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Патент USA US2112939

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April 5, 1938.
2,112,939
w. z. TAYLOR
CONVERSION OF CONTINUOUS FILAMENTS INTO YARN CONTAINING STAPLE FIBER
Filed March 3, 1936
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9 Main’, My
ATTORNEYS
Patented Apr. 5, 1938
_ 2,112,939
UNITED --sTA_-'rss~ PATENT OFFICE
_, 2.11am
CONVERSION OF CONTINUOUS FILAMENTS‘ ‘I ,
INTO
CONTAINING STAPLE FIBER
‘ ‘
William Ivan Taylor, Spondon, near Derby, Eng-'
land, assignor to Oelanese Corporation of
America, a corporation of Delaware
.
Application March 3, 1936, Serial No. 68,868
_In GreatBritain March 6, 1935
1
(c1. 19-11
This invention- relates/to a method and appa
"
I
.
faces to be maintained, and so readily permits the
ratusfor the conversion of continuous ?laments ' use of greater or lesspressure' where ‘necessary,
‘ directly into yarn containing staple ?ber.
vas with the treatment of bundles of greater or‘
According to the invention, a bundle of ?la-'
less denier.
>
7
5 ments is caused to pass between two positively
Other factors governing the nature of the ?nal
driven surfaces .moving in the same general di-' - product, which‘ factors may be varied as required,
rection as the ?laments, at least one of them, are the nature of the cutting surface. the speed
however, having a peripheral speed different from ' of progression of the ?lament bundle through the
the speed of the ?laments, and ‘preferably also apparatus, the, difference between the speed of
10 from. the other, at least one of the surfaces being the surface or surfaces: and the ?laments, the 10
driven through ?exible means permitting the ‘two ?neness of the individual ?laments in the bun
'surfaces to be pressed against each other with but die, and the amount “of twist in the bundle.
light pressure, and yet at the. same time allowing ~. The cutting surface may be of an abrasive na
the surfaces to move at predetermined speeds. ‘At ture, e. g. a roller surfaced with or made of abra-' . ‘
15 least one of the surfaces has a cutting action, so. ‘sive material. It is, however, advantageous to 18
that by reason of the passage of the ?laments bei ' employ a cutting roller provided with ?ne sharp
tween the surfaces and the light pressure exerted edgedv ?utes running'either helically or substan-Q
between the surfaces, the ?laments in the bundle; - tially parallel to the axis of the roller, a roller '
-
are transformed-into staple ?bers,'and the ~?la
20; ments leave the surfaces ‘as yarn containing 'sta-i
‘of this type providing for greater control over
pla ?ber.
The operation of converting- continuous ?la- 4
ments in the bundle into staple ?bers‘as described
.above does not substantially a?ect the’ degree'oi.
25 twist which the bundle ‘may possess. However,
pair of ?uted cutting rollers may beused, the
?utes of the two rollers runningin such directions
when the bundle has little or no-twist, the prod?
- not should be collected; after the conversion oi',_
the ?laments into staple ?bers, bya twisting and
the properties of ‘the ?nal product. Both sur- '”
faces may have a cutting‘ action, for example a
as to cross each other at the point of contact be.- .
tween the rollers._ One roller. however, may have 2‘
vaplain
surface.’
"
v
_
_
_
v
_
.It is advantageous to allowvthe weight of one‘ ,
of the rollers to provide the necessary light pres- , .
winding operation to' impart to it a twist which ' sure between the surfaces',-whether such pressing
, so may be the amount of twist
in the ?nal‘ roller has or has not is cutting action.
, ‘
30
product, or may need to be'augmented by ‘fur-, . The 'inventionis applicable to the treatment of
ther twisting.‘ In either case, the twist so im
diiferent kinds of’continuous ?laments, e. g. eel;
. ’ parted during winding maintainsthe coherence -» lulose derivative ?laments such as cellulose aceé
of the product. Alternatively, the coherence may
35 be maintained by reason of a substantial initial
'
degree of twist in the continuous ?lament bun
dle', which twist, as previously stated, is practi
cally una?'ected by the conversion.
.
,
tate‘r?laments, cellulosic ?laments such as vis
cose ?laments, and natural ‘silk ?laments.-v -'
_, 35
By way of example,.a1 form of apparatus pro,- '
vided withdriving means according to the'inven‘ ‘
. tion will now be'describ'ed in greater detail with
The surfaces should together make pressure referenceto the accompanying drawing in'whlch
' 40 contact preferably substantially at a point in-the , 1. Fig. 1 is a side elevation of an apparatus driven 40
, length of the bundle, but while a pair of'rollers .
by means according to? the present invention‘ for
may most conveniently be employed for this pur
converting a‘ bundle ofécontinuous ?laments into
pose other arrangements may hey-adopted, e. g. a
astaple?ber yarn, and
' roller operating against a band. > lI‘he following
45 description will for simplicitybe directed solely
to arrangementsoi apparatus using‘ rollers to
provideboth surfaces.
‘5 In all cases
'
‘
'
'
the diiference of speed between the
.}
_
->-
-
'
~
. 2-5 give alternative forms of the driving
mechanism according to'the ‘present invention.‘
'InFig. ltheapparatusisshownas comprising
‘generally twopair'sofsrollers i,-I, 3,4,therollers. \
l‘andtbeingmountedonpositivelydrivenshaits
_
two surfaces which‘are pressed‘ together should .landlwhiletherollersi'andlarecsrrledona
* 50 be adjusted in accordance with the nature ‘of the, bracket ‘I suspended froma stationary shaft I so
material under treatment and .the
abovethe rollers. The roller 1 iscarried inslotted
desired in the ?nal product. {The invention per-,- -' . bearings‘! in'a'member iI secured to the bracket
mits-the‘ necessary adiustmentoi speed to be e'fi ‘I by means of shut and bolt ll passing through
iected while" allowing substantially .independent ‘a slot
in the bracket! so that the positio
controh-pf the pressure exerted between them:
oithe.
ll may be musty/Vania?
.
2
2,112,939
The roller 5 is mounted in bearings carried in a
slot I3 in the lower end of the bracket ‘I.
Yarn I4 consisting of continuous ?laments is
supplied horizontally to the upper pair of roll
ers I, 2 and passing over the roller I'proceeds
downwards to the rollers 31, 4. The roller 3 is
grooved so that it grips the ?laments with the aid
of the roller 4 and is driven at a higher speed
than the roller I. In consequence the bundle of
10 continuous ?laments I4 is caused to slip over
the surface of the roller I. The roller I is pro
vided with ?utes making sharp edges with the
surface of the roller so that the roller‘l exerts
a cutting action on the ?laments and converts
15 the bundle of continuous ?laments I4 into a
continuous bundle of staple ?bers I5. This
bundle proceeds downwards to the guide I6 of a
cap-spinning device IT by means of which it is
twisted and spun into a staple ?ber yarn and
20 wound on the package I8 which is driven by
means of the band I9.
.
In order to bring about the cutting of the con
tin ous ?laments in the bundle I4 between the
rollers I and 2 the roller 2 is allowed to press
‘downwards on the roller I with its own weight,
a clearance 20 being allowed at the bottom of the
slotted bearing 3 to permit the weight of the roll
er 2 to be effective. The roller 2 is positively
driven at a speed which may be the same as, or
30 different from, that of the roller I by means of a
flexible driving shaft 2| attached at one end to
the roller 2 and having at the other end 'a bevel
gear 23 engaging with a bevel gear 24 on a driv
ing shaft 25. The shaft 25 is driven in any de
35 sired speed relationship with the shafts 5, 6 so
that the speed of the roller 2, like those of the
rollers. I and 3, is positively controlled. The ?utes
inv the surface of the roller I by means of which
the ?laments, pressed into sliding contact with
the roller I, are periodically severed to form
staple ?bers, are shown more clearly at 28 in
Figs. 2-5.
a.
In Figs. 2 and 3 means are shown for driving
the roller 2 from the roller I; In Fig. 2 gear
wheels 21, 28 are secured to the rollers I and 2
respectively. The teeth of the gear wheels 21
and 28 are longer than is usual so that any verti
cal movement of the roller 2, which is freely al
lowed by the slotted bearings 9, does not inter
fere with thedriving of the roller 2. The gears
21 and 28 are equal in size so that the rollers I
and 2 are driven at equalspeeds. In Fig. 3 gear
wheels 29 and 30 vare shown which are different
in size, the gear wheel 29 being smaller than the
gear wheel 30 so that the roller 2 is driven more
slowly than the roller I.
In Fig. 4 a further method of driving the roller
2 from the shaft 5 of the roller I is shown, in
which the shaft 5 is provided with a bevel gear
3i engaging with a bevel gear 32 carried on 9.
countershaft 33 mounted in bearings 34, 35.
Splined to the countershaft 33 is a friction wheel
36 which is held downwards against a spring 31
on the shaft 33 by means of a lock nut 38 en
gaging on a screwed portion 39 of the‘ shaft 33. ,
The friction wheel 36 engages with a friction
disc 40 secured, to the shaft H of the roller 2.
By these means the roller 2 is driven from the
shaft 5 of the roller I and the speed ratio between
the roller 2 and the roller I may'be adjusted by 10
means of the locking means 38 with the aid of
which the friction wheel 36 may be caused to
engage with any desired radius of the friction
disc 40.
°
In Fig. 5 another form of apparatus is shown
in which the roller 2 is driven independently of
the roller I from a shaft 42. Between the posi
tively driven shaft 42 and the shaft H of the
roller 2 are interposed coupling means com
prising two discs 43, 44 secured to the ends of the
shafts 4I and 42 respectively, the discs being pro
vided with feathers 45, 45 respectively proceed
ing diametrically across their faces.
The two'
feathers 45, 46 engage in diametral grooves in -
an intermediate disc 41 by means of which the
two discs are coupled together. The two grooves
which are disposed on opposite faces of the disc
41 are at right angles to one another. By means
25
_
of this coupling, while the roller 2 is positively
driven at the same speed as the shaft 42 it is free
to rise and fall in the slotted bearings 9 if caused
to do so by the filaments I4 passing between the
30
rollers I and 2. ,i
_ Having described my invention, what I desire
‘to secure by Letters Patent is:
> Apparatus for the production from a bundle
of continuous filaments of a continuous product
containing staple ?bers, said apparatus compris
ing a pair of rollers,’ one at least of said rollers
having a cutting surface, means for drawing a
bundle of continuous ?laments through said pair
of rollers at a speed different from the peripheral
speed of at least one of said rollers, means for
pressing said rollers together was to exert a
light pressure upon the bundle of ?laments pass 45~
ing between them, a driving shaft positively con
nected to one of said rollers, a further driving
a
shaft and a coupling including discs secured to
said further shaft and said other roller, diam- ' '
etrally disposed feathers on the faces of said
so
discs, and an intermediate disc between said I
discs, said intermediate disc being diametrally
slotted to receive said feathers, the slots being at
right angles to one another and on opposite faces
of said intermediate disc, said coupling being
adapted to allow variation in the distance apart
of the axes of rotation of the two rollers without
interruption of the drive.
WILLIAM IVAN Tampa.
1
60
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