EP0039707B1 - Chaussette tricotee amelioree - Google Patents
Chaussette tricotee amelioree Download PDFInfo
- Publication number
- EP0039707B1 EP0039707B1 EP80902163A EP80902163A EP0039707B1 EP 0039707 B1 EP0039707 B1 EP 0039707B1 EP 80902163 A EP80902163 A EP 80902163A EP 80902163 A EP80902163 A EP 80902163A EP 0039707 B1 EP0039707 B1 EP 0039707B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leg
- fabric
- sock
- calf
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 210000002414 leg Anatomy 0.000 claims abstract description 151
- 239000004744 fabric Substances 0.000 claims abstract description 63
- 210000003127 knee Anatomy 0.000 claims abstract description 18
- 230000007423 decrease Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 9
- 239000004753 textile Substances 0.000 claims description 2
- 244000309466 calf Species 0.000 abstract description 7
- 210000003423 ankle Anatomy 0.000 abstract description 4
- 210000002683 foot Anatomy 0.000 description 19
- 238000009940 knitting Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 8
- 230000001225 therapeutic effect Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 206010040880 Skin irritation Diseases 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000036556 skin irritation Effects 0.000 description 5
- 231100000475 skin irritation Toxicity 0.000 description 5
- 238000007373 indentation Methods 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 229920002334 Spandex Polymers 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004759 spandex Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 210000000544 articulatio talocruralis Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
- D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
- D04B1/26—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel stockings
Definitions
- This invention is concerned with knitted hosiery for men, women and children.
- the invention is directed specifically to hosiery that does not extend above the knee of the wearer, and referred to as socks.
- the invention relates to socks having a leg length not extending above the mid-calf part of the human leg when in normal position (position of minimum energy) during wear. Included in this category of socks are items known as “short socks”, “ankle socks”, “anklets”, “half hose”, “crew socks”, “below-the-calf socks”, “mid-calf socks”.
- the invention also relates to socks that extend close the wearer's knee and sometimes referred to as “executive length socks", “knee high socks", or "walk socks”.
- socks will mean knitted garments for clothing the foot and leg that do not extend above the knee of the wearer when in the normal wearing position and composed of a fabric having less than about 105 stitches per square centimetre (700 stitches per square inch) when measured fully stretched in course and wale directions and at standard conditions for testing textiles.
- socks as distinct from stockings which reached over the knee, were chiefly of a length reaching to the wearer's knee, or else to the mid-calf part of the wearer's leg, the latter being known as "half-hose".
- half-hose In order to restrain the leg of the knee length socks from slipping down a wearer's leg whilst walking, circular garters generally made from rubber elastic braid were used. The leg of the half-hose type of sock was restrained from slipping by suspenders, attached to the wearer's leg between the knee and calf muscle, and clipped to the top of the leg of the sock.
- the purpose of the elastic top was the incorporation within the sock of means of restraining the leg portion from slipping down a wearer's leg during walking, thus eliminating the need to have extraneous means of restraint as described above.
- the elastic top in a below-the-calf sock is stretched when initially placed on the leg and thus grips the leg of a wearer. After a period of wearing, during which the wearer walks with a normal gait and velocity of leg, it is usual for a sock to progressively slip down the wearer's leg, forming wrinkles in the fabric of the lower part of the leg of the sock. This slippage commonly occurs even when the elastic top exerts pressure on the leg of such magnitude as to cause temporary skin indentation and irritation.
- the part of the human leg is approximately the shape of an inverted truncated cone.
- the fabric of the leg portion of the sock usually exerts a pressure on the leg of the wearer and this sock-to-leg pressure will generally vary according to position between the two locations referred to above.
- the pressures are exerted as a consequence of the varying circumferential extensions giving rise to varying circumferential tensions within the fabric of the leg of a sock.
- the force exerted by the fabric on to the leg in a circumferential plane is, by virtue of the shape of the leg, not normal to the leg surface. It may, therefore, be resolved into two components, one being normal to the leg surface and the other one downwards along the leg surface, a fact to which reference is made hereinafter.
- the fabric-to-leg pressure progressively decreases from the location of minimum leg circumference to the mid-calf location at a rate so that the fabric-to-leg pressure at the mid-calf is less than 60% of the value at the minimum leg circumference.
- the decrease in the fabric-to-leg pressure at the mid-calf is to between 5% to 60% of that at the location of minimum leg circumference, and preferably to between 20% to 40%.
- the minimum percentage decrease in the fabric-to-leg pressure from the value at the minimum leg circumference to the top marginal portion is 40% multiplied by the ratio of the distance from the minimum leg circumference to the marginal top of the sock to the distance from the minimum leg circumference to the mid-calf.
- a leg fabric which resists slipping down a wearer's leg can be constructed initially by providing a portion of fabric around the place where the leg has minimum circumference and extending it down to the ankle joint.
- This portion of fabric has moderate to high circumferential tension whilst on the leg and, therefore, moderate to high fabric-to-leg pressure. Then there is required a decreasing of the circumferential tension and fabric-to-leg pressure at a selected and relatively rapid rate whilst proceeding from the region of minimum leg circumference to the top margin of the sock.
- the portion of fabric at the minimum leg circumference (band 1) and extending down to the ankle joint is located on an approximately conical shaped section of the wearer's leg and, therefore, the circumferential fabric tension has a force component 'parallel' to the leg surface tending to push the fabric upwards.
- the position of fabric at the minimum leg circumference possesses an added ability to resist displacement downwards. Frictional resistance is also present.
- the adaptation of the Hatra Hose Pressure Tester involves replacing the woman's foot portion by appropriately larger ones for mens' socks and appropriately smaller ones for children's socks then extending the suspender clips from the locations existing for hosiery of which the legs extend above a wearer's calf, so as to be able to secure during test various socks with legs which extend to locations below a wearer's calf. Additional modification for testing children's socks involves replacement of the fixed and removable arms by ones with smaller cross section.
- the "M" position is the one designated for women's surgical, therapeutic and support stockings and pantyhose comparison and contrast can be made between the pressure generated by these hosiery items at various locations on the leg and by the socks of the present invention.
- Table I The purpose of Table I is to indicate the fabric-to-leg pressures applicable to all socks of the present invention and contrast these with pressure figures indicated in two prior United States Patents, a recognized quality standard, a recommended quality standard and also with pressure figures which are typical of three types of men's socks of conventional type.
- socks of the present invention differ markedly and, therefore, belong to a different class of garment to conventional socks and to surgical, therapeutic and leg-support hosiery and support socks and are characterized by a much greater decrease of fabric-to-leg pressure from the location of minimum leg circumference to mid-calf.
- Figures in each column are fabric-to-leg pressures expressed as a percentage of the pressure at the minimum leg circumference of each item.
- the percentage figure for the minimum decrease of fabric-to-leg pressure from the minimum leg circumference to the top marginal location will be the same proportion of 40% as the distance between the minimum leg circumference and top margin of the sock is to the distance between the minimum leg circumference and the location of the mid-calf circumference.
- this invention is particularly applicable to socks having a leg length not extending above the mid-calf part of the human leg when in the normal position of wear, nevertheless, it is applicable to socks which extend above the mid-calf, for example knee-length socks.
- Socks having a leg length extending above the mid-calf are characterized by a decrease in fabric to leg pressure at mid-calf of at least 60% from the figure forfabric-to-leg pressure at the minimum circumference position, with fabric-to-leg pressure in locations from mid-calf to the top margin not being critical. Owing to the resistance to slipping exhibited by the leg fabric below the mid-calf, the circumferential fabric tension and fabric-to-leg pressure in the leg portion between mid-calf and knee will not need to be as great as required in knee length socks of conventional construction, and thus the socks in addition will produce enhanced personal comfort.
- While the actual fabric-to-leg pressure at the minimum leg circumference may be relatively high even up to 50 mm mercury, preferred ranges are minimum leg circumference about 1067 to 2133 Pa (8 to 16 mm mercury), mid-calf circumference about 267 to 8000 Pa (2 to 6 mm mercury).
- a sock it is common practice to design a sock to fit a range of one or more foot sizes. Such foot sizes may be designated by shoe size or by foot length according to the system used. Within any range of one or more foot sizes, the contours of the feet and legs of the population of wearers vary and in this particular case, those portions of legs located below the knee.
- the one design of sock is, nevertheless, expected to fit not only wearers' feet of varying dimensions but also wearers' legs of varying dimensions. Socks with the characteristics of this invention can exhibit resistance to slipping down wearers' legs and minimal or negligible skin indentation or skin irritation for a high percentage of any population of wearers and for selected values of sock characteristics this percentage will exceed 90%.
- the performance in wear exhibited by the socks of the present invention differs noticeably, therefore, from that of mid-calf and below the calf socks having the prior known elastic tops.
- these latter types of percentage of population which finds resistance to slipping down the leg during walking together with freedom from skin indentation and skin irritation may be as low as 10%.
- the production of socks with legs not extending above the mid-calf, without discrete elastic tops, but with an elastic yarn knitted or laid into the whole length of the leg fabric with constant yarn length per course does not greatly increase the percentage of a population of wearers with socks which resist slipping down their legs during walking.
- the required fabric-to-leg pressure of the sock may be achieved by incorporating elastic threads into the fabric of the sock. These threads may be made either wholly or partly of elastomeric material and/or textured or otherwise processed polymeric filament or fibre imparting elastic quality to the thread.
- the variation in the pressure may be achieved by varying the quantity of elastic thread or by varying the tension in the thread during the actual incorporation thereof into the fabric.
- the variation in tension may be obtained by variation in the form or size of stitch used.
- a suitable knitting machine for production of a sock according to the present invention is one in which there is the capability of altering the length of all or some of the yarns fed (knitted or laid) into the knitted needles at each knitted course or at predetermined intervals during the knitting of the leg of the sock and/or varying the feed pattern for yarns.
- a particular yarn may be fed into ,the needles at every course, every second course, or not at all (varying the yarn course density).
- Knitting machines may have cylinders varying in diameter from approximately 2) inches (6 cm) to approximately 6 inches (15.2 cm) and may have a number of needles varying from 36 to 280.
- Fabric construction may be plain knit (also known as single jersey), rib knit or jacquard knit.
- Sock construction may include a heel pocket knitted by a reciprocating action, or it may be of a "tube" type without such heel product and with or without yarn knitted or laid into the tube fabric to form a heel patch.
- Knitting yarns employed in the production of the sock may be any of those commonly used in the present art. Such yarns may be spun from the following fibres: cotton, wool, acrylic, polyamide, polyester, regenerated cellulose or may be continuous filament yarns of the following types: polyamide, polyester, regenerated cellulose, spandex (segmented polyurethane), rubber (natural or synthetic).
- knitting may be performed from any mixtures of any two or more of any of the above mentioned fibres or continuous filaments in the form of blended mixtures, twisted mixtures or as core-spun yarns or wrapped fibres or filament yarns.
- This invention particularly concerns the leg portion of the sock, the knitting of the leg and the setting of the leg fabric.
- the knitting of the heel, foot and toe is performed according to the chosen design of sock, and according to known art. Following completion of knitting the toe opening (if present) is closed by any of the present available means.
- a sock it is an optional current practice to place a sock, if it contains some fibre which can be plasticized by heat and steam on a flat metal former of a shape a little larger than that of the sock in a flat relaxed state. Socks fitted to former are placed in an autoclave and subjected to steam pressure, or in other vessels and subjected to heat, in order to achieve a moulding and setting of the sock fabric and thus a certain shape to the sock. Depending on whether this is done before or after scouring and dyeing it is known as pre-boarding or post-boarding respectively.
- the sock shown in Figure 2 is knitted on a 3-feed Komet TJ2 knitting machine also having for-each diameter N176 needles.
- the sock has in the leg portion between the lines A and G, a fabric construction of 1 x 1 rib type. Characteristics of the fabric in the respective sections of the leg portion of the sock (to fit size range as specified in Example 2), are shown in the following table.
- the required variation in fabric-to-leg pressure is obtained by varying the number of courses of 235 dtex Spandex relative to the total number of courses in the respective sections of the sock.
- This sock provides comfortable fit without skin irritation and will resist slipping down the leg of 90% of that population of wearers for which it was designed.
- Knitting Machine in this example is an Esta, Model JU3 with 4 inch cylinder diameter and having 176 needles.
- This sock provides comfortable fit without skin irritation and will resist slipping down the leg of over 90% of that population of wearers for which it was designed.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Socks And Pantyhose (AREA)
Abstract
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU1294/79 | 1979-11-12 | ||
AUPE129479 | 1979-11-12 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0039707A1 EP0039707A1 (fr) | 1981-11-18 |
EP0039707A4 EP0039707A4 (fr) | 1982-03-29 |
EP0039707B1 true EP0039707B1 (fr) | 1986-10-15 |
EP0039707B2 EP0039707B2 (fr) | 1993-09-29 |
Family
ID=3768330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80902163A Expired - Lifetime EP0039707B2 (fr) | 1979-11-12 | 1980-11-11 | Chaussette tricotee amelioree |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0039707B2 (fr) |
JP (1) | JPH0235042B2 (fr) |
CA (1) | CA1156002A (fr) |
DE (1) | DE3071800D1 (fr) |
IT (1) | IT1134234B (fr) |
NZ (1) | NZ195521A (fr) |
WO (1) | WO1981001425A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58169501A (ja) * | 1982-03-25 | 1983-10-06 | 鷲尾 邦夫 | 下衣ニツト製品の製造方法 |
JPH0619521Y2 (ja) * | 1989-01-27 | 1994-05-25 | 株式会社モンド | 靴 下 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2441443A (en) * | 1942-07-29 | 1948-05-11 | Surgical Products Inc | Elastic garment |
AU247125B2 (en) * | 1960-07-25 | 1963-09-19 | The Kendal Company | Improvements inelastic garments |
US3098369A (en) * | 1961-12-01 | 1963-07-23 | Burlington Industries Inc | Compressive stocking |
AU407883B2 (en) * | 1964-09-07 | 1970-11-10 | Kayser Roth Corporation | Seamless support stocking |
US3250092A (en) * | 1965-01-25 | 1966-05-10 | Kayser Roth Corp | Method of knitting ladies seamless support stocking |
US3392553A (en) * | 1965-03-30 | 1968-07-16 | Burlington Industries Inc | Stay-up stocking |
GB1146726A (en) * | 1965-09-13 | 1969-03-26 | Monsanto Co | Knitted stocking and process and apparatus for making the same |
US3386270A (en) * | 1966-04-18 | 1968-06-04 | Alamance Ind Inc | Man's support sock and method of forming same |
AU409306B1 (en) * | 1966-04-27 | 1970-12-18 | Kayser-Roth Corporation | Method of knitting ladies seamless support stockings |
CH489649A (de) † | 1967-07-17 | 1970-04-30 | Falke Rohen Fa Franz | Strumpf, insbesondere Herrenstrumpf, sowie Verfahren und Strickmaschine zu dessen Herstellung |
US3889494A (en) * | 1970-11-23 | 1975-06-17 | Kendall & Co | Stocking with compensated knee pressure |
AU525836B2 (en) * | 1977-05-10 | 1982-12-02 | Pacific Dunlop Ltd. | Sock |
-
1980
- 1980-11-07 CA CA000364203A patent/CA1156002A/fr not_active Expired
- 1980-11-11 DE DE8080902163T patent/DE3071800D1/de not_active Expired
- 1980-11-11 NZ NZ195521A patent/NZ195521A/xx unknown
- 1980-11-11 JP JP55502541A patent/JPH0235042B2/ja not_active Expired - Lifetime
- 1980-11-11 EP EP80902163A patent/EP0039707B2/fr not_active Expired - Lifetime
- 1980-11-11 WO PCT/AU1980/000085 patent/WO1981001425A1/fr active IP Right Grant
- 1980-11-12 IT IT25922/80A patent/IT1134234B/it active
Also Published As
Publication number | Publication date |
---|---|
CA1156002A (fr) | 1983-11-01 |
EP0039707B2 (fr) | 1993-09-29 |
EP0039707A1 (fr) | 1981-11-18 |
NZ195521A (en) | 1983-07-15 |
DE3071800D1 (en) | 1986-11-20 |
JPS56501684A (fr) | 1981-11-19 |
EP0039707A4 (fr) | 1982-03-29 |
IT1134234B (it) | 1986-08-13 |
IT8025922A0 (it) | 1980-11-12 |
JPH0235042B2 (fr) | 1990-08-08 |
WO1981001425A1 (fr) | 1981-05-28 |
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