistband, and keep it flat and neat in appearance. The specification describes the slot as semicircular, because it was round in the hook, and straight like the diameter of a circle at the base of the hook. If the hook was turned back on itself just at the straight edge of its base, it is obvious that the body of the hook could not he inserted between the two layers of cloth far enough to permit the two edges of cloth to he brought together to be stitched; and for that reason the portion bent, hack to form the hook is bent over at a little distance from the straight edge, so as to leave what are, in the specification, called the “shoulders, e, e.”

[994] Claim 1, as first submitted to tbe patent office, and rejected, was as follows:

“(1) In a garment fastening, the combination with a catch. 0, of the hook. B, haying slot, b, substantially as and for the purpose specified."

This claim was rejected, apparently for tbe reason that a slotted book was old. Tbe specification was tben amended so as to more distinctly point out tbe improvement, by inserting tbis:

“Keferring to the drawings, the letter A indicates one member of my fastening, consisting of a piece of sheet metal rounded at one end, and having- a semicircular slot in said end. Said slotted and rounded end is bent over and back upon the body of the member, A, to form a hook, B, and is bent so as to leave shoulders, e, projecting beyond the edge of the body, A, for the purpose hereinafter described.”

In tbe original specification it was said:

“I have found, in practice, that when the hook, B, is at all wide, the edges of the cloth are not sufficiently supported by threads; and, to remedy this defect, I cut away the center of the hook to form a slot, b, as shown in Figs. 1, 2, 3 of the drawing, which permits the cloth to be stitched through said slot, thus not only permitting the cloth to he stitched substantially along its entire edge, but also assisting in firmly securing the member, A, in place.”

Tbe original specification was amended by inserting in tbe clause above quoted tbe following: .'

“And the hook portion, B, is so bent over upon the body portion, A, as to leave the shoulders, e, e, projecting beyond said body, A, which allows the two layers of cloth on each side of the member, A, to meet slightly beyond the edge of the member, A, and permits,” etc.

Claim 1, as amended and allowed, is as follows:

“(1) In a garment fastening, the combination with catch, O, of the plate, A, having the rounded hook, B, provided with a semicircular slot and the shoulders, e, e; said plate, A, being perforated at a, a, substantially as shown and described, and for the purposes specified.”

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Blum v. Kerngood, 92 F. 992, 1898 U.S. App. LEXIS 2649 (circtdmd 1898).

92 F. 992 (Blum v. Kerngood) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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