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Патент USA US3052435

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SePt- 4, 1962
G. H. REED ET AL
3,052,425
UNREELER
Filed May 15, 1958
3 Sheets-Shea?I 1
III'
INVENTORS
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BY
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Sept. 4, 1962
G. H. REED ET AL
3,052,425
UNREELER
Filed May l5, 1958
5 Sheets-Sheet 2
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INVENTORS
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United States Patent C ` ”la@
3,952,425
Patented Sept. 4, 1962
2
3,052,425
UNREELER
George H. Reed, Chicago, and John E. 0tt, Hinsdale,
In order to further provide an advantageous unreeler,
the spindle of the unreeler is projected above or approxi~
mately at the same level as the top surface of a coil posi
tioned on the unreeler and the spindle is provided with
ya liexible guide arm which ordinarily guides the strip
material to direct it against the inside circumference of
the coil, but deflects toward the sleeve as the convolu
This invention relates to improvements in unreelers of
a type particularly adapted for the storage of a coil of
ribbon-like or strip material such as steel strapping and
for the unreeling of the material either continuously or
tions contract in response to a pull on the leading end
Ill., assignors to Acme Steel Company, Chicago, Ill., a
corporation of illinois
Filed May 1S, 1958, Ser. No. 735,510
6 Claims. (Cl. 242-105)
intermittently from the coil.
of the strip as it is withdrawn. As the pull on the strip
end is relaxed, the ñexible arm `again moves toward the
coil. This reciprocating type motion of the flexible arm
back and forth is repeated over and over again as the
There have been many unreelers developed for use
strip is intermittently withdrawn and it further prevents
with strip materials such as steel strapping. Some of
entangling of the convolutions by constantly varying the
the problems associated with common types are that they 15 direction of pull of the strip so that any convolutions
are (l) oftentimes large, heavy and cumbersome, (2) of
overlapping and tending to bind Iwith each other are sep
arated.
complicated design, (3) unable because of inertia of their
parts to supply the strip quickly for withdrawal in re
'IThere is still another advantage due to the use of a
sponse to a sudden pull by `a machine or the operator,
flexible guide arm when it is directed to align approxi
(4) cumbersome to load and re-load with a fresh coil, 20 mately tangentially and close to `where the strip is being
(5) require too much space due to their own size or
Withdrawn from the inside circumference of the coil. The
the distance they must be positioned from the machine
guide yarm provides a closed column surrounding the strip
or operator using the strip and (6) they are generally
to prevent it from collapsing or buckling with the result
expensive to manufacture and ship.
that the strip can be conveniently reversely fed back into
It is the principal object of this invention to obviate
the unreeler if necessary by reverse longitudinal feeding
these shortcomings of prior devices by providing an im
of the strip rather than by requiring that the unreeler be
proved unreeler for strip material which can be manu
reversely driven instead which «is a usual case. In fact,
factured small and light weight of extremely simple de
the guide arm can be of sufficient length to extend to a
sign with very low inertia and capable of supplying strip
lmachine such as a strapping machine so that the strip
practically .instantaneously without snagging in response 30 is supported and prevented from buckling for a very
long length.
to sudden pulls by the operator or a machine, and which
is very easy to load and re-load, requires only a small
`For permitting the unreeler to be loaded in a simple
amount of space, can be positioned closely adjacent to
manner, the radial arms are bent vertically upward at
the operator or machine using the strip, is very econom
their ends at right angles to their radial portions. This
ical to manufacture land can be shipped easily and eco
permits the unreeler to be tilted upward to a rest position
nomically even in disassembled condition in a very small
on the ends of the arms. With the unreeler in this posi~
package.
tion, a coil can be slid into position laterally onto the
The unreeler is preferably manufactured primarily of
unreeler, or else the unreeler can be slid around the coil.
aluminum or other light weight material and consists
With the coil in position, the unreeler can be tilted back
basically of a central hub freely journalled on a spindle. 40 to a horizontal position in readiness for use.
The hub is provided with radially extending arms which
Another object of the invention is the provision of an
can be manufactured inexpensively from tubing and they
provide the support on which the coil supply is mounted.
`In order to minimize the effect of inertia, the strip is
Withdrawn from the unreeler from the inside portion or 45
circumference of the coil and, to facilitate the withdrawal
both the action of the flexible guide `arm and the friction
of the coil convolutions themselves as they pass over
each other.
of strip at high speed or by sudden withdrawal, a freely
journalled sleeve is mounted concentrically as part of
the central hub. Upon very sudden and fast strip with
by Ia more detailed description of preferred embodiments
of the invention with reference to the accompanying draw
unreeler having improved braking action elfectuated by
Other objects and advantages should become apparent
ings in which:
drawals, the strip winds onto the sleeve as the central 50
FIG. l is a top plan view of a first embodiment of
coil convolutions contract due to strip withdrawal.- As
an unreeler of this invention;
this occurs, the freely journalled sleeve rotates in re
FIG, 2 is a partial sectional View along the line 2-2
sponse to strip withdrawal in case the strip encircles
of FIG. l and particularly shows the internal construc
tightly enough onto the sleeve.
This prevents abrupt
binding of the strip on the sleeve which would otherwise 55
tion of the hub portions of the unreeler;
occur with a stationary or lixed sleeve and would provide
FIG. 3 is a partial sectional View as viewed along the
line 3-3 of FIG. 2 and shows further details of lthe hub
objectionable resistance to the withdrawal of the strip.
portions of the unreeler;
In addition, there is a certain amount of frictional con
FIG. 4 is a sectional view as viewed along the line
tact of the sleeve on the central hub. Upon sudden strip
4_4 of FIG. 2 »and shows details of the separately ro
Withdrawals, this frictional contact causes the sleeve to 60 tatable sleeve portion of the unreeler;
drive the central hub and thereby assist in the initial rota
FIG. 5 is a perspective view showing a preferred man
tion of the unreeler.
ner of unloading the unreeler with Ia fresh coil.
It may be found that, for the particular application of
FIG. 6 is a partial top plan View of a second embodi
the unreeler, no .sudden or fast strip Withdrawals are con
ment of the unreeler of this invention;
templated. If so, then the sleeve can be mounted in a 65
FIG. 7 is a partial sectional view along the line 7--7
fixed position relative to the central hub. In either case
of FIG. 6 »and particularly shows the internal construc
there is still another distinct advantage; the sleeve pre
tion of the hub portions of the second embodiment; and
vents the strip convolutions from being pulled across the
FIG. 8 is a partial sectional view as viewed along the
central region of the unreeler from one side to the other
line 8-8 of FIG. 7 and shows further details of the
where Ithey would be subject to entangling with each 70 hub portions of the second embodiment.
other and becoming kinked and thereby impair the opera
A first embodiment of the unreeler comprises a base
tion of the unreeler.
plate l for ordinarily resting on the floor or other object
3,052,425
3
on which the unreeler issupported. The base plate 1
is fastened by means of a- nut and bolt 2 to a sleeve 3
extending upwardly from it. The sleeve 3 is provided
edge as shown and the coil and unreeler are brought
together by moving either one toward the other. When
the coil 21 is in full contact with the arms of the un
reeler, the unreeler is again dropped to its horizontal po
with an internal bore 4 into which is positioned the lower
end 5 of an upwardly extending spindle 6. The sleeve Ul sition as shown in FIG. 2.
With the coil 21 positionedfthe coil banding wires or
3 is provided with »an internalbottom surface 7 which
fasteners
38 are removed from the coil and the leading
limits the downward position of the spindle 6. The upper
strip end 34a is pulled from the internal periphery or
surface 8 of the sleeve 3 supports the inner race 9 of
`circumference 35 of the coil and passed through the guide
a ball -hearing 1t? whose outer race 11 is positioned be
spring 33. The outer end 36 of the spring 33 can be
10
tween two circular plates 12 and 13. As best shown
flexed in order to guide the end 34a of the strip in any
in FIGS. l2 and 3, the bottom plate 13 is provided with
direction as needed. The inner end 37 of the spring 33,
three projections 14 which are arranged at three tri
also being flexible, is ordinarily aligned to properly guide
angularly spaced points which act to center the plate 13
the strip end 34a substantially tangentially from the coil
concentrically with the bearing 10. The upper plate 12
is flat overall while the lower plate 13 is provided with 15 21. In its ordinary position with the unreeler at rest,
the inner end 37 assumes a position as indicated in solid
downwardly curved ribs 15 at radial portions adjacent
its periphery which accommodate the inner ends 16 of
a plurality of radially extending arms 17 which lie in
approximately a single plane. These curved ribs 15
lines in FIG. l. The force provided by the spring 33
tending to assume its natural position holds the inner
convolutions of the strip tangentially against the inner
maintain the arms 17 in their radial positions. Even 20 periphery 35 of the coil 21.
The leading end 34a is then led out to the region where
though eight radial arms are shown in the preferred em
it
is
needed and may either be handled subsequently by
bodiment, it is conceivable that a larger or smaller num
an operator who is strapping packages by hand or else
ber can be used as desired without departing from the
it can be fed into a machine of the automatic type which
scope of the invention. It is necessary only that the
draws olf strip from the unreeler as required. As strip
25
convolutions of -the coil mounted on the unreeler have
»is withdrawn from the unreeler, the leading end 34a is
suñìcient bridging support between arms to prevent the
pulled in the direction of the arrow 39. This causes
strip of even the light gauge from falling between the
convolutions of strip to be reduced in diameter and pulled
arms and hampering the operation of the unreeler'.
away from the inner circumference 35 of the coil. As
With the radial arms 17 positioned between the two
plates 12 and 13, screws 18 are provided through con 30 this occurs, the resilient springiness of the strip itself
induces a force in the unreeler which causes it to rotate
centric apertures in both plates 12 and 13 and the arms
in the direction of the arrow 40. As the withdrawal of
to hold the arms individually positioned in their ñxed
strip is continued, several convolutions begin to be re
positions between the plates 12 and 13. Nuts 19 are
duced in diameter and accumulate around the sleeve 27.
provided at the threaded ends of the screws 18 and are
drawn up tightly to clamp the plates 12 and 13 against 35 lf the withdrawal of strip is fast enough and of sufficient
time duration, certain of the convolutions wind tightly
the arms 17 and also against the outer race 11 of the
on the sleeve 27 and cause it to rotate at a speed faster
bearing 10. With thisrarrangement, the two plates 12
than the ring 24 and the other parts of the portions it
and 13 and the radial arms connected thereto provide a
is connected to. As the sleeve 27 rotates, the friction
lcoil support platform freely rotatable on the spindle 6
40 created by the flange 25 of the ring 24» in the groove'26
where supported by the bearing `«10.
The outer ends 2t) of the radial arms 17 are bent verti*
cally upward at right angles to the radial portions of the
arms 17. One purpose of these ends 20 is to centrally
coniine a coil 21 mounted on the unreeler. The upper
portions 22 of the ends 20 are bent radially outward to
facilitate the entry of a coil onto the unreeler.
Secured to the upper surface of the plate 12 by means
of three screws 23 is a concentric annular ring 24. The
of the sleeve 27 provides an additional force tending to
speed up the rotation of the unreeler. Such an acceler
ation of the unreeler assists the withdrawal of the strip
by making more convolutions available faster. As soon
as the pull on the strip end 34a is relieved, the coil and
the arms on which it rests continue to rotate, but because
no more strip is being pulled from the unreeler, the con
tracted convolutions begin to expand outwardly and slide
over each other to apply a frictional force in a direction
two plates 12 and 13, the outer race 11 of the bearing 10
and the ring 24, are therefore integral with each other. 50 opposite 'to the rotation of the coil. This frictional force
-increases progressively as the convolutions come closer
The upper end ofthe ring 24 is provided with an out
together to thereby decelerate the coil. When all of the
wardly extending lip or flange 25 which extends into an
convolutions are finally expanded outward to the inner
internal groove 25 provided in a larger diameter sleeve
circumference 3S of the coil, the coil stops. It may be
or hub 27. The upper end of the sleeve 27 is provided
that, while the unreeler is being used, the strip »is with
with an annular plate 28 held in place by means of three
drawn intermittently, but with such a high frequency that
screws 29 and it extends radially behind the periphery
the unreeler never actually stops rotating. In such a
of the sleeve 27. There is no actual driving contact be
case, repeated intermittent expansion of the inner con
tween the ring 24, which is rotated when the plates 12
volutions of the coil provide intermittently braking ac
and 13 are rotated, yand the sleeve 27, but, due to friction
between the flange 25 and the groove 26, the sleeve 27 60 tion which `keeps the speed of the unreeler slow enough
that the coil convolutions are always under control and
is ordinarily rotated with the ring 24.
untangled.
The upper end of the lspindle 6 is curved Áfirst laterally
The fact that the sleeve 27 may rotate upon quick or
and then downwardly in a semi-circular path and termi
sudden withdrawals of the strip from the coil, faster
nates at its free end 30 in a region slightly -above the
level of the ordinary top height surface 31 of a coil 65 than the ring 24, has the obvious advantage that it pre
vents diñiculty in the operation of the unreeler due to
positioned on the unreeler. This free end 30 of the
abrupt binding or resistance to strip withdrawal which
spindle 6 is provided with a clamp 32 which supports a
spirally wound spring 33 at its mid-point. The spring
33 is used as a guide through which the strip 34 from the
coil 21 passes.
As shown in FIG. 5, in order to load a fresh coil 21
onto the unreeler, the unreeler is tilted from a horizontal
would occur if the sleeve could not rotate. However, the
sleeve 27 serves another function because of its central
location. It prevents the strip convolutions from being
pulled across the central region of the unreeler from one
side to the other where they would be subject to entan
gling with each other and becoming kinked and thereby
position as shown in FIG. 2 to a position as shown in
impair the operation of the unreeler. -Even though not
FIG. 5. In the new position, the coil holder stands on
two of its radial arms 17. Next, the coil 21 is stood on 75 shown, the sleeve 27 can be fixed to the ring 24. If so,
5
3,052,425
the advantages are not so great, but it is adequate for
use where no sudden or fast strip withdrawals are contem
plated since it still prevents crossover of the coil convolu
tions to where they can entangle with each other and kink.
In use, it has been found that the unreeler of this inven
tion c-an be used very close to a machine or an operator
and does not require a long free length of strap between
the unreeler and the point of use as other unreelers do
6
arms 108 in the same manner as coil 21 Shown for the first
embodiment of the invention.
In addition, the ends
124 of the arms 108 are identical in shape to the arms
17 of the first embodiment of the invention so that the
unreeler can be tilted to rest on these ends of the arms
while loading the unreeler with a fresh coil of strip
material.
Functionally the unreeler operates in the same manner
for purposes of extra slack take-up.
as the first embodiment. The most distinctive difference
Further, the flexible guide arm 33 can be made long 10 between the two embodiments is only in the hub por-tions
enough so that its exit end 36 guides the strip material
embodying the action of the sleeve 118 which is elfec~
from the unreeler all the way to the machine or place
tively journalled on the smaller sleeves 117 instead of
where it is used. The guide arm then provides a closed
being journalled by means of a tongue and groove ar
column surrounding the strip to prevent it from buckling
rangement as in the iirst embodiment. Also, the sleeve
with the result that the strip can be conveniently reversely 15 118 is in frictional contact at its lower rim with the upper
fed back into the unreeler if necessary by reverse longi
surface of the plate 106 so that any rotation of the sleeve
tudinal feeding of the strip rather than by requiring that
110 will tend to frictionally drive the plate 106 and its
the unreeler be reversely driven instead.
connected parts. Likewise, any frictional force associated
In addition, the unreeler is of such simple design that
with the smaller sleeves 117 will also add to this tendency.
it can be shipped in a dismantled condition in a very small 20 In the ñrst embodiment of the unreeler, the tongue and
package and assembled after delivery in only a few min
groove region provides frictional driving contact between
utes with simple tools. Due to its light weight and small
the sleeve 27 and the other parts of the unreeler. In addi
size, it can be used from` a suspended position as well as
tion, the lower extremities of the sleeve 27 which are
on the lloor level or adjacent to it. In addition, the ñexi
normally in contact with the upper surface of the plate 12
bility of the end 36 of the spring 33 enables the unreeler 25 also assist in such an unreeler driving tendency.
to be positioned in many locations about the machine or
Although two preferred embodiments of the invention
the site of use so that a convenient place for it can usually
have been shown and described, it should be understood
always be found. Some unre-elers require that the un
that the unreeler of this invention can. be produced in
reeler be positioned in a particular alignment with where
many diiferent ways with a large variety of modifications
the strip is fed into the machine.
30 without departing from the true scope of the invention.
A second preferred embodiment of the unreeler of
We claim:
this invention comprises a base 101 for ordinarily resting
l. An unreeler `for strip material comprising a base
on the floor or other object on which the unreeler is to
provided with a pedestal extending upwardly from it, the
be supported. The base 101 is fastened to a tube 102 ex
pedestal supporting the inner race of a bearing, the outer
tending upwardly from it. The ytube 102 is provided with 35 race of the bearing being clamped between two plates
a spacer collar 103 surrounding it at a level somewhat
which have also connected between them the inner ends
above the base 101. This spacer collar 103 is held in
a ñxed position by means of a pin 104. Supported on this
spacer collar 103` and concentric with it is the inner race
111 of a ball bearing 112 whose outer race 113 is sand 40
wiched between two spaced apart circular plates 105 and
106. ln addition, the inner ends 107 of eight radially
extending arms 108 are also sandwiched between these
two plates 105 and 106 with the extreme inner surfaces
114 of the arms bearing against the outer race 113 of
the bearing 112. The two plates 105 and 106 and the
arms 10S are held assembled by means of bolts 109 and
of radially extending arms whose outer ends are bent
upward at approximately right angles to >their inner ends,
the outer race of the bearing and the two plates and the
radially extending arms serving integrally ‘as a freely
rotatable coil support, said upper of the two plates being
provided with an upwardly extending annulus which in
`turn is surrounded by a sleeve rotatably journalled to it,
said sleeve providing means around which the coil con
volutions contract as the strip material is drawn oif from
the inside of the coil.
2. An unreeler for strip material comprising a base
110. The bolts 109 are short and pass only through the
provided with a pedestal extending upwardly from it, the
plates 105 and 106 and the arms 100. The bolts 110,
pedestal supporting the inner race of a bearing, the outer
of which there are four, are long and extend not only 50 race of the bearing being mounted between two plates
through the plates 105 and 106 and the arms 10S, but
which have also connected between them the inner ends
also through spacer tubes 115 and another plate 116
of radially extending arms whose outer ends are bent up
which is spaced from the plate 106 by means of the spacer
ward at approximately right angles to their inner ends, the
tubes 115. Surrounding each of the four spacer tubes
outer race of the bearing and the two plates and the ra~
115 which are clamped in fixed positions by the bolts 55 dially extending arms serving integrally as a freely rotat
110, are loosely fitting sleeves 117 which are shorter
able coil support, said upper of said two plates being pro
than the spacer tubes 115. This enables the sleeves 117
vided with a plurality of rotatable small sleeves positioned
to be turned freely around the spacer tubes 115. Sur~
radially from the center of the unreeler, and a large
rounding all of the sleeves 117 is a considerably larger
sleeve surrounding all of the small sleeves to be thereby
sleeve 110 which is also shorter than the spacer tubes 60 journalled on them, said large sleeve providing means
115 and large enough -to fit loosely around the sleeves
around which the coil convolutions contract as the strip
117 so that it is free to be rotated by rolling against the
material is drawn olf from the inside of the coil.
sleeves 117. This sleeve 118 serves the same function
3. An unreeler for strip material comprising a spindle,
on this embodiment of the unreeler as the secondary hub
a coil support, having a central hub, with a plurality of
or sleeve 27 of the iirst embodiment of the invention
radial arms extending from it journalled to the spindle,
already described.
Extending upwardly from the tube 102 and extending
perpendicular to -the arms and substantially parallel to
through the plate 116 is an elbow 119 which is connected
Ithe spindle, the said portions forming the largest periph
at its one end to the upper end of the tube 102 and at its
other end to the inner end of the tubular arm 120 whose
outer end is connected -to a T-connector 121. The T
ery of the coil support and being of sumcient length and
in such proper alignment and balance with the spindle
said arms terminating in portions extending substantially
and the rest of the unreeler that the unreeler can be sup
connector 121 has passing through it a helically wound
ported on its edge on two of the said portions adjacent
spring 122 which is identical in function to the spring
to each other for the purpose of facilitating loading of a
33 of the ûrst embodiment of the invention.
coil of strip material onto the unreeler.
A coil 123 of strip material can be positioned on the 75
4. An unreeler for strip material comprising a base
3,052,425
7
provided with a pedestal extending upward from it, a
coil support rotatably journalled on the pedestal, the up
per surface of the coil support having a'hub extending
approximately perpendicular to the plane of the coil sup
port, the hub having a cylindrical Wall concentric with the
center of rotation of the coil support and provided
around its upper end With a radial flange extending paral
lel to the plane of the coil support, the cylindrical Wall of
said hub extending substantially continuously from the
upper surface of the coil support to the >flange and pro 10
viding means around which the coil convolutions con
tract as the strip material is drawn olf from the inside
of `a coil supported by the coil support, said pedestal ex
which deliects toward said central hub by a force result
ing from the coil convolutions contracting around said
central hub as the strip material is Withdrawn.
6. An unreeler for strip material comprising a base
provided with `a pedestal extending upward from it, the
pedestal provided with a coil support rotatably journalled
to it, the upper surface of the coil support having a hub
extending approximately perpendicular to the plane of
the coil Support, the hub having a cylindrical wall con
centric with the center of rotation of the coil support
and provided around its upper end with a radial ilange
extending parallel to the plane of the coil support, the
cylindrical Wall of said hub extending substantially con
tinuously from the upper surface of the coil support to
the iiange and providing means around which the coil
convolutions contract as the strip material is drawn oft
from the inside of a coil supported by the coil support,
tending upwardly through said central hub to terminate
in >a free end in a region approximately level with the
upper surface of a coil positioned on said coil support,
said free end being provided With a guide for the leading
said pedestal extending upwardly through said central
end of the strip material being Withdrawn from said
hub to terminate in a free end in a region approximately
coil.
level with the upper surface of a coil positioned on said
5. An unreeler for strip material comprising a base pro
coil support means, said free end being provided with a
vided With a pedestal extending upward from it, a coil
guide for the leading end of the strip material being With
support rotatably journalled on the pedestal, the upper
drawn from said coil, said guide being in the form of a
surface of the coil support having a hub extending ap
»resilient tube which is aligned to ordinarily urge the strip
proximately perpendicular to the plane of the coil sup
port, the hub having a cylindrical Wall concentric with the 25 material against the inner circumference of the coil, but
which deilects `toward said central hub by a torce result
center of rotation of the coil suppoit and provided around
'ing from the coil convolutions contracting around said
its upper end with la radial liange extending parallel to
central hub as the strip material is Withdrawn.
the plane of the coil support, the cylindrical wall of said
hub extending substantially continuously from the upper
References Cited in the ñle of this patent
surface of the coil support to the flange and providing
UNITED STATES PATENTS
means around which the coil convolutions contract as the
strip material is drawn olf from the inside of a coil sup
1,095,096
1,834,159
1,908,073
ported by the coil support, said pedestal extending up
wardly through an aperture located centrally through said
central hub to terminate in a free end in a region approx
35
imately level with the upper surface of a coil positioned
on said coil support, said free end being provided with a
guide for the leading end of the strip material being With
drawn from `said coil, said guide being in the form of a
resilient tube which »is aligned to ordinarily urge the strip 40
material against the inner circumference of the coil, but
Fleck _______________ __ Apr. 28, 1914
King et al _____________ __ Dec. 1, 1931
Spoor et al _____________ __ May 9, 1933
1,913,632
Green ______________ __ June 13, 1933
1,929,568
2,398,639
2,746,716
Spowart _____________ __ Oct. 10, 1933
Heyer ______________ __ Apr. 16, 1946
Zachary ____________ __ May 22, 1956
2,838,280
2,844,334
Eyles _______________ __ June 10, 1958
Luth ________________ __ July 22, 1958
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