Buckles – buttons – clasps – etc. – Plural fasteners having intermediate flaccid connector – Elastic connector
Patent
1993-12-02
1995-10-17
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Plural fasteners having intermediate flaccid connector
Elastic connector
24712, 2237, A41F 900, D04D 900
Patent
active
054578540
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a draw-cord and to methods of incorporating it within a tunnel of flexible sheet material.
Draw-cords are found in many situations, for example around openings defining the wearer-encircling portions of many garments such as activewear, sports shorts, swimming trunks, leisure trousers, pyjamas, pullovers, anoraks and the like, and in providing means for closing the neck region of bags eg. shoe bags. Such cords may be extensible or substantially non-extensible and, for use in garments are commonly knitted, woven, braided or knit-braided construction. The incorporation of draw-cords by known manufacturing methods in a particular garment requires that the draw-cord be longer than the wearer-encircling portion in normal circumstances, so that in use the opposite ends of the draw-cord can be tied together or, where the ends of the cord are secured e.g. in a waist-band seam, a loop of cord can be pulled through a hole in a waist-band region and knotted. In one known method of incorporating a draw-cord in a hem tunnel around a garment opening, the hem tunnel is first formed and the draw-cord thereafter threaded into the pre-formed tunnel, allowing introduction of the extra length of draw-cord required in relation to the fabric; this process is somewhat cumbersome because it requires the threading of the draw-cord into the pre-formed hem tunnel.
Draw-cords provided within an elastic band which is to be attached to a fabric (so-called "draw-cord elastic") are also known and used extensively, for example as disclosed in GB 1406821. Whilst such cord assemblies are convenient from the point of insertion, and permit both draw-cord and elastic to be incorporated simultaneously as the hem tunnel is formed, relatively large stock-holding of draw-cord elastic may be needed in view of the need to change the type of elastic draw-cord to suit the current fashion trends. Furthermore, this method of insertion only permits insertion of a length of draw-cord which is dependent on the extension of the associated elastic band. For example the elastic band could be made at 160% extension and would include an equal length of draw-cord in its extended state, i.e. in its manufactured fully extended state the elastic could, for example, be 260 cm long and would include 260 cm of draw-cord; relaxed the elastic would be 100 cm long but still containing 260 cm of cord which could be drawn out. Inserted in a waist-band, partially extended, the fully extended waist-band length could be 180 cm, having an excess 80 cm of draw-cord. The excess length of draw-cord is thus fixed at manufacture.
In one aspect the invention may be considered to provide a draw-cord assembly comprising a draw-cord which is extensible from a retracted condition to an extended condition, in combination with restraining means comprising a substantially inextensible core within the cord adapted to maintain the said draw-cord temporarily in its retracted condition until the restraining means is rendered ineffective thus permitting the extension of the draw-cord.
In another aspect the invention may be considered to provide a method of assembling a draw-cord with a piece of flexible sheet material, said method comprising the steps of progressively feeding the sheet material and a draw-cord in accordance with the invention in its retracted condition into operating instrumentalities at the same rate, said operating instrumentalities forming a hem tunnel on the sheet material with the draw-cord therein, and thereafter rendering the restraining means ineffective thus permitting the draw-cord to be permanently extended from its retracted condition.
Although the restraining means may be rendered ineffective immediately after incorporation of the draw-cord in the hem tunnel, this step may be delayed until later in the garment making operation, if desired.
Various embodiments of the invention will now be described with reference to the following drawings, to illustrate the invention by way of example.
In the accompanying drawings:
FIG. 1 is a diagrammatic
REFERENCES:
patent: 2721331 (1955-10-01), Scheitlin
patent: 2751599 (1956-06-01), Peterson
patent: 2854670 (1958-10-01), Naccash
patent: 3559213 (1971-02-01), Goodman
patent: 3581353 (1971-06-01), Sonntag
patent: 3887968 (1975-06-01), Lynam
patent: 4694541 (1987-09-01), Skyba
Automatic Braiding Limited
Sakran Victor N.
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