US1968832A

US1968832A - Surgical stocking heel construction

Info

Publication number: US1968832A
Application number: US650712A
Authority: US
Inventors: Edward C Hinchliff
Original assignee: BURSON KNITTING Co
Current assignee: BURSON KNITTING Co
Priority date: 1933-01-07
Filing date: 1933-01-07
Publication date: 1934-08-07
Anticipated expiration: 1951-08-07

Description

Aug. 7, 1934. k E. c.4HlNc|-|L.|FF 1,968,8*32

SURGICAL STOCKING HEEL -CONSTRUCTION Filed Jan. 7. 1933 2 Sheets-Sheet 1 Aug' 7 1934- E. c. HlNcHLu-'F 1,968,832

SURGICAL STOGKING HEEL CONSTRUCTION Filed Jan. '7. 1933 2 Sheets-Sheet 2 Patented ug. 7, 1934 SURGICAL sTocKINo HEELcoNsTRUcTIoN Edward c.' Hinehliff, Rockford, 1u., assigner to Burson Knitting Company, Rockford, lll., a corporation of Illinois g 1933, `Serial No. 650,712

Application January 7,

This invention relates to a new and improved surgical stocking.

Surgical stockings of the type intended to be k worn under `ordinary stockings are knit without iitoe and heel; VWhere anordinary V-shaped heel opening is provided there is too much likelihood of Wrinkling across `the instep,tothe discomfort of the wearer, and also a tendencyto place destructive strain upon Vthe fabric `across the inner '10'- end of theopening.l It is, therefore, the object of rnyinvention to providea stocking havingan improved heelconstruction.Y In this heel construction the opening is" ofsuch a form` that wrinkling4 acrossthe instep is avoided and strain of the fabric at the ,innerr end of the opening is materially reduced, the opening being furthermore reinforced on all sides so as to properly take care of what stresses are set up.

The invention will be better understood asV '20reference ismadewin the following description -to the accompanying drawings, whereinl Figure lis a side view showing a stocking'made in accordance with my invention, as applied to the leg of a wearer;

Fig. 2 is a perspective view of the lower portion of Figure l to better disclose the heel construction and the form it takes on the foot;

Fig. 3`is a view of the stocking removed and-laid out nat;

of itsrproduction, as it comesfromtheknitting machine; i

Figs. 5, 6'and 7 are perspective views ofthe lower end'ofthe stocking showing three vfurther Astages -'in the production, the stocking being turned inside out in each of these views, which is incidental to working upon it, Fig. 7 showing the fnishedform prior to` turning the stocking right side out, and l Figs. 8 and 9 are sections on the correspondingly numbered lines of Fig. '7.

`The same reference numeralsareapplied to course, to be used as a toe portion, although ,it Vis of a similar form, but is used as a place for corresponding partsthroughout the views.

Referring rst to Figs. 1-3, `the stocking of my invention comprises a leg portion'lO and `foot portion l1 of any suitableV elastic fabric, but preferably one knit throughout vof elastic yarn, that is to say, with the elasticlyarn used as the stitchV forming yarn.l The yarn used is preferyably` like that known as Lastex, which consists of a Vfine rubber core with a fibrous covering, usually of one or morestrands of silk wound helically upon the core. A hem is formed at the I top as at 12 and at the bottom as at 13, the stock# ing being of a type without a toe andintended to Fig. 4 is a view of the stocking in lthe first stage reach up to the knee, and worn under an ordinary stocking, simply for support purposes. The heel is also open, an opening 14 being provided opposite the instep portion 15. It will be observedV that instead of the customary V-shaped heel opening, I have provided what may be termed a Ushaped opening, inasmuch as there is a predetermined'length of fabric at 16 at the inner end of the opening, between the upper and lower edges of the opening. This shaped opening is of two-fold advantage: It eliminates the tendency for wrinkling across the instep, and avoids the setting up of destructive strains in the fabric across the inner end of the heel opening. The length of fabric at 16 across the inner end of the opening is capable of stretching, easily within the limit of elasticity, to compensate for the angularity of the foot portion l1 relative to the leg portion 10 in the wearing of the stocking, so that there is no danger of tearing. With a V opening, as distinguished from the U opening herein shown, there is no length of fabric across the inner end of theopening to afford the give, and all of the strain comes upon one or two courses of elastic yarn at that point with the result that the fabric tears. Aside from the fact that the U opening prevents destructive strains, it also avoids wrinkling across the instep by affording suflicient give in the regions at opposite sides of the instep, adjacent the inner end of the heel opening, so that the instep portion l5 will lie fiat and not bunch up in the crowding of surplus fabricin that area. In the following description of the manufacture of the stockingV of my invention, 1 shall point out in v particular how the heel is reinforced on all sides of theV heel opening so as to give increased durability. Y

Referring to Fig. 4, the stocking is knit on a straight, double bank knitting machine starting withv a set-up at the lower end at 17 to knit` an end extension 18 using cotton Vor other'cheap yarn. This `extension is not, of

tensioning rollers to grip the end of the stocking at the Ybeginning of the knitting. InV

knitting the extension there is widening up to the line'19' for the full width of the foot portion l1. The knitting is continued a short distance beyond the line 19 with the cotton yarn, as indicated at 20, to the line 2l at which point another yarn carrier is thrown in to knit with the elastic yarn. The foot portion 11 is knit by. round and round knitting upto the line 22, the carrier for the elastic yarn being thrown out and the other yarn carrier being thrown in to knit a complete course 23 with cotton yarn and approximately a half course 24 of the same yarn. The

courses

23 and 24 are simply marks in the knitting for guidance in subsequent operations where looping operations are involved, as will be described later. The needles for the instep portion are held out and the rest of the needles are used 'to knit an extension 25 with elastic yarn, a false heel 26 of cotton or other cheap yarn, and another extension 27 similar to the extension 25, which brings us to the line 28 indicated in the drawings. Then the needles for the instep portion 15 are thrown into operation while the other needles are held out, and the instep portion is knitted until the line 28 is reached, Whereupon all of the needles are used to knit the leg 10 by round and round knitting. With this construction, I secure selvage edges at the inner ends of the heel opening 14. Additional needles are thrown in at one end of the bed for the widening at the calf, indicated at 29. An approximately half course 30 of cotton yarn is knit on the ankle to produce a line similar to that appearing at 24, and a complete course 31 of cotton yarn is knit to produce another line near the top similar to the line 23. Knitting with the elastic yarn is carried to the line 32, at which point the other carrier is thrown in and a short extension 33 is knit with the other cheaper inelastic yarn. The completed stocking blank is then removed from the machine in the form appearing in Fig. 4.

The stocking blank is cut on the

lines

19 and 34, to leave only the extension on the toe and to form two tabs 35 and 36 (Fig. 5) from the false heel 26. The stocking is then turned inside out to the form appearing in Fig. 5. The

extensions

20 and 33 and the tabs 35 and 36 are intended Simply to be used in connection with looping operations at the toe, top, and heel portions, respectively. The top hem 12 is produced in a looping operation on a circular looping machine, the leg being applied to the points of said machine first on the line 3l and the fabric being then folded on the line 37 to permit entering the points on the line 32, whereupon the extension 33 is unraveled and the hem completed, using an elastic yarn for the looping stitches. In a similar manner the hem 13 is produced at the other end of the stocking. This leaves only the heel to be completed.

The first operation in completing the heel consists in placing either the foot or ankle portion on the points of a circular machine on the line 24 or 3G, as the case may be, and then folding the extension or 27 so as to enter the points in the end of the extension. The tabs and 36 are unraveled after the extensions have been placed on the points and the looping stitches are made with elastic yarn corresponding to the yarn used in the knitting of the stocking, as indicated at 38 and 39. Elastic yarn is used in these places and also on the

hems

12 and 13 so that these parts will give with the rest of the fabric. After the

extensions

25 and 27 have been fastened, as appears in Fig. 6, two more looping operations are performed on a circular machine on the lines 4i) and 4l, using in this case, however, a nonelastic yarn, and preferably a two-strand yarn, in order that as much reinforcement will be built into the stocking at these points as possible. The looping stitches allow for a certain amount of extension so that there will be give along the inner ends of the heel opening in the portion 16,

but the give is positively limited due to the nonelastic yarn, so that no destructive strains can be set up in the elastic fabric in those regions. In other words, the stretching is kept well within the limit of elasticity of the elastic yarn. It will be observed in Fig. 9 that in the looping of the ends of the

tabs

25 and 27 the selva-ge edges of the fabric at the ends of the opening are doubled as at 42 and 43 so as to make a uniform thickness of fabric on the lines and 4l and materially strengthen the fabric at the inner ends of the opening.

It will appear from the foregoing description that the heel, in accordance with my invention, is reinforced on all sides of the opening but in such a way that the desired amount of give is still present cross the angle, the instep, and across the bottom of the foot. The reinforcement is also incorporated in such a way that those portions vvhere too much stretching is apt to occur have the stretch positively limited by non-elastic yarn, namely, across the inner ends of the heel opening.

I claim:v

1. In an elastic surgical stocking knit without a heel so as to provide a substantially rectangular heel opening opposite the instep portion, reinforcements for the elastic fabric of the stocking at the heel opening, comprising elastic means extending across the top and bottom edges of the opening so as to give with the fabric of the instep portion, and non-elastic means extending lengthwise of the edges of the fabric on the opposite sides of the opening to limit the give of the fabric in those regions.

2. In an elastic surgical stocking knit without a heel so as to provide a substantially rectangular heel opening opposite the instep portion, reinforcements for the elastic fabric of the stocking at the heel opening, comprising non-elastic means extending lengthwise of the edges of the fabric on the opposite sides of the opening to limit the give of the fabric in those regions.

3. In an elastic surgical stocking, a leg portion and a foot portion, a heel having an opening, an instep portion opposite the latter, and reinforcements for the elastic fabric of the stocking at the opening, comprising elastic means extending across the top and bottom edges of the opening so as to give with the fabric of the instep portion, and non-elastic means extending across opposite ends of the opening to limit the give of the fabric in those regions.

4. In an elastic surgical stocking, a leg portion and a foot portion, a heel having an opening, an instep portion opposite the latter, and reinforcements for the elastic fabric of the stocking at the opening, comprising non-elastic means extending across opposite ends of the opening to limit the give of the fabric in those regions.

5. In an elastic surgical stocking, a leg portion and a foot portion of elastic fabric, a heel having an opening, the top and bottom edges of which are defined by overlaid fabric stitched in place so as to serve as reinforcements adapted to give with the rest of the fabric, and welts of non-elastic thread sewed to the fabric across opposite ends of the opening and serving as reinforcements adapted to limit the give of the fabric in those regions.

6. In an elastic surgical stocking, a leg portion and a foot portion of elastic fabric, a heel 'having an opening, the top and bottom edges of which are defined by overlaid fabric stitched in place so as to serve as reinforcements adapted to give with the rest of the fabric, the opening being rectangu- 159 lar so as to provide substantially parallel ends, the latter being defined by doubled over edges of the fabric stitched in place with welts formed of non-elastic yarn whereby to provide reinforcements adapted to limit the give of the fabric in those regions. Y

7. In an elastic stocking comprising leg and foot portions of elastic fabric, a heel provided with a four sided opening, the inner edges of the opening being elongated in the direction of the length of the stocking leg.

8. A stocking as set forth in claim l'I including reinforcing welts defining the inner edges of the opening and serving to positively limit stretch of the fabric in a direction parallel to the welts.

9. A stocking as set forth in claim 7 including reinforcing elastic hems defining the top and bottom edges of the opening and adapted to stretch with the adjacent fabric of the leg and foot portions.

10. A stocking as set forth in claim 7 including y extensions from the leg and foot portions of elastic fabric forming reinforcing hems across the top and bottom edges of the opening, the same being fastened so as to give with the elastic fabric of the leg and f oot portions, and semi-elastic Welts defining the inner edges of the opening on op posite sides of the foot portion, the same being adapted to give only to a predetermined extent so as to limit the give of the elastic fabric in those regions.

11. In an elastic stocking comprising leg and foot portions of elastic fabric, a heel provided with a four sided opening, the inner edges of which are elongated in the direction of the length of the stocking leg and formed by longitudinal wales in the knitting of the stocking.

12. A stocking as set forth in claim 1l, wherein the inner edges of the opening are doubled to form reinforcing welts serving to limit stretch of the fabric in a direction parallel to the Welts.

EDWARD C. HINCHLIFF.