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Патент USA US2112616

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March 29, 1938-
‘ s.
ALDERFER
2,112,616
SEMIRIGID ELASTIC THREAD
Filed March 4, 1937
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INV E N To R
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ATTORNEY
2,112,616
Patented Mar.‘ 29, 1938
PATENT’ orrlcs
UNITED STATES
2,112,616
'
SEMIRIGE) ELASTIC THREAD
vSterling W. Alder-fer, Akron, Ohio, assignor to
Andrews-Anette!‘ Company, Akron, Ohio, an.
corporation of Ohio
Application March4, 1937, Serial N0. 128,974
4- Claims.
(Cl. 117-57)
The present invention relates to the manufac
ture of elastic thread, such as used in the manu
facture of elastic webbing, ‘girdles, corsets or
other garments, and for other uses. It is the
5 object of the invention to construct an elastic
thread which shall be semirigid in character, that
is to say, sumciently rigid so that when woven or
knitted into a band or fabric, the ?nished goods
, may have a ‘certain rigidity and will resist the
10 tendency "to curl 'or wrinkle which is an objec
tionable feature in all elastic fabrics or garments.
At ‘:he same time the thread is not so rigid as to
be uncomfortable or inadaptable for the making
of garments of all kinds.
The ends attained by the invention are, so far
15
as known to me, new and novel.
The utility of
the invention will be apparent to those familiar
with the requirements of the garment industry.
While the drawing and description of the inven
tion are detailed so as to enable one skilled in the
20 art to'understand and practise the invention, it
will be understood that such details are not es
ential and may be modi?ed within the scope of
the invention.
,
'
> In the drawing is shown the best known or pre
v25 ferred forms of the invention, it being understood
that the drawing is greatly enlarged in order that
the construction may be shown. Thread made by
‘ the use of the invention may be very ?_ne indeed
and the ‘proportion of the several elements may
30
be varied or changed as would seem to be directed
by the requirements of the trade in particular
cases.
35
~
In the drawing:
Fig. 1 represents one form of elastic thread of
‘a partially or semirigid construction;
Fig. 2 is a longitudinal section through the
thread; and
Fig. 3 is a modi?ed form of thread.
40 - In the views shown in Figs, 1 and 2, the rubber
thread of the composite structure is thread which
is made by the process described in the Alderier
Patent No. 2,054,354. dated September 15, 1936,
in which a central textile ?ller 2 is surrounded by
45 a rubber jacket or envelope 3 made by wrapping
a tape of rubber, preferablyvmade from'latex,
about the ?ller while the tape is under tension.
This type of thread is selected as it has certain
improved properties, but it will be understood that
50 the invention is not limited to the use of this
thread as the core member, as any form of rub
Nor is it essential
that the rubber core be made from latex, as any
1 'ber core may be employed.
rubber thread may be used for this purpose.
The. semirigid property is imparted to the
thread by superposed wrappings of a ?exible tape
such as shown at 5 and 6, these tapes being
wrapped spirally as shown, with the spirals in op
posite directions. The tapes may, be spirally
‘wrapped in the same direction, but it is essential
in such case that the spirals break joint, that is '
to say, that the edges of the tapes be out of reg
ister. In the case of the oppositely directed
spirals shown in the drawing, the edges of one
tape cross the edges of the other tape throughout 10
the entire wrapping. By having the wrappings
out of register by either method described, one
set of spirals reinforces the other, and the'?exi—
bility of the structure is thus reduced or limited
to the requisite amount, whereas if only one 15
wrapping were applied, or if the edges of the
wrappings were in ‘register, the desirable semi
rigidity would not be secured.
7
It is apparent that the material selected should
possess certain properties and that many mate- 2o
rials are not adaptable for the purpose set forth.
I have found that the ideal material for the pur
pose set forth is a tape made from a regenerated
cellulosic sheeting such, for example, as that
made and sold under the trade name “Cello- 25 ‘
phane.” This material possesses su?lcient rigidi
ty to reinforce and sti?en the thread to the re- ’
quired extent and yet is su?iciently ?exible so ~
that garments made from the material are easy
and comfortable'to the wearer and are not ob- 30
jectionably sti?. Materials similar to “Cello
phane” may also be employed, such, for example,
as cellulose acetate sheeting.
,
'
Thesheeting is cut into narrow tape form and
wrapped about the central core with su?icient 35
tension so as to make an outer jacket which will ,
impart the requisite rigidity without making the
resultant thread too rigid for the purposes. ‘It
is obvious that the degree of tension employed
and the width of the tape will be factors in de- 40
terminlng the rigidity of the resultant thread.v
These elements may be modi?ed in accordance
with the speci?c properties required for any
thread which is to be made.
Any outer covering of “Cellophane” on the 45
thread would be objectionable in-a garment be
cause of the harshness of this material to the
body, and it is desirable to cover the thread with
one or more wrappings of a textile thread 8,
such as cotton, silk or rayon, and this wrapping 50
is spirally applied in either direction. If the two
wrappings of tape are applied in one direction,
then the thread should be applied in the oppo
site direction. Instead of spirally wrapping the
thread about the outside of the jacket, the outer 1'
2
2,112,616
covering may be braided or otherwise applied
elastic webbing or the like and being semirigid
thereon.
so as to resist curling or/yvrinkling, said thread
_
_
>
It is possible to secure the relatively stir! ‘outer ‘ comprising a rubber core and a plurality of spiral
Jacket by applying a single tape in overlapping wrappings of tape made from cellulosic sheet
form as shown at I! in Figure 3. In this case ing surrounding the core with the joints in said
the edges to the tape overlap or break Joint so wrappings out of register to impart the requisite
_
that the semirlgid structure is obtained. An rigidity to the thread. i
over-wrapping of thread 8 is also employed-in
this form.‘
I ‘10
The semirigidity-of the composite thread has
created a new and valuable commodity, for it has
2. An elastic thread having su?icient ?exi
bility to be adapted tor-the manufacture of gar-'
use in the manufacture of elastic garments. Gar
ments, elastic webbingror the like and being semi 10'
rigid so as to resist curling or wrinkling, said
thread comprising a rubber core, a plurality of
spiral Wrappingsv ofltape made from cellulosic
sheeting surrounding the core with~the joints in
said wrappings out of register to impart the req 15
uisite rigidity to the thread, and a textile cover
ments made from this material, however, are
ing about the outside of the thread.
not perceptibly stiffer than garments made from
3. An elastic thread sumciently ?exible to be
adapted for elastic garments, comprising a rub
' been impossible heretofore to secure a thread
which is elastic and has su?lcient ?exibility to
resist vwrinkling or curling and yet is not so still’
15 ‘as 'to be uncomfortable and non-adaptable for
the ordinary or standard elastic threads.
.
v
The arrangement of the cellulosic tape should ber core and a jacket surrounding the core con 20
be such~that the edges 01' the tape shall break .' sisting of a plurality of layers of cellulosic tape
wrapped about the core with the joints of said
joint at all times and evenv when under such ten
wrappings in non-registering relationship, the
sion as may occur in use, for if the overlying
layers are not out of register at all times, the‘ tape imparting su?icient rigidity to enable the
semirigidity will be lost, as without overlapping garment to resist curling or wrinkling.
the tape will not reduce or limit the ?exibility
4. An elastic thread su?iciently ?exible to be
adapted for elastic garments, comprising a. rub
oi the thread.
'
'
Where the term "cellulosic sheeting” is em
ployed in the claims, it will be understood that
.30 this term includes “Cellophane," cellulose acetate
ber core, a jacket surrounding the core consist~
ing of a plurality of layers of cellulosic tape
wrapped about the core with the joints of said 30
sheeting and other materials of the same or
wrappings in non-registering relationship, the
equivalent properties.
tape imparting su?icient rigidity to enable the
What is claimed is:
garment to resist curling or wrinkling, and an
outer textile jacket surrounding the thread.
STERLING W. ALDERFER.
- 1. An elastic thread having su?‘lcient ?exibility
to be adapted for the manufacture of garments,
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