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Патент USA US2118223

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May 24, 1938.
I ve. E. NORDSTROM
2,118,223
REED LOOM
Filed Dec. 5, 1936
2 Sheets-Sheet’ l
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May 24, 1938.
G. E. NORDSTRO'M
2,118,223
REED LOOM
Filed Dec. 5, 1936
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2 Sheets-Sheet 2
(Patented: May '24, 1938
' 2,118,223
UNITED STATES
PATENT OFFICE‘
2,118,223
REED LOOM
Gustaf E. Nordstrom, Gardner, Mass, assigno'r to
American Fibre Corporation, Gardner, Mass, a
corporation of Massachusetts
Application December 5', 1936, Serial No. 114,454
3 Claims.
This invention relates to looms for weaving reed
and more particularly to looms for weaving ?bre
the warp reeds is relieved at spaced points in the
Width of the fabric. Weft reed breakage is thus
reed made from folded or ‘crushed kraft paper
and fed from a drum or spool or other continuous
substantially eliminated.
This invention further relates to arrangements
supply.
My present invention is in the nature of an
improvement and addition to the loom shown in
my prior Patent No. 1,891,944, issued December
27, 1932.
10
In the loom therein shown, a lay was provided
having a beater plate with a plurality of upstand
ing dents or ?ngers, and this lay was given oscil
lating motion in an irregular closed path such
that the ?ngers engaged the weft reed only on the
15 forward stroke. This permitted a new pick of
reed to be fed across the loom during the beat-up
of the preceding pick.
The reed used in such looms, whether for warp
or weft, is of substantial thickness and the bend
20 ing of the weft reeds over and under the warp
reeds during the beat-up of the weft causes the
end portions of the weft reed to be drawn inward
from both edges of the fabric toward the center
thereof.
25
(01. 139—191)
.
When the warp reeds or stakes are substan
tially spaced apart, the weft reeds will commonly
stretch or creep inward enough during the beat
up to relieve the strain on the reed, but when the
warp reeds or stakes are closer together, the weft
30 reeds are more closely bound in the fabric and the
transverse take-up or shortening of the weft reeds
is also increased because of the more numerous
bends or curves formed therein by the warp reeds.
and combinations of parts which will be. herein
after described and more particularly pointed out
in the appended claims.
A preferred form of the invention is shown in
the drawings, in which
Fig. 1 is a sectional side elevation of parts of
a reed loom embodying my invention;
.
Figs. 2, 3, and 4 are views similar to Fig. l but
showing the parts in different operative relations;
Fig. 5 is a partial plan View, looking in the di
rection of the arrow 5 in Fig. 2;
Fig. 6 is a similar View, looking in the direction
of the arrow B in Fig. 4;
Fig. 7 is a side elevation of a cam and cam
plate to be described;
Fig. 8 is a sectional end elevation, taken along
the line 8-—~8 in Fig. 7; and
Fig. 9 is a diagram showing the path of travel
of the cam roll which actuates the weft-engaging
devices.
Referring to Fig. 1, I have shown parts of the
loom disclosed in my prior patent above identi?ed,
comprising a ?xed frame or loom side It’ and a
lay ll mounted on arms l2, which in turn are in
part supported on a cross shaft [4.
The lay II is provided with a heater plate l5
having upstanding dents or ?ngers I6, and the
lay and beater ?ngers are moved by the arms 12
in an irregular closed path such that the ?ngers
In wide goods, this close spacing of the warp
IS on their rearward movement pass below the
35 reeds thus results in frequent breakage of the weft
position of the weft reed W, while in their for
ward movement they engage and beat-up the
weft. Mechanism for effecting this irregular mo
tion is fully disclosed in my prior patent.
reeds during the beat-up.
It is the general object of my present invention
to provide means for manipulating the weft reeds
in such manner that this breakage of reeds dur
40
ing the beat-up will be substantially avoided.
To the accomplishment of this general object, I
provide reed-engaging devices at spaced intervals
across the lay and I providev means for moving
these devices in such manner and at such times
45 that the end portions of the weft reed are drawn
inward from the edges of the fabric toward the
center thereof before the shed has fully closed
and before the weft reed is engaged and driven
forward by the beater ?ngers.
These reed-engaging devices form forwardly
50
directed loops or curves in the weft reed at spaced
Guide. members 20 and 2| are mounted on rock
shafts 22 and 23 respectively, and the guide mem
bers 2! are provided with guide openings 24
(Fig. 2) through which a new weft reed is in
serted when the members 20 and 2| are in the
position shown in Fig. 1. After insertion, the reed
is cut off by suitable cutting mechanism,
After the’ lay II and beater ?ngers l?have
moved to rearward position, the guide members
20 and 2| are separated as shown in Fig. 2, so
that the new weft reed W is loosely deposited be
tween the sheds of the warp. The lay H and
intervals across the fabric, which loops or curves
beater ?ngers l6 thereafter move forward as the
supply surplus material as the weft reed is short
ened during the beat-up, so that the strain on the
shed closes, thus beating the new weft reed ?rmly
into the fabric.
55 weft reed caused by the bending thereof about
The parts and operations thus far described
10
2
2,118,223
are as shown in my prior patent to which refer
woe is made for a more complete explanation.
I will now describe the additional weft-engag
point, the weft reed W is held loosely enough to
permit the end portions of the reed to slide to
ward the center to provide surplus material for
ing devices by which weft breakage in wide fabrics
with closely spaced warps has been eliminated.
In order to effect this desired result, I provide
a plurality of hook-like weft-engaging devices
30 adjustably mounted on collars 3| and secured
the loops or curves W’.
As the lay continues to move forward, the cam
roll 4|! is moved forward of the axis of the stud
49 and the devices 30 and operating arm 42 move
thereto in any convenient manner as by screws
10 33 (Fig. 1). The collars 3| are secured in spaced
relation on a cross rod 34 rotatable in bearings
35 ?xed to the lay ||.
A cam roll 40 (Fig. 5) is mounted on a stud 4|
?xed in the end of an arm 42 having a hub 43
15 ?xed to the end of the cross rod 34. The cam roll
40 is positioned to successively engage a ?xed cam
plate 45 and a movable cam plate 46.
The cam plate 45 is mounted on a supporting
plate 48 secured to the loom side l0, and the mov
20 able cam plate 46 is pivotally secured to the sup
1O
low the fabric which is being woven.
The beater ?ngers l6 force the entire weft
reed forward during the beat~up but the loops or
curves W’ provide surplus material to be bent
around the closely spaced warp reeds.
The ?ngers 30 are to be so adjusted that the
surplus material in the loops W’ will be accurate
ly suf?cient to offset the drawing in of the weft
as it is bent over the warps, so that no exceptional
longitudinal strain will be placed on any portion
20
of the weft reed.
porting plate 48 by a stud 49. An L-shaped stud
By thus providing surplus material at spaced
50 (Fig. 8) has one end ?xed in the movable cam
points in the width of the fabric for use during
the beat-up, I am able to operate my loom on wide
fabrics with closely spaced warp reeds at rela
plate 46 and extending through a segmental slot
5| in the supporting plate 48.
.
The upturned outer end of the stud 50 extends
through a ?xed bearing plate 52 and is provided
with a coil spring 53 which exerts downward pres~
tively high speed and without substantial. weft
breakage.
~
nuts 54 may be adjusted to vary the pressure of
Having thus described my invention and the
advantagesthereof, I do not wish to be limitedv
to the details herein disclosed, otherwise than
as set forth inv the claims, but what I claim is:—
1. In a reed loom, means to provide a weft reed,
the spring 53.
a lay, a beater on said lay, a plurality of trans
sure on lock nuts 54 on the stud 50.
.30
by gravity to the inoperative position shown in
Fig. 4, with the devices 30 positioned entirely be
The cam
plate 46 is thus normally held yieldingly in the
position shown in full lines in Fig, '7. The lock
The cam roll 40 engages the ‘?xed cam plate
45 near the middle of the rearward beat of the
35 lay II and passes under the movable cam plate
46 as it is moved rearward in contact with the
?xed cam plate 45. On its forward movement,
however, the roll 40 travels over the movable cam
plate 46 during the ?rst part of its forward move»
ment.
'
Successive positions of the cam roll 40 are indi
cated in dotted lines at a, b, c, d, e, and 1‘ respec
tively in Fig. 7 and the path of movement of the
center of the cam roll is indicated by the curve C
45 in Fig. 9. For unusually wide looms or heavy fab
' rics, the cam mechanism described may be dupli
cated at the opposite side of the loom.
Having described in detail the parts of the loom
essential to the understanding of my invention, I
50 will now describe the operation thereof.
.
In Figs. 1 and 2 the lay | | and beater ?ngers l6
are shown in their rearmost position, with the
cam roll 40 in the position 0 of Fig. 7 and at the
extreme left-hand end of the curve C in Fig. 9.
55 While the parts are momentarily in this position,
the guide members 20 and 2| are separated to re
lease the new weft reed W, and at the same time
the warp shed begins to close.
As forward movement of the lay II and beater
?ngers l6 begins, the hook-shaped weft-engaging
devices 30 are raised behind the freshly inserted
weft W at the moment when the warp shed has
closed sufficiently to frictionally engage the weft.
The weft portions W’ engaged by the devices
65
30 (Fig. 6) are drawn forward in loops or curves,
while the intervening portions of the weft W re
main in their original position until engaged by
the beater ?ngers l6.
As the shed has not entirely closed at this
70
versely spaced reed-displacing devices, a cross
shaft mounted on said lay and supporting said
devices, an arm on said shaft, a ?xed cam engag
35
ing said arm on the rearward stroke of the lay,
and a second cam engaging said arm on the for
ward stroke of the lay, said latter cam being dis
placed and inoperative during the rearward
40
stroke.
2. In a reed loom, means to provide a weft
reed, a lay, a heater on said lay, a plurality of
transversely spaced reed-displacing devices, a
cross shaft mounted on said lay and supporting
said devices, an arm on said shaft, a cam roll
on said arm, a ?xed cam operatively engaging.
said cam roll on the rearward stroke of the lay,
a second cam movably mounted above said ?xed
cam and displaced by said cam roll during rear
ward movement thereof, said second cam resting
on said ?xed cam during forward movement of
the lay and operativelyengaging said cam roll
during a portion of such forward movement.
3. In a reed loom having a lay, means to sup- -
ply a weft reed for said lay, and means to open
and close a warp shed relative to said weft reed,
that improvement which consists in providing
displacing elements mounted on said lay and
movable with and also relative thereto and effec
tive to engage and displace spaced portions only 60
of a weft reed on said lay simultaneously for
ward to produce a series of loops spaced across
the width of the fabric, and in providing means
to cause said displacing elements to engage said
weft reed when the warp shed is nearly closed
and when the warps are positioned to frictionally
engage and substantially retard forward move
ment of the portions of weft reed between said
spaced loops.
GUSTAF E. NORDS'I’ROM.
70
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