U.S. patent number 3,657,757 [Application Number 05/062,796] was granted by the patent office on 1972-04-25 for vinyl boots, gloves or the like.
Invention is credited to Andre Vilder.
United States Patent |
3,657,757 |
Vilder |
April 25, 1972 |
VINYL BOOTS, GLOVES OR THE LIKE
Abstract
The disclosure described an improvement in the making of vinyl
moulded boots, gloves or the like: an elastic material, such as
cotton fiber, synthetic fiber or goring, is affixed to the vinyl
article by electronic welding thereby eliminating the need of
fasteners.
Inventors: |
Vilder; Andre (Montreal,
Quebec, CA) |
Family
ID: |
22044878 |
Appl.
No.: |
05/062,796 |
Filed: |
August 11, 1970 |
Current U.S.
Class: |
12/146C; 36/4;
2/168 |
Current CPC
Class: |
A43B
3/04 (20130101) |
Current International
Class: |
A43B
3/00 (20060101); A43B 3/04 (20060101); A43d
000/00 (); A43b 001/10 (); A41d 019/00 () |
Field of
Search: |
;2/169,168,167
;36/7.1,7.3,4,50,51 ;161/76,77,88 ;12/146C |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Claims
What is claimed is:
1. In a method of making an article of covering such as a boot,
glove or the like, made of vinyl, the steps which comprises first
applying a coating on edges of an elastic material made of cotton
fiber, and electronically welding said edges of the elastic
material to the vinyl material of the article once the coating is
dry.
2. In a method as defined in claim 1 wherein said coating has a
latex base.
3. In a method as defined in claim 1 wherein said coating has a
vinyl base.
4. A method of making an article of covering such as a boot, glove
or the like which comprises the steps of forming a vinyl moulded
article, electronically welding edges of an elastomeric fibrous
material to the vinyl moulded article, cutting the vinyl material
adjacent the welded edges, and removing the vinyl material so cut
within the edges.
5. A method as defined in claim 4 wherein said elastomeric fibrous
material is made of cotton, further comprising the step of applying
a coating, having a base selected from the group comprising latex
and vinyl, and letting said coating dry before welding.
6. A method as defined in claim 4 wherein the temperature range of
the welding step is between about 250.degree. F. and 350.degree.
F.
7. A method as defined in claim 4 wherein said elastomeric fibrous
material is made of synthetic fiber.
Description
This invention relates to an improvement in vinyl boots, gloves or
the like and, more particularly, to a method for making the
same.
In the case of vinyl boots made prior to the present invention,
some fastening device, such as a slide fastener, must be provided
on the side of the boot for almost the entire height thereof so
that the leg portion of the boot may be expanded to enable the
wearer's foot to reach the foot portion of the boot and then
restricted in order that the boot may take the shape of the leg.
However, attempts to manufacture a boot which would completely
follow the shape of the user's leg in a wrinkle-free fashion have
been largely unsuccessful.
Similar problems have been encountered in the glove art where it
has been difficult to manufacture a glove which would completely
fit the contour of the hand and arm of the user and would stay
without wrinkles while being worn.
The present invention overcomes the above-noted disadvantages by
providing to the boot (or to the glove) an elasticity which will
enable the insertion of the boot on the wearer's leg without the
aid of fastening devices to provide the desired wrinkle-free
effect. In order to achieve this, applicant has devised a method
whereby an elastic material is incorporated in a vinyl moulded
boot. The material preferably used is an extensible material known
in the art as "goring" or "finger goring;" any other extensible
material made of cotton or synthetic fiber may also be used. The
method consists in electronically welding in the elastic material
to the vinyl boot; no other methods, such as gluing or stitching,
has successfully secure the elastic material to the boot. Such a
boot made in accordance with the above method tightly fits the leg
of the user and will show the shape of the leg without leaving
wrinkles on the boot when it is worn. The elimination of slide
fasteners, or other types of fastening devices, enables the boot,
even before being worn, to ressemble more closely the shape of the
leg. For instance, that portion of the boot covering the ankle
portion is now made more restricted; this feature was practically
impossible to obtain on boots made up until now since a
sufficiently large area is needed at the ankle portion of the boot
to permit the passage of the wearer's foot therethrough. With the
present invention, a wrinkle-free thigh-boot, well proportioned to
the entire length of the wearer's leg, is now made possible.
Another advantage of the present invention is that the
incorporation of an elastic material in a vinyl moulded boot (or
glove) provides a great variety of decorative patterns which adds
to the design of the article, whether boot or glove.
A further advantage of the present invention is that the present
method improves and simplifies the mass production of boots and
gloves.
The present invention consists, in its broadest aspect, in a method
of making an article of covering such as a boot, glove or the like,
made of vinyl, comprising the step of electronically welding edges
of an elastic material, selected from the group comprising cotton
and synthetic fiber, to the vinyl material of the boot, glove or
the like.
In order that the invention may readily be understood, embodiments
thereof will now be described, by way of examples, with reference
to the accompanying drawings in which:
FIG. 1 is a side elevational view of a boot made in accordance with
the present invention;
FIG. 2 is an enlarged cross-sectional view taken along lines 2--2
of FIG. 1;
FIG. 3 is a side view illustrating a side portion of the boot
between two welding electrodes;
FIGS. 4 and 5 are side elevational views of different decorative
boots embodying the present invention; and
FIG. 6 is a top view illustrating a glove made in accordance with
the present invention.
Referring to the drawings wherein like reference characters
designate like or corresponding parts throughout, a boot is shown
generally by reference character 10 in FIGS. 1, 4 and 5, having a
foot portion 12, an ankle portion 14 and a leg portion 16; the
latter portion is considered to include any portion above the ankle
portion such as the knee portion and the thigh portion as
illustrated in FIG. 5. The boot 10 is made entirely of vinyl except
for a V-shaped section 18 which extends from the upper peripheral
edge 20 of the leg portion to substantially above the ankle portion
14. Section 18 consists of any extensible elastic material made of
cotton or synthetic fiber, including one elastic material known in
the trade as "goring" or "finger goring." The material 18 is
tightly joined to the leg portion 16 of the boot by the fusion of
edge 22 of the leg portion with edge 24 of the elastic material.
Furthermore, the elastic material 18 may be mounted on one side of
the boot or on both sides thereof.
Referring to FIG. 3, the joining of edge 22 with edge 24 is
effected through electronic welding which consists in bringing the
edges between a downwardly movable upper electrode 26 and a
stationary backing plate or electrode 28. The upper electrode 26 is
provided with a downwardly extending die 30, the configuration of
which corresponds to that of the edges to be joined. The inner
peripheral surface 32 of die 30 has a cutting edge 34 at its lower
end extending substantially lower than the adjacent lower ends
36.
A more detailed description of the method of making a boot in
accordance with the present invention will now be given. First, a
boot is entirely vinyl moulded where it is given a desired shape
and height. Let us assume that only one side, for example side 38,
with inner and outer faces 40 and 42, is selected to receive the
elastic material. The open end of the leg portion is introduced
over the electrode plate 28 in such a way that the inner face 40
will rest on plate 28. Then, the elastic material, having a
predetermined pattern selected by the designer, is inserted between
plate 28 and the inner face 40 of the boot. The elastic material is
positioned on plate 28 so as to have its entire peripheral edge in
vertical alignment with the peripheral edges 36 of die 30, which
have been given a configuration identical to that of the selected
design. The upper plate 26 is then lowered and brought into contact
with upper surface 42 of the boot. As the die presses onto the
vinyl, a heavy current is discharged to cause the fusion of the
vinyl and the elastic material in a temperature range from about
250.degree. F. to 350.degree. F. (but without reaching 400.degree.
F. at which temperature vinyl will be carbonized). The pressure
applied by the electrodes forms the weld. At the same time, the
cutting edge 34 will pierce the vinyl, leaving between the welded
edges a piece of vinyl 44 which is later manually removed once the
upper electrode has retracted to its original position.
It has been found that if cotton fiber is used as the elastic
material, it is preferable to first apply on the cotton edge to be
joined a coating having a latex base or vinyl base. Once the
coating is dry, the above-described electronic welding operation is
subsequently started.
As illustrated in FIGS. 4 and 5, the welded edges may form various
decorative designs. The selection of die 30 will also effect the
design at the welded edges.
Referring to FIG. 4 in particular, the dotted lines illustrate a
boot 46 using the same vinyl material, but without the presence of
a welded section 18; the ankle portion 14 and the leg portion 16 of
the boot made in accordance with the present invention are smaller
and shapelyer than that of boot 46.
Referring to FIG. 6, a glove is shown generally by reference
character 50, having a finger portion 52, a wrist portion 54 and an
arm portion 56; the latter portion may extend to the shoulder
portion. The glove is made of vinyl, except for the V-shaped
portion 58 which is made of the same elastic material described
above in relation with the boot 10. The elastic material is
electronically welded to the vinyl glove in the same manner as for
the boot 10 with the same reservation if cotton fiber is used
instead of synthetic fiber.
Although the invention has been described above only in relation to
two specific forms, it is evident that they can be varied and
modified in various ways. It is therefore wished to have it
understood that the invention is not limited in any way except by
the terms of the following claims.
* * * * *