US1820868A - Tie cord - Google Patents

Description

ug. 25, 1931. B, B, EPsTElN '1,820,868

TIE CORD Filed March 2, 1931 INVENTOR wnNl-:ssEs eyagm Epsem @gw @Mw 40 ne the actual scope thereof.

45 Figure 2 is Patented Aug. 25, l1931 UNITED y sTATEs PATENT OFFICE BENJAMIN B. EPSTEIN, OF BROOKLYN, NEW YORK, ASSIGNOB, T THE LEES MANU- FACTUBING COHPANY, 0l' NEW YOBI, N. Y., A CORPORATION OFCONNECTICU T 'rm conn This invention relates generally to cordage, and has particular reference toA an improved construction of a decorative tie cord and method of producing the same, by virtue of which tie cords having various decorative effects may be obtained by combining the severalfelements in different ways.

Tie cords of this general nature which are used for various purposes, such as the tying of holida 'ft packa es, in the packaging w of candesyaiid other cofections and the like, must possess suilicient tensile strength to ac-4 complish their4 linitial purpose of tying the package, as well as servlng as a decoration.` It is, therefore, the principal object of the present invention to produce an improved tie cord of this nature, in which certain elements thereof combine to offer a uniform resistance to the pulling strains' or stresses exerted '.20 thereon.

' More particularly, the invention resides in an improved tie cord of the indicated character which possesses the requisite tensile strength due to the fact that certain elements of the cord, although of different characters ormaterials, have approximately the same degree of elasticity, thereby combining to simultaneously offer their united strength when placed under tension.

3o Other objects of the invention reside in the comparative simplicity of` construction of the cord, the economy with which it may be produced and the general eiciency derived therefrom.

With the above recited and other objects in view, reference is had to the following description and accompanying drawings, in which there-'are illustrated-several embodiments'of the invention while the claims de- In the drawings:

Figure 1 is aside 'view of a le h of tie cord constructed in accordance wit the invention. .y Y

an enlarged transverse sectional view therethrough taken' approximatly on the line indicated at 2-2 1n Figure Figure is a view similar to Figure 1, illus- 60 trating in modified' form the invention.

in the Figure 4 is an enlar ed transverse sectional view therethrough ta en approximately on the line 4-4- of Figure 3.

Referring to the drawings by characters of reference, A designates generally what wlll be termed the core of the tie cord, which 1s made up of a number of strands 5 of a sultable inexpensive material, such as cotton l yarn. The core A has a covering designated generally by the reference character B, which consists of a number of strands 6 of a more expensive material, such as rayon. The tie cord further includes a binding designated generall by the reference character C, which i orm of the invention illustrated in Figures 1 and 2 is made up of a number of strands 7 of a suitable material, such as rayon.

In the -form of the invention illustrated in Figures 3 and 4, the bindin which is designated enerally by the re erence character D, is (isclosed as a flat ribbon of tinsel or any equivalent material, which may be embossed or otherwise treated to rovide a surface decoration or ornamentation designated by the reference character 8.

Ineither form, the core and its covering are of different materials and are twisted in y the same direction, while the binding is spirally twisted about thesaid core and its covering in an opposite direction so that the covering strands 'are puffed up and away from the core strands and maintained in this condition by the binding, to give a peculiar bulky appearance to the portions of the core covering which lic between the convolutions of the binding without the necessity of-employing'a great amount of mate. rial. This produces an attractive decorative or ornamental tie cord, in which the core covering and the binding may be of 4contrasting colors or shades.

Due to the vfact that the rayon binding C or ribbon tinsel bindin D ordinarily possesses an inherently di erent de ee of elasticity with respect to the core it follows thatunless the elasticit of these elements is rendered approximate y equal, strains or st exerted thereon will tend to cause the binding, which is usually the weaker of 10 the two, to break ahead of the cord. It is, therefore, important to overcome this condition in order that the binding and the core may offer their uniform strength when placed under tension and, hence, the elasticity of one or the other is increased or decreased or both are treated so as to render-'them of approximately the same degree of lasticity during their incorporation in the tie cord structure.

The method of roducing the tie cord includes the steps ci) twisting together, in the same direction, the strands of the core and simultaneously applying at an angle the covering during the twisting of the core strands together,'"the core'strands being f ed` `underfa tension to reduce their elasticity to the desired degree. The binding is then applied by helically winding the same in an opposite direction to the direction of the twist of the core and binding strands. During the applicationof the binding, the covered core is subjected to an additional tension while the binding is placed under a suicient tension to equalize the elasticity of the core and binding in the finished product. While the binding is being applied and twisted in an opposite direction to that of the twist of the core and its covering, thecovering and core are caused to slightly untwist and thus -cause the covering strands which are more resilient than the core Strands to puff up about the core between the convolutions of the binding whereby the puffed up portion is bulkier than the periphery of the core and the outer periphery of the helix forming the binding, while said puffed up portion still retains a substantially solid appearance to conceal the core. The method thus `described may, of course, be varied and the equalization of the elasticity of the core and binding may be otherwise accomplished to attain the end in I view, namely, that of producing a'tie cord of this character in lwhich both the core and binding have approximately the same breaking point.

In use, when a pull is exerted on the cord in tying, the binding grips about the core and its covering and due to the approximate equalization of the elasticity of the binding and core, a uniform resistance is offered to the ulling stresses and strains so that the maximum tensile strength is obtained. It, therefore, follows that the core and binding will break ata proximately the same time when the brea ing point of the cord.A is reached.

From the foregoing, it will thus be seen that a decorative tie cord has been devised which in.addition to possessing the ornamental or decorative qual-ities set forth, possesses the necessary or requisite tensile strength while permitting-of its production at a minimum cost. I

rWhat is claimed is :`l

1. A decorative tie cord including a core,

a covering therefor twisted with the core in the same direction and a binding spirally twisted about said core and covering whereby the covering is expanded or puffed away from the core and maintained by the binding.

2. A tie cord including a stranded` core .and

rial from the core spirally twisted about said core and its covering in anopposite direction whereby the covering is expanded or puffed away from the core and-maintained by the binding, the said core and binding having substantially the same degree of elasticity.

4. A tie cord including a stranded core and a stranded covering thereforsaid core and covering strands being twisted in the same direction and a binding extending'helically about said core and its covering andI pitched in an opposite direction with the covering strands pued away from the core strands between the convolutions of the binding and thus maintained by the bindin 5. A decorative tieI cord inclu ing a stranded core and a stranded covering therefor, said core and covering strands being twisted in the same direction and a bindinghaving an inherently different degree of elasticity from the core treated to render the same of the same elasticity said binding being spirally twisted about the core and its covering in an opposite direction whereby the covering strands are puffed away from the core strands and thus maintained by the binding. v

6. A method'of producing a tie cord of the character set forth includmg the steps of twisting together, in the same direction the strands of a stranded core and the strands of a stranded covering and applying afbindingV helically around said covered core 1n' an opposite direction to the direction of the twistv .of the core and binding strands whereby said covering strands are expanded orf ued away from the core between the convo utionsv of the binding.

7. A method character set forth including the steps of twisting together, in the same direction,'the strands of a stranded core and the strands-of helically around said covered lcore inan -opposite directionito the direction of the twist o f the core and binding strands and feeding the binding under a lesser tension than the flan of producing a tie cordof the feeding tensin of the core and covering. strands and effecting an untwisting of the core and covering strands to a limited degree and causingxthecovering strands to expand s or puff up a utthe core between the convolutions of the binding.

8. A method of producing a decorative tying cord of the character set forth including the steps of equalizing the elasticity of core l. and binding elements having inherently different degrees of elasticity, twisting together, in the same direction, the' strands of the stranded core and the strands of a stranded covering and applying the binding helically u around said covered core in an oppositieJ direction to the direction of the twist of the core and binding strands.

9. A method of producing a decorative tying cord of the character set forth includn ing the steps of equalizing the elasticity of core and binding elements having inherently different degrees of elasticity, twisting together, in the v4same direction, the strands of the stranded core and the strands of a strand u ed covering and applying the binding helicall around said covered core in an opposite direction to the direction of the twist of the core and binding strands and feeding said binding under a lesser tension than the core f 3. and coverin strands.

10. A met od of producing a tie cord of the character set forth including the steps of twisting together the strands of the stranded core, applying a stranded covering helically around said core with the convolutions pitched in the direction of the twist of the core, and applying a binding helically around said covered core and lpitched in the opposite direction to the direction of the twist of the core andbinding strands, tensioning said core and binding to e ualize the elasticity thereof4 and releasing sai tension to permit the binding to backtwist a limited degree for causing the covering strands to expand or puf up about the core between the convolutions of the binding. 1

,- BENJAMIN B. EPSTEIN.

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