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Патент USA US2407108

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S¢Pt- 3, 1946-"
'
_J.‘E. SPALDING) Ef AL
‘
2,407,108 .
METHOD AND APPARATUS FOR CRIMPING FILAMENTARY MATERIALS
. Filed Oct. 4, 1941
_
-2 Sheets-Sheet 1‘
‘
BY
INVENTOR.
.JUHN E. SPALJJ/NE
DAN E. W/EKER’
ATTCIR'N
'
'sept. 3, '1946.
2,407,108
J. E. SPALDING ET AL
'METHOD AND APPARATUS FOR CRIMPING FILAMENTARY MATERIALS
Filed Oct. 4, 1941
2 Sheets-Sheet 2
2/
INVENTOR.
BY
.JUHN E. EPALD/NE
17
B. W/EKER'
@ I. '
_
ATTUIPN
Patented Sept. 3, 1946
2,407,108
UNITED ‘STATES ‘PATENT OFFICE I
$407,108
METHOD AND APPARATUS FOR CRIMPING
FILAMENTARY MATERIALS
JohnE. Spalding, Nitro, and Dan B. Wicker, Dun
.bar, W. Va., assignors to American Viscose Cor
poration, Wilmington, Del., a corporation of
Delaware
Application October 4, 1941, Serial No. 413,702
17 Claims. (Cl. 19-66)
1
This invention relates to crimping ?lamentary
material, especially’in the form of staple ?ber.
2
' materialprojects and adjacent the end of which
it is out once every revolution by the knife 5.
The disk 2 is supported in the bearings 6 and ‘l
and is rotated by means of the shaft 8 upon which
is ?xed by pulley 9 operated by means of'a motor
not shown. Nearby the cutting position, there
is provided a flanged drum I0 mounted for rota
tion upon the shaft l l which is provided with the
pulley I! for operation by means of a belt and
Figure 1 is a plan view of one embodiment of
10 motor not shown and mounted in bearings 13
apparatus of the invention,
and M in‘ position above the open end of a duct
Figure 2 is an elevational view of the apparatus
15 for conveying the cut and crimped ?bers from
of Figure 1, partially in cross -section,‘
It is an object of the invention to provide a
novel method of crimping staple ?bers and to pro
vide novel apparatus for e?ectuating the method.
Further objects of the invention will appear from
the drawings and the description hereinafter.
In the drawings, illustrative of the invention,
Figure 3 illustrates a plan view of a modi?ed
the scene of operation. A suitable pipe connec
tion I6 is provided with a ?exible connection IT
form of apparatus, and
Figure 4 is an elevational view of the apparatus 15 to asupply of compressed air and is provided also
with a slot-like nozzle l8 arranged adjacent the,
of Figure 3.
‘
periphery of the drum to blow any ?bers sticking
In general, the method of the invention com
thereto down into the open end of the duct.
prises imparting a high velocity to a staple ?ber
The path of travel of the cut ?ber bundle is des
bundle longitudinally thereof and causing the
bundle to strike endwise against an obstruction.‘ 20 ignated by the dotted lines in Figure 1, and sev
eral distinct ?ber bundles are‘ shown following
The impact gives rise to compressive forces which
each other through the various positions until
effect a crimping of the ?bers along their length.
impingement against the ?ange and the periphery
The ?bers may be softened by the application of '
of the drum ll! takes place. As will be noted, the
a suitable softening agent before crimping and
position of the ?ber bundle is such at the time
they may have the crimp set therein afterwards
of impingement as to be substantially endwise
by removal of the softening agent. If desired,
with ‘respect to the ?ange l9 and substantialbr
other velocity components may be imparted to the'
parallel to the body of the drum l0. While si
?ber bundle, it being only important that one
multaneous impingement of the ?ber bundle lat
component of the compound velocity imparted to
the staple ?ber bundle be longitudinally thereof 30 erally against the periphery of the drum at the
time of impingement endwise against the ?ange
and that the obstruction be arranged so that the
impact occurs substantially endwise of the bundle ‘
is not essential, nevertheless, it greatly enhances
the crimping effect by preventing the compres
Any suitable means may be employed for carry
sive forces to be expended in merely bending the
ing out the method. For example, the staple
?ber bundles may be fed one at a time by means
of an air jet through a radial channel in a rotat_
ing disk operating within a stationary peripheral.
bundle as a unit. The ?anged drum I0 is rotated
at a speed su?icient to provide a fresh space on
the periphery for the next ?ber bundle. The ro
tation of the drum I0 is such as to direct the ?ber
bundle downwards into the duct 15.
sleeve having an aperture adjacent a suitable
stationary ballle so that the bundle is released
If desired, the ?lamentary material may be
with a high longitudinal velocity into contact 40
softened before it enters the cutter in order to
with the ba?le. If desired, a casing may be ar
assist the crimping action effected upon impinge
ranged around, a centrifugal disk of the type
ment against the ?anged drum H). In such event,
shown in the drawings in such a manner that
the ?ber bundle may stick to the periphery of the
the ?ber bundles thrown from the disk impinge,
against one of the corners inside the casing end ‘ 45 drum until it approaches the air jet from the
nozzle l8, which acts as a clearer 0f the periphery
wise against one wall and ?at against the other.
of the drum Hi.
A preferred arrangement for carrying out the
In Figures 3 and 4, a. modi?ed embodiment is
invention is shown in the drawings wherein the
cutting and crimping of the staple ?ber bundle f shown in which the obstruction or ba?le is more
50 closely adjacent the position of cutting of the
follow each other in rapid succession.
In Figures 1 and 2, there is shown a staple ?ber
?ber bundle. In these ?gures, the rotating disk
2 for feeding the ?lamentary material to the
cutter of the centrifugal 'disk‘ type comprising
knife 5 is mounted in a support for rotation by
the disk‘2 having the entrance channel 3 to which
a pulley 9 operated by a belt and motor not
the ?lamentary material is fedconnected with the
radial channel 4 out of which the ?lamentary 55 shown, the knife being mounted upon. a bracket
2,407,108
3
20 extending from the duct 2| of oval shape,
above the opening of which the ?anged drum I0
is mounted upon the cross shaft ll provided with
a pulley I2 to be driven by a belt and motor not
shown so that the periphery and ?ange surface
of the drum are in close proximity to the posi
tion of cutting of the staple ?ber bundle.' In
surface at right angles to the ?rst surface, and
then setting said ?bers.
7. In combination, means for imparting a high
velocity comprising a longitudinal component to
a compact bundle of ?bers and an obstruction
arranged in the path of said bundle presenting
‘a surface substantially at right angles to the
longitudinal direction of movement of said bundle
this embodiment, the staple ?ber bundle comes
into substantially immediate contact with they
so that the bundle collides substantially endwise
?ange surface after cutting, and, should it be in
against the surface of the obstruction.
a softened condition so that it tends‘ to stick to
the periphery of the drum, it is removed at the
bottom thereof by means of the doctor blade 22
' 8. In combination, means for imparting a high
velocity comprising a longitudinal component to
a compact bundle of ?bers and a rotatable ?anged
hearing against the surface of the periphery of
drum arranged in the path of the bundle to pre
the drum.
15 sent its peripheral surface and its adjacent ?ange
The methods and apparatus of the invention
surface to the moving ?ber bundle so that the
are applicable to any type of natural or arti?cial
bundle'collides substantially endwise against the
flange.
?ber, such as regenerated cellulose, cellulose
9; In combination, means for imparting a high
esters and ethers, vinyl resins, etc.
While preferred embodiments of the invention 20 velocity comprising a longitudinal component to
have been disclosed, the description is intended
a compact bundle of ?bers, an obstruction ar
to be illustrative only, and it is to be understood
ranged in the path of said bundle presenting a
that changes and variations may be made with
surface substantially at right angles to the lon
out departing from the spirit or scope of the in
gitudinal direction of movement of said bundle
vention as de?ned by the appended claims.
so that the bundle collides substantially endwise
We claim:
against the surface of the obstruction, and means
1. In a method of crimping textile ?bers of
for clearing said obstruction of any ?bers stick
spinnable length, the steps of imparting a high
ing ‘thereto.
longitudinal velocity to a compact bundle there
10. In combination, ' means for imparting a
high velocity comprising a longitudinal compo
of and causing the moving bundle to collide sub
stantially endwise against an obstruction.
nent to a compact bundle of ?bers, a rotatable
flanged drum arranged to present its peripheral
2. In ‘a method of crimping textile ?bers of
spinnable length, the steps of imparting a com
surface and its adjacent ?ange surface to the
plex high velocity to- a compact bundle thereof
moving ?ber bundle so that the bundle collides
comprising longitudinal and lateral components ' 35 substantially endwise against one of the surfaces
of the ?ange, and means for clearing said ?anged
and causing the moving bundle to collide sub
stantially simultaneously endwise against one
drum.
’
surface and laterally against another surface at
11. In combination, a centrifugal cutting de
vice for simultaneously cutting ?lamentary ma
right angles to the ?rst surface.
3. In a method of treating ?lamentary mate
rial, the steps of feeding said ?lamentary ma
terial longitudinally through a'path having a
portion rotating bodily about one end thereof as
an axis, repeatedly cutting a ?ber bundle from
Iit
the free end of the bodily rotatingportion, and ‘
presenting a fresh surface of an obstruction to
each of said bundles so that the bundles impinge
substantially endwise thereagainst.
'
’
4. In a method of treating ?lamentary mate
rial, the steps of feeding said ?lamentary ma
terial. longitudinally through a path having a
portion rotating bodily about one end thereof as
an axis, repeatedly cutting a ?ber bundle from
the free end of the bodily rotating portion, and
presenting a fresh surface of a re-entrant right
anglcd obstruction to each of said bundles so that
the bundles impinge substantially endwise and
terial and imparting a velocity comprising a lon
gitudinal component to the ?ber bundle cut
therefrom, and an obstruction arranged in the
path of said bundle substantially at right angles
to the longitudinal direction of movement of
said bundle.
12‘. In ‘combination, a centrifugal cutting de
vice for simultaneously cutting ?lamentary ma
terial and
gitudinal
therefrom
to present
imparting a velocity comprising a lon
component to the ?ber bundle cut
and a rotatable ?anged drum arranged
its peripheral surface and its adjacent
?anged surface to the moving ?ber bundle.
'
13. In combination, a centrifugal cutting de
vice for simultaneously cutting ?lamentary ma
» terial and imparting a velocity comprising a lon
gitudinal component to the ?ber cut therefrom, a
rotatable ?anged drum arranged to present its
peripheral surface and'its adjacent ?anged sur
laterally thereagainst.
face to the moving ?ber bundle, and means for
5. In a method of treating ?lamentary mate
rial, the steps of softening said ?lamentary ma 60 clearing said ?anged drum.
14. In a method of crimping textile ?bers of
terial, cutting said ?lamentary material into
spinnable length, the steps of imparting a high
compact bundles of ?bers, imparting a high lon
velocity comprising a longitudinal component to
gitudinal velocity to a bundle thereof and caus
a discontinuous compact bundle thereof and
ing the moving bundle to collide substantially
causing the moving bundle to collide against an
endwise against an obstruction to crimp them
and then setting said ?bers.
6. In a method of treating ?lamentary mate
obstruction at an inclination to a lateral di
rection.
~
15. In a method of treating ?lamentary ma
rial, softening said ?lamentary material, cutting
terial, the steps of feeding said ?lamentary ma
said ?lamentary material into compact bundles
terial longitudinally through va path having a
of ?bers, imparting a complex high velocity to a
portion rotating bodily about one end thereof as
bundle thereof comprising longitudinal and lat
an axis‘, repeatedly cutting a ?ber bundle from
eral components, causing the moving bundle to
the free end of the bodily rotating portion, and
collide substantially simultaneously endwise
presenting a fresh surface of an obstruction to
against one surface and laterally against another 75 each of said bundles so that‘ the bundles impinge
2,407,108
thereagainst at an inclination to a lateral di
rection.
16, In combination, means for imparting a
high velocity comprising a longitudinal compo
nent to a compact bundle of ?bers and an ob
struction arranged in the path of said bundle
presenting a surface inclined to the longitudinal
1'7. In combination, a centrifugal cutting de
vice for simultaneously cutting ?lamentary ma
terial and imparting a velocity comprising a lon
gitudinal component to‘ the ?ber bundles cut
therefrom, and an obstruction arranged in the‘
path of said bundle inclined to the longitudinal
direction of movement of said bundle.
direction of movement of said bundle so that the
bundle collides substantially endwise against the
10
surface of the obstruction.
JOHN E. SPALDING.
DAN B. WICKER.
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