US1837616A - Manufacture of stockings - Google Patents

Description

' Dec. 22, 1931. L. H. GREENWALD I 1,837,616

MANUFACTURE OF STOCKINGS 2 Sheets-Sheet 1 Filed Aug. 23, 19:50

INVENTOR Law/0110917 Gre /2 1 BY (41w wrhd,

ATTORNEYS Patented Dec. 22, 1931 V UNITED STATES AWRE CE H. ennnnwenn, or nnw yon NZ'Y. I

. mnnur'eorunn or sroexmes Application filed August 23, 1930.. Serial No. 477,271.

This invention relates to a process and a means for carrylng out a process of drylng stockings during the knitting operation.

7 As is well understood, when knitting silk it is essential to have the yarn wet in order to make it pliable to make a good stitch thereby preventing what is usually referred to as sleaziness. However, if the silkistoo wet it will be stretched when the material is 31.1 drawn off thereby greatly distorting the stitches which will maintain this distorted condition whendried, and will cause sleazi ness in the stocking when' the fabric is stretched on the form and pressed.

The usual practice is ;to have-the silk just wet enough to form a good stitch anddry enough to reel withoutany markeddistortion. The first condition that the silk be wet enough can be taken care of by usingan artificial moistening means. In the present practice, if the silk is freshly humidified. to the required extent to produce agood stitch the resultant fabric is uniform only when the weather is fairly warm and. the air dry; When there is a great deal of moisture in the air the silk runs too wet and the woven fabric stretches. When the air is very dry the yarn may not be sufiiciently moist and the stockings will be knitted irregularlydue to the lack of moisture in the silk. In either case the merchandise produced is unsatisfactory.

The ideal condition is to have the silk wet at the point of knitting and drythereafter. If this is accomplished the fabric somade when removed from the machine is practically the same shape as it will be when it is dyed, shaped and finished. There will be no distortion of the fabric during subsequent operations.

By the ordinary method it is customary, after the knitting has been completed, to dry the legs before the feet are put on them but if the fabric is treated according to my invention this extra drying operation will not be necessary, neither will it be necessary to dry the feet by an extra drying, operation before looping if the footers are also equippedwith my device.

Legs made by the ordinary process have heavily curled selvage's. These are :larly diflicult to seam, the heavily curled selvage causing aheavy and uneven seam. f

Among the objects of my invention is the process of drying a stocking fabric as it-"is fi fi being knitted so that all the objectionable features above set forth will be prevented. I Another object is the provision of means 1 for carrying out this process.

' In the accompanying drawings I have 51 shown one form of mechanism by which my process may be carriedout- Otherobjects of my invention will appear from consideration of the following description taken inconneo' tion with the drawings, in which j j Fig. 1 is a cross section of a portion of a standard knitting machine; I Fig. 2 is a perspective view of a suitable heating bar,

' Fig. 8 is a part sectional .side vieiw of tli e heating bar; and V. p Fig. et is a cross section on the lined-4: of Fig. 3.

In Fig. 1 I have shown-a. cross section of a small portion of a knitting machine known ,7? r

in the trade as the R eading machine. in whichthere are disclosed only those features necessary to explain ,this inventionl The needle bar is shown at A, Fig. 1, and is operated by the needle bar lever B intheusual manner. The fabric is knitted at the point indicated at C known as the knitting field, after which it is drawnacross draw-off bridges D by take-oft reelE which places the fabric under suitabletension-which may; in certain machines,'be automatically varied as different sections of the fabric are knitted. The usual practice is to moisten the yarn to produce a uniform fabric and to depend upon atmospheric conditions to dry the ,knit- 4 ted fabric at least tofa certain degreeas it is being drawn off by. thetake-ofi reel E, and later to permit it todryin the atmosphere for subsequentoperations. The result of this process is usually a'fabricwhich has been considerably elongated and narrowed bythe constant tension on it 'produced'by thetake off reel The edges ofthis fabric are curled inwardly into. several convolutionsi and the loops of the fabric are elongated and, naiv rowed as shown 'in Fig. 9. hen the fabric I produced this way is put on'the former and shaped the stitches will be pulled uneven,

this unevenness beingcaused by th'e fact that the loops have to be considerably widened and as aresult' will 'be distorted as the width ofthe fabric is increased by stretching. This produces-sieaziness, which-is an objectionable feature as is well understood. w a

In order to avoid this condition I have provided a heating bar F, Figs. 1,2, 3 and r 4, which 1- preferably provide with two arms G, Figs. 1 and 2, which are pivoted upon af rod H suitably supported-inbracket-s I which in turn are suitably secured to the front bed or table J ,-''F ig. 1. Thepivotal connection is provided so that the heating bar F may he i lowered; when desired for'purposes of facili- .to the shaft H.

tatingrepairs on the machine." The heating bar Fispreferably he'ld in'position close to the fabric by 'meansof the weight'Ksecured "The heating bar 'may consist of: elec: trical heating units M, and the current supply for these units may be obtained from the house supply through wire connections as.

indicated. 7 T he two heating units'M of each drying barF'areI preferably spaced and the uppe'rfsurface of the bar F is depressed, as shown at N, Figs. 2 and 8, to clear the drawoffbridges 1) between the corresponding adfabric produced according to my process is 'num which may be provided with depending slotted lugs P so that the bar may be adjustably secured on thegarms G to regulate'the position of the barwith respect to the fabric.v

It is obvious of course that in carrying out this process other heating units or drying bars could be employed, such for instance as steam drying units or the like. In all cases it is essential to locate the bar as close to the knitting field at the point C as is possible." This isgfor the purpose of drying the fabric shortly after it is knitted so that the by the :loops of thefabric may become set drying process as soon as possible,

A fabric produced on a knitting machine on which my heating bar has been applied will be considerably shorter and'considerably widergthan the fabric produced according to While I have described my new process and one means by which the process may be carried out it is to be understood that this process may be carried out by other means, and that I intend to cover all equivalent processes and mechanisms falling within the scope of't he claims, I V a i What is claimed is: i

the 'fabric'from the knitting field over drawoffbridges between the sections of the machine, of a drying element cooperating with a plurality of sections mounted for movement toward. andaway from the lower face ofthe fabric, said drying element being depressed centrally opposite said draw-ofl'tbridges to permit ofniovement into close proximity to said fabric. f

1 2. The combination ting machine for simultaneously k-nittinga with a sectional knit-V '1. ,The combination with a sectional knit ting machinefor simultaneously knitting a "plurality of fabrics from moist silk yarn and provided with the usual means for drawing 7 plurality of fabrics from moistyarn'and provided with the usual means for drawing the fabric from the knitting field over drawoff bridgesbetween the sections of the machine,wof a drying element comprising a bar extendingjover a plurality of sections, and heating units carried by said bar and located on opposite sides of the draw-offobridg-es in the path of said bar; 7

7 3. The combination with a sectional knittingmachine for simultaneously knitting a plurality of fabrics from moist silk'yarn and provided withtheusual means for drawing the fabric from the knitting field overdrawofi' bridges between the sections of themachlne, of a drying element comprising a ba-r extending-over. a plurality of sections, and

heating units carried by said bar and located I on opposite sides of the draw-offbridges'in the path of: said'bar, the bar'between said heating units being recessed to permit of loeating the bar in close proximity to the fabrics produced by adjacent sections;

In testimony whereof I havesigned name to this specification.

LAWRENCE H. GREE WALD.

the usual process. -The loops of this fabric will be considerably shorter and wider and the curls produced on the edges will have fewer convolutions,,thus facilitating uncurlin-g during the seaming process. I ,VVhen the V stretched'upon the former and pressed the loops will uniformly shorten and widen result ng in a fabric 1n which no s'leaziness appears. 7' m CERTIFICATE OF (JOIRRECTIUN;

Patent No. 1,837,616. Granted December 22, 1931, to

LAWRENCE H. GREENWALD.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 84, after "by" insert the article a; page 2, line 89, claim 2, after "moist" insert the word silk; and that the said Letters Patent should be read withthese corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 16th day of February, A. D. 1932.

M. J. Moore, Acting Commissioner of Patents.

(Seal)

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