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Oct. l5, 1946.
F. czH/lvrFlELDv
2,409,543 .
APPARATUS FOR SHRINKING FABRICS
Filed Aug. 28, 1944
5 Sheets-Sheet 2
0er. 15, 1946.>
F. 'CHATFIELD '
2,409,543
APPARATUS FOR SHRINKING FABRICS
Filed Aug. 28, 1944
3 Sheets-Sheet 3
AvvozNEs/s
Patented Oct. 15, 1946
2,409,543
Unirse STATES PATENT OFFICE
APPARATUS FOR SHRINKING> FABRICS
Franklin Chatñeld, Minneapolis, Minn., assigner
to Munsingwear, Inc., Minneapolis, Minn.,` a
corporation of Delaware
Application August 2s, 1944, serial No. 551,576
10 Claims.
(Cl. 26-18.5)
1
This invention relates to an improved appa
ratus for shrinking fabrics after they have‘been
through the usual processing, following the con
struction or knitting of the fabric.
In the manufacture of textile fabrics, after the
threads or yarns have been knitted or woven or
otherwise made into a'fabric, the resultant fab
ric is usually processed before> it is made into
garments. Such processing may include bleach
ing, dyeing, frequent washing and drying, and
other Well known operations, during which time
the fabric is usually maintained under tension.
The tension thus applied to the fabric elongates
2
garments may readily be washed or laundered
without any danger of shrinking.
An important feature of the present invention
therefore is to provide an improved apparatus
for pre-shrinking fabrics, comprising means for
conveying the fabric along its path of travel with
out exerting a pushing or pulling action thereon,
the fabric being so manipulated as it travels
through the apparatus that a plurality of small
folds or Wrinkles are periodically formed in the
fabric traversely thereof, which wrinkles are then
removed by gently straightening the fabric in
the direction of its travel without in any way
stretching `or tensioning the fabrics, and whereby
the fibers of the threads or yarns beyond their
normal condition. Unless the fibers of the yarns 15 the fabric is continually alternately transversely
wrinkled and de-wrinkled as a result of such
or threads are restored to their normal relaxed
periodic transverse folding or wrinkling of the
or free condition in the finished fabric, the gar
fabric and subsequently straightening it, which
ments made from the fabric are very likely to
shrink from washing operations. To avoid such
permits the fibers of the threads and yarns of
subsequent shrinkage of the fabric the fabric is 20 the fabric to freely return to their original free
usually put through a pre-shrinking process de
relaxed condition, as the material passes through
the novel apparatus herein disclosed.
signed to restore the threads or yarns, so far as
A further object of the invention is to provide
possible, to their normal relaxed condition in the
such an apparatus of very simple and inexpensive
finished fabric,
y Various forms of apparatus has heretofore been
`utilized to restore the fabric to its normal free
construction, comprising a heated chamber hav
ing a plurality of tiers `of conveying means ar
condition, whereby the garments made therefrom
ranged therein each of which comprises a plu
will not be likely to shrink when washed, but in
most such apparatus the fabric is usually con
veyed along its path of travel by a pulling action,
rality of spaced rotary conveyer elements adapt
ed to receive and convey the fabric along each
l tier, and certain of said conveying elements op
erating at a relatively higher peripheral speed
and in some instances the fabric is simultane
than adjacent elements, whereby a plurality of
ously, as it moves forwardly, alternately later
closely spaced transverse wrinkles or folds are
ally expanded and contracted. Such action on
the fabric in an attempt to pre-shrink it has not
formed inthe fabric each time the fabric is dis
proven entirely satisfactory, because in many 35 charged from said higher speed elements onto
the conveyer elements, having a relatively slower
cases it does not completely restore the threads
peripheral speed, and whereby the fabric is con
or yarns of the fabric to their normal relaxed
tinually alternately wrinkled and de-wrinkled, as
condition and, as a result, garments made from
it passes through the machine, without exerting
such fabrics may shrink when the garments are
washed.
‘
40. a pushing or pulling‘action thereon, which per
mits the ñbersof the threads or yarns to readily
The novel apparatus hereiny disclosed is the
freely return to their original or natural free
result of considerable development and experi
and relaxed condition, whereby shrinkage in the
mental work in an attempt to provide an appa
ratus for pre-shrinking fabrics, whereby substan 45 resultant fabric is reduced to the utmost mini
tially al1 of the fibers of the threads or yarns of
A further object is to provide an apparatus of
the fabric are restored to their normal relaxed
the class describedcomprising means for alter
condition in a simple and efñcient manner, and
nately transversely wrinkling and de-wrinkling
without exerting a pulling or pushing action on
the fabric as it travels through the machine, and
the fabric. By thus conveying or feeding the 50 periodically inverting the fabric whereby the web
fabric along its path of travel without a pushing
or strip of fabric being fed through‘the machine
or pulling action, the fabrics of the various
is uniformally treated on all sides.
threads or yarns of the fabric quickly return to
Other objects of the invention reside in the
their normal relaxedl and free condition, Where
nove1 construction of the apparatus, which come.
prises a steam chamber having a plurality of
by when the fabric-is made into garments, the
mum.
'
`
2,409,543
3
4
tiers of conveying surfaces therein which cooper
ate to conv-ey the fabric in a back-and-forth
right hand corner of the chamber 2 through a
chute i3 as shown in Figure 1.
manner through the chamber from one tier to
An important feature of the present invention
resides in the means provided within the chamber
2 for conveying the material therethrough in a
.
the next, preferably in a downward direction, and
whereby the material is frequently inverted as it
travels through the chamber, and at the same
free and relaxed condition and without in any
time the fabric is subjected to alternate wrinkling
and d-e-wrinkling» operations without exerting a
pushing or pulling action on the fabric, whereby
way exerting a pulling or pushing action there
on, whereby the threads constituting the fabric
may, as the fabric travels through the chamber,
return to their normal relaxed condition, or sub
stantially to the condition in which they were be
fore being knitted into the fabric.
The means provided for thus permitting fibers
the fibers of the various threads or yarns con
stituting the fabric may freely return .to their
original relaxed condition inwvhichV they were
before being knit into the fabric, and Where
b-y the nnished or completed fabric, or' the‘gar'->
ments made therefrom, aren'ot- likely to shrink
to^readilyreturn to their normal relaxed condi
tion as the fabric is conveyed through the cham
ber 2', is shown comprising a plurality of tiers
when the fabric or garments are subsequently
of. conveying elements, and each tier is composed
washed; in the arrangement-of» the spaced-disks
of a plurality of closely arranged rows of disks
which constitute the various conveying means
ld and' i5. The disks le are relatively smaller
in the steam chamber, and in the manner of oper
ating said disks whereby the peripheral speed of 20 than the disks I5, and are arranged in groups
A, B, C. and D, which groups are separatedr by
certain of Said disks may be varied to control
the disks l5, as clearly illustrated in Figures 1
the wrinkling and de=wrinkling` actions of the
and 5. The peripheries of the disksV M andv I5
disks upon the fabric;> and‘inv the provision of
are slightly notched or serrated, as indicated in
such an apparatus which is extremely eñicient
and practical in operation; and'which may also 25 Figure 5, to minimize slippage ofy the web on
the peripheries thereof. In the drawings I have
be utilized as a- dryer, in which case all of the
shown each group of disks as comprising three
conveyer disks of the various tiers of fabric con
rows of disks, but it is to be understood that the
veying surface may be operated in a manner to
number of rows of disks in each group may be
cause less Wrinkling and de-wrinkling of the
fabric or toeliminate entirely Wrinkling and de 30 variedwithout departing from the scope of the
invention.
»
wrinkling of the fabric, as the» fabric travels
The disks of adjacent rows are arranged in
through the heated chamber.
over-lapping relation, as best illustrated inV Fig
ther objects ofthe invention will appear from
the following description and the-accompanying
ures 1, 3 and 5, whereby the disks of each tier
drawings andwill be pointed out in the annexed
claims.
of such disks cooperate to provide a continuous
conveying surface extending substantially from
` In the accompanying drawings there has been
one end of the chamber 2 to the other. The disks
may be supported within the chamber as indi
disclosed av structure designed to carry out the
cated in Figure 4, and to facilitate assembling,
various objects of the invention, but it is to be
understood that the inventionl is not confined to 40 the disks, of each row ofr disks, are preferably
secured together as a unit, as shown in Figure 6.
the exact features shown, as various changes
This may readily beaccomplished by suitably se
may be made within the scope of the claims which
curing the disks of each row to a tubular member
follow.
I6, the over-all length of which is such that it
vIn the drawings-z
` Figure l is a vertical sectional _view through 45 may readily be fitted between the steam jackets
9 of the side walls 5 and 6 of the chamber 2, as
shown in Figures 3 and 4.
The disk M isshown secured to suitable shafts
` Figure 2 is an end View of Figure 1 showing
| ‘I which extend transversely through the cham~
the' drives for the various tiers of disks;
Figure 3 is a sectional planL view substantially 50 ber 2~and suitable openings provided in the steam
jackets 9 and have their end portions extending
on the line 3--3V of Figure 1;
through suitable bearings indicated at I3 and I9
Figure 4 is an enlarged detail sectional View
in Figure- 4.
on the line ë-ß of Figurev 1;
As all of the shafts Il and their supporting
' Figure 5 is an enlarged detail sectional View
means are substantially identical in construction,
showing the manner of delivering the Web or
but one will be described in detail.
fabric onto the conveyer disks from the delivery
the apparatus shcwing'the'general arrangement
ofthe conveying means therein;
’
To facilitate mounting- the shafts and disk
units in the chamber 2, suitable spacing sleeves
20 and 2| are shown fitted onto the opposed ends
removed from the apparatus.
In the selected embodiment' of the invention 60 of the shafts and are received in the bearings I8
and |9, respectively. Each sleeve abuttingly en
herein disclosed there is illustrated in Figure vl,
gages one end of the tubular member I5. A
for purposes of disclosure, a heated chamber 2
bevel gear 23 is shown secured to one end of the
defined by upright walls 3, d, 5 andV ii', a top wall
shaft and a suitable washer 24 may be inter
i and bottom wall 8. The four upright `walls'
posed between the hub'of the gear 23 and the
>and the top wall ‘i are provided with inner steam
adjacent end of the sleeve 20 adapted to engage
jackets 9 having suitable steam coils _Il therein,
the outer end of the bearing I8 and prevent axial
as indicated in Figures 1 and 5, which are con
movement of the shaft assembly in one direction.
nected to a suitable supply of steam, not shown.
A similar washer 25 is provided on- the opposite
The outer walls 3 to 3', inclusive, are constructed
end ofthe shaft'l‘l and engages the adjacent end
of a suitable non-conductive material whereby
of the sleeve 2|. A nut 25 is received in threaded
the temperature in the chamber may readily be
engagement with the end of the shaft and serves
retained at‘the desired figure.
l
to fixedly secure together as a unit, the shaft I1,
A suitable‘delivery conveyerî I2 is arranged to
disk-supporting member i6, sleeves 20 and 2|,
convey the material to be treated into the upper
and the Washers 24 and 25, as will readily be
conveyer;
and
'
’
Figure G is a view showing one of the disk units
2,409,543
6
understood by reference lto Figure 4. The wash
ers 24 and 25 prevent endwise movement of the
shaft I'I.
The above described shaft-supporting means is
merely illustrative, as obviously other means may
be provided for removably supporting each shaft
Il and the disk assembly carried thereon. .
or process the fabric in its travel through the
chamber, to permit the fabric to shrink to sub
stantially its normal condition in which it _was
prier tobeing passed through the usual process
ing necessary before being delivered to the cham
ber ~fior pre-shrinking.
`
, Another feature of the invention resides in
the manner in which the disks of the various
Each row of relatively larger disks I5 are shown
tiers are driven so as to cause the web of fabric
secured to a similar tubular member I6 mounted
on a shaft 28 similar to the shaft I'I. The shafts 10 to travel back-and-forth in the chamber in its
passage from the delivery conveyer I2 to the
28 are shown mounted in opposed relation to the
discharge conveyer 29. To cause the fabric to
shafts I'I, as illustrated in Figure 4, for reasons
subsequently to be described.
Another important feature of the invention re
sides in arranging the disks in a plurality of tiers .
of conveying disks within the chamber, or, one.
over another, which is so operated as’tc convey
the web back-and-forth through the chamber
from the upper right hand corner thereof, when
viewed as shown in Figure 1, to a suitable dis
charge conveyer 29 which conveys the processed
or pre-shrunk fabric from the chamber 2 to a
suitable receiving means, not shown.
By thus
passingtheweb from one tier to another in a
downward direction, as the fabric travels through
the chamber, the web of fabric is periodically in
verted, as will readily be understood by reference
to figure 1. '
To assist the material to shrink to its normal
condition when passing through the chamber a
plurality of steam pipes 30 are preferably pro
vided over each tier of disks. Each pipe 3l] has a
plurality of discharge orifices in its lower wall
travel back-and-forth through the chamber 2,
the disks of adjacent tiers are driven in opposite
directions, as indicated by the arrows in Fgure 1.
To thus operate the disks, all of the shafts I‘I
cf each tier are shown driven from a shaft 3|
mounted in suitable :bearings exteriorally of the
casing of the apparatus and having bevel gears
32 therein meshing with the bevel gears 23 se
cured to the various shafts Il of each tier, as
will b-e best understood by reference to Figure 3.
In like manner, the shafts ‘28 of the relatively
larger disks I5 are driven by a shaft 33 provided
at the opposite side of the apparatus through
similar bevel gears 23 and 32.
The disks I5 of
each row of such disks are secured in ñxed rela
tion to a tubular member I5, similar to the ones
the disks Irl are secured to and the assemblies
of disks l5 are secured to their respective shafts
in a manner similar to the assemblies of disks I4,
as shown in Figure 4'.
To thus reverse the direction of rotation of the
disks of adjacent tiers, all of the disks I4 are
simultaneously driven by a suitable chain B4
engaging sprockets 35 secured to the shafts 3I.
@ne run of the chain 34 engages the sprockets 35
‘ Another important feature resides in the means
in the manner shown in Figure 2, whereby the
provided for alternately transversely wrinkling
disks of adjacent tiers will rotate in opposite
and de-wrinkling the fabric as it travels through
the heated chamber 2. To thus alternately wrin 40 directions, 'thereby causing the web to travel in
a back-and~forth direction through the chamber
kle and de-wrinkle the fabric, the groups of disks
2 as hereinbefore stated.
I4 of each tier are rotated at slightly lower periph
The shafts I'i are shown driven by a single
eral speed than the relatively larger spacing disks
chain 3ft having a running connection with a
I5. The peripheral speed of the larger disks I5
corresponds substantially to the speed of travel 45 drive sprocket 35 secured to a drive shaft 37
mounted in suitable bearings, not shown. An
of the web‘or fabric delivered to the disks I4
idlersprocket 38 is provided adjacent the upper
of the first group A by the conveyer I2. Because
end of the chain 34 to prevent outer run of
of the peripheral speed of the disks I4 being
adapted to direct hot steam against the fabric
as it is conveyed back-and-forth through the
chamber by the tiers of disks I4 Vand I5.
lower than the delivery of the material thereto,
the chain engaging the sprockets 35.
rf‘he shafts 33 which operate the relatively
a plurality of small transverse wrinkles or folds 60
larger disks I5 are each provided at one end
are formed in the fabric as it is delivered thereto,
with a sprocket 39 having running connections
with a chain 4I similar to the chain 34 provided
at the opposite side of the apparatus.
The shafts 33 and bevel gear drives connecting
pushing »action on the fabric, whereby the fabric 55
them with their respective shafts 28 are best
remains in a wrinkled condition as it travels ’over
shown in Figure 3. The lower portion of the
the disks of each group A, B, C, or D.
chain 4I as a running connection with a
When the web of fabric engages the perípheries
sprocket 42; secured to a shaft 43 which in turn
ci the relatively larger disks I5 from group A
of the smaller disks I4, the wrinkles therein are 60 is driven by a chain 44 from a variable speed
unit, generally designated by the numeral 45.
removed as a result of the relatively higher
The variable speed unit 45 is driven from the
peripheral speed of the disks I5, as shown in
drive shaft 31 by a shaft 46 through suitable
Figure 5. As the web is delivered from the peri-`
bevel gear drives 41, as indicated in Figure 3.
pheries of the disks I5 onto the next adjacent
group B of disks I4, the web lis again trans 65 'ljhe drive shaft 3l may be driven from a suit
as best indicated in Figure 5. The wrinkled fabric
is carried from one row of disks I4 to the next of
each such group without exerting a pulling or
versely wrinkled.
Such periodic wrinkling and
de-wrinkling of the fabric `continues until the
fabric is delivered onto the receiving conveyer
29, and at the same time both sides of the fabric
are continuously being subjected to the hot steam 70
ischarging from the pipes 30, as a result of the
fabric being inverted each time it is delivered
from one tier of disks onto the next.
The number of tiers of'disks and the length of
the chamber 2 are such as to sufficiently treat`
able motor 48.
‘
The peripheral speed of the disks I5 is im
portant with relation to the traveling speed of
the conveyer belt I2, ybecause the disks I5 must
remove or transfer the fabric from the groups
of smaller disks I4 to adjacent groups at identi
cally the same speed asthe fabric is delivered
onto the first group Aof disks I4 ‘from the con
veyer I2. Should the `conveyer I2 deliver the
fabric to the first group A faster than it is re
2,409,543:
7
moved therefrom «by the adjacent-rowcf disks I5,
the fabric.willveventually pile up or accumulate
on the disks It; On the other hand, should the
disks I5 remove the fabric from the first group
of ‘disks Ill- faster than it is deliveredthereto by
the conveyer i2, the fabric would'be placed under
az-tensionwhich would defeat one of the objects
of thel present' invention. It is therefore essen
tial that- the speed of' the> conveyer I2 and the
bythe fabric is inverted,` aswill be understood.
byreference to Figure l. The opposite side of
the fabric is then exposed to the steam discharg
ing from theLdistributing pipes. 30 interposed be
tweenthedirsi;- and secondtiers of ’conveyer'disks
The fabric thus continues to travel back-and
forth and' downwardly. through the chamber ‘2.
untilit is. delivered-onto. the discharge conveyer
29; which removes. it'V from’ the chamber 2 for
peripheralrspeed of the disksl IE’ìbe synchronized l() delivery onto- a suitable receiving means, not
and sofrelated` tothe Vspeed of the disks I4 that
shown.
the material, when delivered onto each group of
From the foregoing it will-be noted that the
disks lli, will be> transversely wrinkled or folded
as shown in Figure 5, and when the material en
gagesY the peripheries' of the relatively larger
disksfI 5, such wrinkles or folds are removed from
the web, as shown in Figure 5.
For practical purposes the conveyer I2 may be
driven directly from the secondary drive shaft
4-31 of the relatively larger disks I5, whereby it
will operate in timed‘relation thereto.
To thus drive the conveyer I2 from the sec
disks and the novelfmannerïinwhich they are
driven provides aconveying means Within the
chamber" 12 capable of conveying the fabric
through the chamberfwithout imparting any pull*
ing'or. pushing actionsthereon, and by. repeatedly
wrinkling and de-wrinkling the fabric, and in
verting- it» as it travels through the chamber 2,
all- of the'fibers of tlielvarious threads. constitut
ing the body of the fabric are so "worked” or
flexed that they- gradually> return to their normal’
ondary drivefshaft «i3- and4 upright shaft Q9 is
more or less crinkled condition whichcauses the
shown having itslower end drivingly connected
fabric to shrinksufliciently in its passage through
to the shaft
by suitable bevel gears 5i, and 25 the chamber 2', that when it is subsequently made
the upperend ofthe shaft fail is connected to the
into garmentathe garments areY not’. likely to
shaft~52of theupper end ofthe conveyer l2 by
shrink asa result of washing and'laundering.
similar' bevel gears 53;
By varying the relative speed of the disks I 4
All of the disks Iii in the various tiers operate
and i5; the apparatus mayy be used for pre
at the same speed, and their speed is determined
shrinking fabricsoffvarious kinds, it being under
by the Írate of speed at which the fabric may be
stood that' some ‘fabrics have a tendency'to shrink
conveyed through the chamber» 2- to obtain the
more than others.
desired results. With a gir/_en fabric, the disks Iii
The' novel apparatus-«herein disclosed may also
may rotate at a constant speed, the disks in ad
be used" as a dryer for" drying fabrics received
jacent tiers rotating in opposite directions, as
from a washer orsome other wet processing op
indicatedby- the arrows in Figure l, which is ac
erations.
complished byl the chain- drive shown at the left
WhenVI so utilized all of the disks I4-and I5 of
hand'side of Figure 2.
each-tier may» be operated at the same peripheral
The variable rspeed unit 45 is important in that
speed'and at a speed substantiallyy equal to the
it makes-it possible to readily and conveniently 40 delivery of the Afabr-ic to the upper tiers of disks
control’ the degree of wrinkling or transverse
from the conveyer I2î.î When the disks are oper
folding of the fabric as it is delivered to each disk
group A, B, C and- D. In other words, the speed
of the secondary drive shaft ¿3 may readily and
conveniently be controlled to vary the size of
the wrinkles or folds te that best suited for the
particular fabric being pre-shrunk in its passage
through the chamber 2. The variable speed unit
d5 maybe of any well known construction ap
plicable for the purpose.
In the operation ofthe novel apparatus here
in disclosed, the fabric is delivered onto the first
group A of disksv I4 by the conveyer I2, usually
ated- at the same peripheral speed the web of
fabric is-fed through the chamber 2 in a-iiat> con
dition, and`iscontinuously inverted as it passes
ï“ from one tier'of disks onto the next in its travel
downwardly through the chamber to the dis
charge' conveyer 29S.'
.
It is also to be understocd‘thatwhen used as a
drier the supply ofî steam to the pipes Sil'is shut
off‘ whereby the» chamber will contain amore or
less-dry‘heat. To increase the eiiiciency of the
apparatus-as a dryer, a plurality of suitable air
nozzles Eli; 55' and 56 may be provided'at one end
of‘the» chamber 2i adapted to direct blasts of
‘i heated air between adjacent tiers of disksfrom
in a wet condition. As it is delivered thereto it
is transversely wrinkled or folded, as best shown
in Figure 5, in which condition it passes from
one end of the chamber. Similar nozzles 5?? and
one row of disks it onto the next' in group A,
58 may be »provided at the opposite end-0f the
until it engages the peripheries of the adjacent
chamber adapted to direct blasts of heated air
row of relatively larger disks I5. The disks I5
between other tiers of disks. The heated air thus
pick up the material from group A and trans 60:1 directedibetween the various tiers of disks may
fer or deliver it onto the'disks ofl group B at a
exhaust througha sui-table vent 5s connected with
relatively higher speed than the travel'. of the
fabric over the disks i4, whereby the transverse
wrinkles orf folds in the fabric are momentarily
removed from the fabric. The fabric, however,
is again wrinkled when it is delivered onto the
disks of group B, and when passing from group
B'to group C, it is again de-wrinkled. In this
manner the fabric is continuouslyv alternately
wrinkled and de-wrinkledï as itpasses over each
tierl of conveyer disksand at Vthe same time it is
subjected to the steam discharging from the
steam distributing pipes 30.
the interior ofthe chamber 2, as, for example,
throughthe upper wall l. Heated air may be
supplied tothe chamber through the nozzles 54
to 58, inclusive, by a suitable air circulating means
orffan, not shownv in the drawings.
It willV be apparent to those skilled in the art
that I'have'accomplished at least the principal
objects of my invention, and it will also be ap
parent to those skilled in the art that the embodi
ments hereinidescribed‘ may be variously changed
and modiñed without departing from the spirit
of the invention,- and that the invention is cap
able of usesand has advantages not herein spe
From the upper tier of disks the material is
delivered onto thenext lower tier of disks where 75 ciñcally described; hence. it willbe appreciated
2,409,543
9 j
that the herein disclosed embodiments are illusn
trative'only, and that my invention is not limited
ripheral speed than the intervening rows of disks,
whereby said disks will alternately condense and
thereto.
expand the fabric as it passes through the steam
chamber, and means for reversing the traveling
movement of the fabric through the chamber and
'
I claim as my invention:
l. In an apparatus for shrinking textile fabrics,
a steam chamber, a plurality of closely spaced
simultaneously inverting it.
rotatable disks in said chamber, all of said disks
6. In an apparatus of the class described, a
being disposed beneath the path of travel of the ‘
steam chamber, a plurality of vertically spaced
fabric and having their peripheries arranged Vto
tiers of shafts, the shafts of each tier being ar
convey the fabric through the chamber in a slack 10 ranged in spaced parallel relation, a plurality of
and relaxed condition and without exerting a
disks secured to each shaft of each tier and dis
pushing or pulling action thereon, certain of said
posed in spaced relation on their respective shafts,
disks having a relatively higher periphera1 speed
the disks of said tiers of shafts having serrated
than others and cooperating with said other disks
edges cooperating to provide a plurality of ver
to continually alternately transversely wrinkle 15 tically spaced conveying surfaces adapted to con
and dewrinkle the fabric as it passes through the
vey the fabric through the chamber without ex
chamber.
erting a pushing or, pulling action thereon, and
2. In an apparatus of the class described, a
means for simultaneously driving alternate tiers
-steam chamber, a plurality of shafts mounted in
of said shafts in one direction and the shafts of
said chamber in spaced parallel relation, a plu 20 the remaining tiers in the opposite direction,
rality of disks secured to each shaft and arranged
whereby the fabric will have a back-and-forth
in closely spaced relation thereon, the marginal
travel through the chamber, and all of the disks
edges of the disks of each adjacent pair of shafts
constituting each conveying surface being dis
being disposed in overlapping relation, and the pe
posed beneath the path of travel of the fabric
ripheries of all of said disks cooperating to con 25 being conveyed thereby, whereby the fabric is
vey the fabric through the chamber in a free and
conveyed over each conveying surface with a
relaxed condition and without exerting a push
wavy»like motion and with the fabric completely
ing or pulling action thereon.
relaxed throughout its travel.
3. In an apparatus of the class described, a
7. In an apparatus of the class described, a
steam chamber, a plurality of shafts mounted in 30 steam chamber, a plurality of vertically spaced
said chamber in spaced parallel relation, a plu
tiers of shafts, the shafts of each tier being
rality of disks secured to each shaft and arranged
arranged in spaced parallel relation, a plurality
in closely spaced relation thereon and whereby
of disks secured to each shaft of each tier and
said disks are disposed in rows transverselyof the
disposed in spaced relation on their respective
chamber, the marginal edges of the disks of each 35 shafts, the disks of said tiers of shafts cooperat
adjacent pair of shafts being disposed in stag»
gered and overlapping relation, the peripheries of
ing to provide a plurality of vertically spaced
conveying surfaces adapted to convey the fabric
through the chamber without exerting a pushing
through the chamber in a free and relaxed con
or pulling action thereon, and means for simul
dition and without exerting a pushing or pulling 40 taneously driving alternate tiers of said shafts in
action thereon, and spaced rows of said disks op~
one direction and the shaftsl of the remaining
erating at a relatively higher speed than the in
tiers in the opposite direction, whereby the fabric
tervening rows of disks, whereby all of said rows
Will have a back-and-forth travel through the
of disks will cooperate to continually alternately
chamber, and certain rows of disks in each tier
transversely wrinkle and dewrinkle the fabric as
being relatively larger in diameter than the disks
it passes through the chamber.
of adjacent rows in said tier and having a rela»
all of said disks cooperating to convey the fabric
4. In an apparatus of the class described, a
steam chamber, a plurality of shafts mounted in
said chamber in spaced parallel relation, a plu
rality of disks secured to each shaft and arranged 50
tively higher peripheral speed than the adjacent
smaller-disks, whereby all of said disks will co
operate to continuously alternately condense and
expand the fabric along its length as it passes
in closely spaced relation thereon, the marginal
edges of the disks of each adjacent pair of shafts
being disposed in staggered and overlapping rela
tion, the peripheries of all of said disks cooperat
ing to convey the fabric through the chamber in
55
a free and relaxed condition and without exerting
through the chamber.
a pushing or pulling action thereon, spaced rows
disposed in spaced relation on their respective
shafts, the disks of said tiers of shafts cooperat
ing to provide a plurality of vertically spaced con
veying surfaces adapted to convey the fabric
of said disks being relatively larger in diameter
and having a relatively higher peripheral speed
than the intervening rows of disks, whereby said
disks will alternately condense and expand the 60
8. In an apparatus of the class described, a
steam chamber, a plurality of vertically spaced
tiers of shafts, the shafts of each tier being
arranged in spaced parallel relation, a plurality
of disks secured to each shaft of each tier and
through the chamber without exerting a pushing
fabric as it passes through the steam chamber.
or pulling action thereon, means for simultane
5. In an apparatus of the class described, a
ously driving alternate tiers of said shafts in one
steam chamber, a plurality of shafts mounted in
said chamber in spaced parallel relation, a plu 65 direction and the shafts of the remaining tiers
rality of disks secured to each shaft and arranged
in the opposite direction, whereby the fabric will
in closely spaced relation thereon, the marginal
have a back-and-forth travel through the cham
edges of the disks of each adjacent pair of shafts
ber, certain rows of disks in each tier being rela
being disposed in staggered and overlapping rela
tively larger in diameter than the disks of adja
tion, the peripheries of all of said disks cooperat
70 cent rows in said tier, and means for varying the
ing to convey the fabric through the chamber in
speed of said larger disks independently of the
a free and relaxed co-ndition and without exert
smaller disks whereby the peripheral speed of
ing a pushing or pulling action thereon, spaced
the larger disks may be so controlled relative to
rows of said disks being relatively larger in
the peripheral speed of the smaller disks as to
diameter and having a relatively higher pe 75 cause all of said disks to continually alternately
2,409,543
11
12
transversely wrinkle and dewrinkle the fabric as
10. In an apparatus for shrinking fabrics, a
steam chamber, a plurality of shafts mounted in
groups thereon, a single spacer shaft separating
each adjacent pair of said groups of shafts, a
plurality of like disks mounted on the shafts of
it passes through the machine.
«
9. In an apparatus for shrinking fabrics,
steam chamber, a plurality of shafts mounted in
groups therein, a single spacer shaft separating
each adjacent pair 0f said groups of shafts, a plu
rality of like disks mounted on the shafts of each
group and spaced apart lengthwise of their re
spective shafts, a plurality of relatively larger
dsks secured to said spacer Shafts, means for
driving all of the shafts at the saine time and in
a direction to feed the fabric through the charn
ber, means for feeding the fabric into feeding
contact with the peripheries of said smaller disks
at a faster rate oi speed than the peripheral
speed of said disks, whereby a plurality of rela~
tively small transverse folds ,or wrinkles are mo
mentarily formed in the fabric, and means
whereby the peripheral speed of the larger disks
may be made relatively greater than the periph
eral speed of the smaller disks, whereby the fabric
is partially elongated each time it passes over a
row of said larger disks from one disk row to the
each group and spaced apart lengthwise of their
respective shafts, a plurality of relatively larger
disks secured to said spacer shafts, means for
driving all of the shafts of said group at a given
speed and in a direction to feed the fabric through
the chamber, means for driving the spacer shafts
at a relatively higher speed than the remaining
shafts, means for feeding the fabric into feeding
contact with the peripheries of said smaller disks
at a faster rate of speed than the peripheral speed
of said disks, whereby the fabric is condensed or
transversely wrinkled, and said large disks oper
ating -to convey the fabric from the disks of one
shaft group to the disks of an adjacent shaft
group at a relatively higher feeding speed whereby
the fabric is extended or dewrinkled as it is fed
from one disk group to the next, said larger disks
and groups of disks cooperating to continually
alternately transversely Wrinkle and dewrinkle
next, and whereby said smaller and larger disks
will cooperate to continuously alternately con 25 the fabric as it travels through the chamber.
dense and expand the fabric as it travels through
the machine.
FRANKLIN CHATFIELD.
'
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