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Dec. 24, 1946.
M. P. EPSTEIN ET AL
2,413,223
METHOD AND APPARATUS FOR- MOUNTING AND CONTR OLLING
TENSION OF WARP BEAMS OF LOOMS
Filed Sept. 11, 1944
3nventor
MOSES P. EPSTEIN
AND CLARENCE-R. BARTON
Bu
X.
anormzg
2,413,223 "
Patented Dec. 24, 194.3*
UNITED STATES PATENT . orrics
AND CONTROLLING TENSION OF WARP
I BEAMS OF LOOMS
Moses ‘P. Epstein and. Clarence 1!. Barton, New
York, N. Y., asslgnors to Industrial Rayon Cor
poration, Cleveland, Ohio, a corporation of
Delaware
Application September 11, 1944, Serial No. 553,586
5 Claims,
(01. 139-101) ‘
2
This invention relates to a method for equaly
izing tension of warp fed to a loom from a plu
rality of beams and to an apparatus for mounting
the warp beams.
.
' beam, tension is spread through the warp so thatv Y ‘
'
In a conventional beam rack, it is customary .
to tension 9, warp by means of a rope wound
around a beam head, one end of the rope being
fastened to the rack frame and the other to a
the ?nal warp sheet is substantially uniform in
tension throughout its width.
Generallyi in weaving tire cord fabric from tire
cord of .1000 denier and higher, the cord is usu
ally supplied from a great number of cones or
spools which may number several thousand,
mounted on a creel adjacent a loom.
These
cones or spools are limited supplies and must be
pivotally mounted lever carrying weights. This
frequently replaced in order to furnish a contin
10
braking system while effective on individual
uous supply to the loom. Further, cord from
beams is not entirely adaptable‘to a plurality of
these cones or spools is usually individually ten
beams. The warp is usually unwound in a some
sioned by special tensioning devices. Where a
what ierky manner due to the action of the loom.
great number of cones are utilized, the uniform
The tendency then of each beam of a plurality
tensioning of all cord ends is extremely dif?cult
of beams is to unwind unequal amounts, thus 15 to achieve and a lack of uniform tension is, of
creating different tensions in the warp from dif
course, re?ected in poor subsequent performance
ferent beams. Braking of a plurality of beams ' of the woven cloth. The present invention may‘
by the slip-friction method does not of itself,
be applied with particular advantage to the
therefore, provide for a uniform warp tension‘
weaving
of tire cord fabric. By utilizing a plu
even upon a careful control of the braking 20 rality of beams to-supply cord warp, the inven
weights due to variable frictional resistance of
tion permits a weaving operation over a long
each beam-braking means.
period of time and the warp ends on such beams
This invention provides a method of uniformly
are readily adaptable to a simple and substan
tensioning the warp threads from a plurality of
tially complete and uniform tension control. For
beams braked by a slip-friction type of braking
a better understanding of the advantages of the
means. Also, this invention provides an appa
method and apparatus 'of this invention, refer
ratus or a beam rack for mounting the beams in
ence is made to the following description and
such manner as to enable the practice of this
drawing where:
‘ '
method. Generally, where a number of beams,
Figure 1 is a diagrammatic elevation of a loom
as for instance twelve or more are utilized, it 30
is desirable to mount them as near the loom as
practicable and ‘in a series relation. The beams
and beam-mounting apparatus;
Figure 2 is an enlarged schematic plan view of
are mounted six in a series, and in levels one over
the top series of beams.
the other. Mounting the beams in such manner
permits the passing of warp threads off the last or
most remote beam over a substantial part of the
bered l0 through l5, and I6 through 2|, respec
periphery of the next succeeding beam, combin
ing it with the warp of the next succeedingbeam,
xand so on until, ?nally, all warp from each beam
of the series is gathered as a single warp sheet
that is fed to the loom.
The method of passing warp threads from one
beam over a succeeding beam and interleaving
it with the warp of the beam being passed over,
-
Referring to Figures 1 and 2, two levels of
beams, each comprising a group of six, num
tively,‘ are mounted in planes, one above the
other. Beams l0 through I! rest in adjustable »
open bearings 24 ?xed on vertical supports 25,
while beams l6 through 2| rest in adjustable
open bearings 28 ?xed on vertical supports 21.
Vertical supports 25 and 21 are positioned inter
mediate each other to facilitate the mounting of .
beams in the bearings and bearing adjustment.
Each warp beam head has a customary
combining the warps, then passing such combined 45 weighted rope type of friction brake. The brake
warp over subsequent succeeding beams, etc.,
usually consists of a lever 3|! pivotally mounted
provides additional frictional control of each
at one end on a beam support 25 as at 3| and
beam, stabilizing the tension of the warp there
carrying on its unsupported end a group of disc
between, and thus neutralizing possible excessive - shaped weights 32. Rope 33, which may be sash.
rotation of the individual beams when only the 50 cord or a leather strap, or any braking material,
braking system is‘
conventional weighted rope
used. Further, the tension on the warp from
may‘ be fastened at one end onto the pivot 3|,
passed around the beam head and fastened at its
distant beams of a series of beams is generally
other end to the lever 30. The weights.” exert
equivalent to the tension on thewarp between
a pull on rope 33 which frictionally prevents the
any two subsequent beams, and the warp stretch 55 rotation of the warp beams. A single illustration
is much less than that of long, unsupported, not
of the slip-friction braking device is shown, al
though each beam ||l through 2| is equipped
therewith.
Due, however, to the method em
equivalent to the distance between adjacent
ployed for equalizing ‘the tension of all warp, as
beams which are positioned relatively near each 60 will be hereinafter explained, it is necessary that
other. As the warp is gathered from beam to
interlaid warp threads. This is so because the
free length of any warp thread is substantially
' ‘2,413,293
3
,
the beams of each series rotate toward each
other. Because of such rotation, the braking de- .
vice must be alternately placed on opposite beam
heads, otherwise, the'weighted leverarwoulgl in
terfere with each other.
. 4
.
tioned beams the warp'ot the beam being passed
over, cumulatively adding the'warp of all subse
quentsucceeding beams to the combined warp
. from the beams .passed over as the combined
.
The slip-friction braking devices utilized do not
of themselves provide for a uniform tension 01'
the warp fed to the loom. Due to the action
of the loom, warp is withdrawn from the beams
in a somewhat Jerlw fashion. Such withdrawal 10
of the warp causes unequal braking since some
beams will be retarded in rotation more than
others, thus creating a variation in tension of the
warp threads comprising the ?nal warp sheet.
I By passing the warp of the last or most remote
warp passes each subsequent beam periphery. and
feeding said combined warp to said loom.
2. The method of supplying a uniformly ten
sioned warp to a loom from a plurality of beams
which comprises, mounting the beams in at least
two levels, one over the other, each level being
arranged in series relative to the loom, passing
the warp threads from the beam most remote
from the loom in each of said levels over a sub
stantial part of the periphery of the succeeding
' beamv in the same level and adding to the pass
beam over a substantial part of the periphery of
ing warp the warp of the beam being passed
the next succeeding beam, then joining the warp
over, passing the combined warp over a substan
of the succeeding beam, the cumulative warp then
tial part of the periphery of the next succeeding
being similarly passed over the next succeeding
beam in the same level and adding to the com
beam, etc., until the ?nal warp off the last beam 20 bined warp of the’ ?rst two mentioned beams the
‘ is comprised of the total warp threads of the
warp of the beam being passed over, cumulatively
entire series of beams, the tendency ‘of some
adding the warp of all subsequent succeeding
beams to overrun is substantially minimized.
beams of the same level to the combined warp
This method of interlacing warp threads of a
from the beams passed over as the combined
series of beams is particularly shown in Figure 2.
warp passes each subsequent beam periphery,
The direction of rotation of the beams is in
combining into a single warp sheet the cumulative
dicated in Figure 1 by the arrows'on the respec
warp from each beam level. and feeding said warp I
tive beams. Beam l5 rotates in a counterclock
sheet to~ a loom.
wise direction while beam it rotates in a‘clock
3. In combination with a loom, a warp feeding
wise direction. The warp from beam I5 is led
apparatus for rotatably supporting and frictional
down and around beam l4, Joining the warp 30 ly restraining the rotation of a plurality of warp
thereof._ The combined warp of beams i5 and
beams comprising, means for supporting a plu
II is led over the counterclockwise rotating beam
rality of warp beams positioned in series relative
l3 and interlaid with the 3warp of that beam;
to the loom, the said means supporting said plu
rality of warp beams so that the warp from the
first unwound beam is adapted to be passed over
I2; the accumulated warp is then led to beam
a substantial part of the periphery of each next
H and combined with-the warp of beam ii; the
succeeding beam to frictionally restrain the ro
enlarged combined warp is then further led over
tation of said succeeding beams.
beam l0 and between a pair of spaced rollers 40
4. In combination with a loom, a warp feeding
36, 31. The warp of‘ the lower series of beams
apparatus for rotatably supporting and friction
is through 2| is similarly handled. Warp un
ally restraining the rotation of a plurality of warp
wound o? beam [6, ‘being the cumulative total
beams comprising, a ?rst beam-supporting means
of all warp threads'oi'! beams I6 through 2|, is
positioned in series relative to the loom, a second
then the cumulative total is led down and around
beam l2 and combined with the warp of beam
also led between the spaced rollers 36, 31.
'
The two warps are substantially combined be
tween the rollers 36, 31, to effect a single warp
sheet of substantially uniform tension. The warp
sheet is then led to a loom generally indicated at
40 from whence it passes as cloth to be .wound
on cloth roll 4|.
_.
‘
v
a
45
beam-supporting'means positioned in series'reia
tive to the loom and on a different level than
said ?rst beam-supporting means, the said means
supporting said warp beams so that the warp
from the most rearward beam of each level is
50 adapted to be passed over _a substantial part of
the periphery Of each forwardly positioned next
As shown in Figure 1, the lower of the two
succeeding beam in the same level to frictionally
series of beams is shown mounted slightly at
restrain
the rotation of said succeeding warp
an angle, the angle between the series of beams
beams.
_
.
diverging toward the loom. Such angular mount
‘r 5. In combination with a loom, a warp feeding
55
ing of the lower series of beams provides more
apparatus for rotatably supporting and friction
working space between the beams as the number
ally restraining the rotation of a plurality of warp
of warp threads increase. The arrangement of
beams comprising, a first beam-supporting means
the two series of beams can, of course, be a paral
positioned so that the axes of the supported beams
lel one. Further, a lesser‘ numbe'r'of beams can
lie in a single plane and in series with the loom,
be used in practicing the method described, or' a 60 a second beam-supporting means also positioned
single series of beams can be used.
'
We claim:
1. The method of supplyinga uniformly ten
' so that the axes of the supported beams lie in
a single plane and in series with the loom and
below said ?rst plane, said second plane being
sioned warp to a loom from a plurality of beams
at an angle to said ?rst plane, the said apparatus
65
which comprises mounting the beams in series
supporting said warp beams so that the warp from
relative to the loom, passing'the warp threads
the most rearward beam of each plane is adapted
- from the beam most remote from the loom over
a substantial part ‘of the periphery of the suc
ceeding beam and adding to the passing warp
the warp or the beam being passed over, passing
the combined warp over a substantial part of the
periphery of the next succeeding beam and add
ing to the combined warp of the ?rst two men
to be passed over a substantial part of the pe
Y riphery of each forwardly positioned next suc
ceeding beam in the same plane to frictionally
restrain the rotation of said succeeding warp
beams.
MOSES P. EPS'I‘EIN.'
CLARENCE R. BARTON.
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