Hemphill Co. v. Holeproof Hosiery Co.

143 F. Supp. 727, 109 U.S.P.Q. (BNA) 478, 1956 U.S. Dist. LEXIS 3023
CourtDistrict Court, N.D. Georgia
DecidedMarch 13, 1956
DocketCiv. A. No. 4925
StatusPublished
Cited by1 cases

This text of 143 F. Supp. 727 (Hemphill Co. v. Holeproof Hosiery Co.) is published on Counsel Stack Legal Research, covering District Court, N.D. Georgia primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Hemphill Co. v. Holeproof Hosiery Co., 143 F. Supp. 727, 109 U.S.P.Q. (BNA) 478, 1956 U.S. Dist. LEXIS 3023 (N.D. Ga. 1956).

Opinion

SLOAN, District Judge.

This complaint was filed by Hemphill Company, as plaintiff, against the defendant, Holeproof Hosiery Company. The plaintiff is the owner of the Lawson & Green Patent No. 2,217,022 for “Solid Color Pattern Knitting Machine” and alleges that the defendant, Holeproof Hosiery Company has infringed method claims 2 and 3 and apparatus claims 48, 50 and 52 of said patent.

While admitting plaintiff’s ownership of the patent, the defendant asserts that the claims in suit are void and that the Coile machine used by defendant does not infringe claims 2, 3, 48, 50 and 52 of the Lawson & Green Patent.

The action having been tried to the Court, without a jury, and the parties having been duly heard, the Court here-: with makes the following:

Findings of Fact

1. Plaintiff is a corporation organized under the laws of Massachusetts and is the owner of Patent No. 2,217,022 for “Solid Color Pattern Knitting Machine” issued on October 8, 1940, on the application of Lawson & Green.

2. The defendant is a Wisconsin corporation and is a manufacturer of hosiery. It has had, and now has, a regular and established place of business in the Northern District of Georgia, Atlanta Division, at Marietta, Georgia which it has used beginning in 1944 and is now using certain knitting machines known as Coile machines, hereinafter designated as such.

3. The Coile machines used by the defendant were purchased from the manufacturer thereof and used by the defendant for knitting hosiery. For many years prior to the issuance of the patent in suit, no automatic mechanism for knitting Argyle socks was known. Argyle socks, characterized by patterns on the leg, usually diamond forms of contrasting solid colors, were in popular demand which was supplied by knitting the socks by hand or hand machines.

4. Lawson & Green undertook to develop a method of knitting and a machine which would produce solid color patterns in an automatic manner. By this invention, they did provide an automatic machine capable of knitting first the top of the stocking with continuous rotary knitting, then automatically shifting to reciprocating knitting and during the reciprocating knitting different yarns were fed from different stations to selected groups of needles. These groups differing in number in each course of knitting so that the pattern portion of the leg was knit, course by course, with the different yarns necessary to form the [729]*729diamond pattern design, completing each, course before beginning the next and when the pattern leg portion has been completed the invention then automatically shifts to knit the heel and toe portions. By the patented method and machine, the entire sock is knit automatically.

5. In the patented machine there is a needle cylinder with needles arrayed around it which are normally in an inoperative position during the reciprocatory knitting stage and are acted on by selector mechanisms under control of pattern drums so that different groups of needles are selected and lifted into operative position on approaching each yarn feeding station, thereby different groups of needles are caused to knit the selected yarns in each course and the terminal needles of each group interknit the yarns knitted by the respective groups to complete each course of stitches around the sock at a single stroke of the machine.

6. The first six machines manufactured by plaintiff under the patent were purchased by the Interwoven Company shortly before the war to make Argyle socks. These machines were used continuously until 1955. Since the war, plaintiff has sold 2,258 of the patented machines for approximately $7,000,000.

7. The plaintiff’s commercial machines are substantially identical with that shown and described in the patent in suit, except that the quadrant controlling the reciprocation during knitting •of the patterned area has been lengthened enough to avoid making a back seam as ■shown in the patent. This change is not a departure from the patent but a mere substitution of mechanical equivalents, a matter of choice depending on whether the user desires to make seamed Argyles like those previously produced from flat blanks (Lamb machine type) or those having no seam (Harley-Kay type).

8. Beginning in 1954, the defendant corporation purchased and operated a number of the accused Coile machines. The defendant has used said machines for knitting hosiery. The Coile machines make Argyle socks automatically.

9. The Coile machine is more complicated than the machine in patent and contains added attachments. In regard to the features defined in the claims in suit, the Coile machine corresponds closely to the patented machine, having mechanisms of substantially the same character combined and cooperating in substantially the same way and achieving the same result.

10. The Coile machine has four yarn feeding stations; the patented machine has two, with yarn feed fingers at each to shift the yarn so each station does double duty. This is a mere substitution of an obvious equivalent without any change in function. The claims in suit are not specific to any such details of yarn feeding.

11. The Coile machine has its selector mechanisms and pattern drums arrayed on decks below the knitting deck; the patented machine has its selector mechanisms and pattern drums on the knitting deck. ■ The claims are not concerned with the location of these mechanisms, but with their operation in selecting the different groups of needles at the appropriate time to knit the selected yarns. Defendant’s mechanisms serve this function by selecting and lifting the jacks corresponding to the selected needles exactly as in the patent in suit. .

12. In knitting the pattern portion of Argyle socks, the Coile machine automatically performs all of the steps defined in the method claims in suit in substantially the manner described in the patent and with the same result.

13. The Coile machine embodies all of the means defined in the apparatus claims in suit combined in substantially the manner described in the patent and cooperating to achieve the same result. The parts of the Coile machine which perform the functions specified in the apparatus claims are the full equivalents of the corresponding parts of the machine described in the patent.

14. Defendant’s attack on the validity of the claims over the prior art is on the basis of ten prior United States pat[730]*730ents and extracts from two early publications. The subject matter of these references falls into four groups:

(a) Flat bed and “V” bed knitting machines: The Textbook of Miller, pp. 219 and 220, the American Mechanical Dictionary, p. 1235, and the patents to Schwartz 1,228,483, Werfelman 1,877,262 and Steinhardt 1,990,440.

(b) Circular knitting machines for making split foot stockings: The patents to Shaw 460,039, Lawson 1,467,549 and 1,458,833, and Jones 1,796,202.

(c) Circular knitting machines for making vertical stripes: The patents to Robinson 1,947,617 and Blackburn 1,084,-194.

(d) Circular knitting machines for making plain stockings: The patent to Hemphill 933,433.

15. The flat bed and “V” bed knitting machines disclosed by the references of Group (a) are remote from the subject matter of the claims in suit. They are not circular knitting machines. There is no needle selection. The patterning is effected solely by manipulation of the yarns.

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Bluebook (online)
143 F. Supp. 727, 109 U.S.P.Q. (BNA) 478, 1956 U.S. Dist. LEXIS 3023, Counsel Stack Legal Research, https://law.counselstack.com/opinion/hemphill-co-v-holeproof-hosiery-co-gand-1956.