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Патент USA US3045721

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July 24, 1962
E. J. GIBBoNs
3,045,71 l
TWO-FLY OR MULTI-PLY NARROW WOVEN FABRICS
Filed Sept. 5, 1958
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Inventor
Edwin J. Gibbons
Patent G ” IC@
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Patented July 24, 1962
2
of the warp threads of one or more plies with the weft
3,045,711
TWG-PLE( 0R MULTI-PLY NARRGW
WOVEN FABRICS
Edwin J. Gibbons, 149 Anthony St.,
of the other plies, as is conventional and well known in
the art.
Since in the operation of my invention the different
shuttles each pass through their respective warp sheds as
East Providence 14, RJ.
though a single ply fabric were being woven, there is no
Filed Sept. 5, 1958, Ser. No. 759,337
necessity of considering the clockwise or counterclock
1 Claim. (Cl. 139-408)
wise motion which takes place in the manufacture of
The present invention relates generally to the textile ‘
multi-ply fabrics with a single shuttle.
A further feature of my invention is the provision of
art, and is more particularly concerned with the provision 10
a series of special catch threads at the outer edges of the
of an improved multi-ply narrow woven fabric, and a
fabric. These special catch threads may be arranged
method of manufacturing same.
singly or in pairs and are caused to interlace simultaneous
It has heretofore been common practice in the manu
facture of multi-ply narrow woven fabrics to utilize only
ly and alternately with the weft of the upper ply and the
one shuttle. For example, in the conventional construc 15 weft of the lower ply, as well as the wefts of any inter
mediate plies that may be present, to form a bound edge
tion of a simple two-ply fabric, the usual procedure is as
follows. One half of the face ends are raised and the
for the fabric. Without these special catch threads, the
edges of a multi-ply fabric constructed in accordance
single shuttle carrying the weft is passed through the shed
thus formed. Then all of the face ends and one half
with my invention would be rough and unfinished, in that
of the back ends are raised and the shuttle is passed back 20 the weft loops at each edge would be loose and discon
nected with respect to each other. With these catch
through the shed thus formed. On the third pick the
face ends that were raised on the first pick are lowered
threads, however, the result is a well integrated multi
ply fabric that in both appearance and construction has
and the other half of the face ends are raised and the
essentially the same characteristics as a conventionally
shuttle is 'passed through this shed in the same direction
as the movement of the ñrst pick. On the fourth pick, 25 woven multi-ply narrow fabric.
Other objects, features and advantages of the invention
all of the face ends and the alternate back ends lare raised
will become apparent as the description thereof proceeds
and the shuttle passes back again, thus completing the
when considered in connection with the accompanying
cycle. The shuttle may pass through this sequence of
sheds in either clockwise or countercloekwise direction
illustrative drawings.
In the drawings which illustrate the best mode presently
with respect to the bulk of the warp threads, depending on 30
contemplated by me for carrying out my invention:
various factors. As will -be obvious, the resulting fabric
would be a hollow tu-be except for the usual incorporation
FIG. 1 is a fragmentary edge view, partly in section, of
a two-ply fabric constructed in accordance with my in
ot" a series of stitching threads or binders that draw to
vention, the complete path of the weft threads being shown
gether the top and bottom plies, thus forming the finished
35 in perspective for purposes of illustration, and each dif
two-ply narrow woven fabric.
ferent weft thread being marked so as to more clearly
In the heretofore known construction of three-ply fab
rics, the picks are inserted by a single shuttle in one-face
identify its path;
r
one-middle-one-back and reverse order; or one-face-one
i FIG. 2 is a View similar to FIG. 1 in which a modified
middle-one-face, one-back-one-middle-one-back order, or
arrangement of catch threads are illustrated;
similar interlacing. Four-ply fabrics are constructed simi 40 ï FIG. 3 is a yiew similar to FIGS. 1 and 2 except that
larly, and in the case of both three- and four-ply fabrics
a three-ply fabric is illustrated; and
FIG. 4 isa similar View illustrating a four-ply fabric.
the shuttle may operate in either clockwise or counter
Referring now to the drawings, and more particularly
clockwise order, or a combination of both.
to FIG. 1 thereof, there is shown generally at 10‘ a two
A primary object of the instant invention is the provi
sion of a multi-ply narrow woven fabric, and a method of 45 ply fabric constructed in accordance with my invention.
The upper ply 12 comprises warp threads 162- and weft
making same, wherein separate shuttles are operated simul
thread 16, while the lower ply 18 comprises warp threads
taneously, one for each ply. It has been found that by
20 and weft thread 22. As will be clearly seen, the warp
simultaneously operating separate shuttles, such as by
threads of each ply are alternately raised and lowered
the use of a multi-bank cross-shot loom, the speed of
to provide paths through which the weft threads pass.
manufacture of the fabric is increased in direct proportion
it being noted that the two weft -threads are separate and
to the number of plies in the fabric, or, in other words,
distinct from each other. It will be seen that the por
in direct proportion to the number of shuttles employed.
tions of the weft threads 16 'and 22 which extend trans
Expressed differently, a two-play fabric, manufactured
versely across the fabric are in exact vertical alignment
by the use of two simultaneously operating shuttles in ac
with each other. In the manufacture of this fabric, it
cordance with the instant invention, will be produced ap
will be understood that separate shuttles (not shown) are
proximately twice as fast as a two-ply fabric manufactured
employed for wefts 16 `and 22, and said shuttles are simul
by the heretofore described conventional method. Like
taneously operated in opposite directions. More spe
wise, a three-ply fabric, employing three shuttles, one for
cilically, as the shuttle carrying weft 16 is moving from
each ply and operating simultaneously, will be produced
the »face edge of the fabric yto the back edge, the shuttle
at least three times as fast as by the customary method,
Y.
while four-ply fabric, employing four shuttles, one for
each ply and operating simultaneously, will be produced
carrying weft 22 is moving «in vertical »alignment there
respective shuttle -carrying its self-contained weft supply,
as is well known in the art. The movement of the fell
of the fabric away from this point causes a loop to be
with from the back edge to the face edge. As will be
apparent, when the wefts 16 and 22 reach the edge of
at least four times as fast as by the customary method.
the fabric, their respective shuttles reverse, it being under
In my novel and improved method, each ply is woven
65 stood that each shuttle travels in `a reciprocatory path,
separately from its own respective warp and with its own
the various shuttles interlacing simultaneously with their
respective warps, with adjacent shuttles moving in oppo
site directions as the fabric is traversed, but in the same
automatically formed in the weft at the selvage edge,
and since the shuttles are moving in opposite directions,
vertical plane. The separately woven multi-plies are then
stitched together by binders or by interlacing some or all
placed with respect to the looped endsV of the other weft.
it will be' seen that the looped ends of one weft are dis
3,045,711
3
It will be understood, of course, that va plurality of warp
threads are present across the fabric, the exact number
being determined by the width and quality of the fabric.
At the outer edges of the fabric, I utilize special catch
threads 30 which interlace simultaneously and alternately
with the looped ends of the upper and lower weft-s. If
these catch threads were not utilized, the edges of the
fabric would not be bound, but rather the looped weft
ends would be free »and loose, and the separate plies would
not be united. If desired, a stuf‘fer warp 32 may be posi- .
tioned between the plies. Also, it will be understood
Athat binder warps (not shown) may be utilized to stitch
the upper and lower plies together between the outer
edges of the fabric, as is conventional and well known in
By utilizing a multi-bank cross-shot loom, it is a simple
matter to employ separate shuttles for each ply in any
of the foregoing multi-ply fabrics, it being understood
that each shuttle carries its own self-contained weft sup
ply, and it «further being understood that adjacent shuttles
move in opposite directions. By the use of this novel
and improved technique, a multi-ply fabric may be woven
in a greatly reduced time, as compared to the conven
tional technique wherein a single shuttle is used for a
plurality of plies. In fact, by my process the manufac
ture of a multi-ply narrow woven `fabric is expedited in
direct proportion to the number of plies present, as com
pared to the conventional manufacturing techniques. In
addition to the saving in time, I find that by utilizing my
the art.
`
special catch threads at the edges of the fabric to inter
In FIG. 2 a two-ply fabric indicated generally at 34 is
lace the weft loops, the end product is as well integrated
illustrated, it being noted that the construction of this
at its edges as a multi-ply narrow fabric made by the
fabric is identical to the fabric 10, above described, with
conventional methods heretofore known.
the exception of the fact that the catch threads arrange
While there is shown «and described herein certain
ment is slightly diñerent. More specifically, in the em
Specific structure embodying the invention, it will be
bodiment of FIG. 2 each catch thread 36 does not inter
manifest to those skilled in the art that various modifica
lace each lower weft loop with the next adjacent upper
tions and rearrangements of the parts may be made
weft loop, as was the `case in FIG. 1, but rather each lower
without departing from the spirit and scope of the under
weft loop is interlaced with an upper weft loop which is
lying inventive concept and that the same is not limited
next to -the most closely adjacent upper weft loop.
25 to the particular forms herein shown and described ex
Referring now to FIG. 3, a three-ply fabric 38 is shown
cept insofar as indicated by the scope of the appended
having an upper ply 40, a middle ply 42 anda lower ply
claim.
44. Each ply is constructed in a manner identical to
I claim:
that described in connection with fabric 10, 'except that
A «multi-ply narrow woven fabric, each ply comprising
it will now be understood that the shuttles carrying the 30 warp threads and a weft thread interwoven thereacross,
upper and lower wefts move in the same direction, while
the weft thread of each ply being separate and independ
the middle shuttle moves in a direction opposite thereto.
ent from the weft thread of each other ply, each of said
Once again catch threads 46 interlace the looped weft
weft threads extending from one edge of the fabric to
ends at the opposite edges of the fabric, las clearly illus
the opposite edge and then back to said one edge through
trated. Stuffer warps 48 may be positioned between ad 35 out the fabric so as to form alternate loops at opposite
jacent plies, if desired, while the various plies may be
edges of ythe fabric, the weft threads of one ply being in
vertical alignment with the weft threads of each adjacent
binders or by interlacing 4some or all if the warp threads
ply, except that the looped ends of a given weft thread
of one or more of the plies with the weft of the other
are in registry with the intermediate open portion of the
40 adjacent ply, and catch threads at opposite edges of the
plies, as is well known in the art.
»
In FIG. 4a four-ply fabric 50 is shown having an upper
fabric interlacing the looped ends of the weft threads to
ply 52, an upper middle ply 54, a lower middle ply 56,
form the outer edges of the fabric and to connect the
and a lower ply 58. Once again separate shuttles are
plies to each other at said outer edges.
employed for the weft in each ply, it being understood
45
that the shuttles carrying the upper and lower middle
References Cited in the ñle of this patent
wefts move in the same direction, but in a direction oppo
UNITED STATES PATENTS
site to the shuttles carrying the upper middle and lower
870,697
Stevenson ___________ __ Nov. 12, 1907
wefts. At the opposite edges of the fabric, catch threads
1,524,398
Kennedy ____________ __ Jan. 20, 1925
di) interlace the weft loops of the four plies, it being noted
that in the illustrated arrangement six separate catch
stitched together intermediate their edges by suitable warp
threads are utilized.
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