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Патент USA US2408671

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- 1, 1946'
V
H. J. MODERMOTT
SPINNING
BUCKET Assmm;
Filed June '7, 1944
~.72,408,670
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7
Patented Oct. 1, 1946
2,408,670 ‘
; UNITED
STATES » PATENT ‘ OFFICE
r
2,408,670.
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' SPINNING BUCKET ASSEMBLY
‘Henry J. McDermott, Prospect Park, Pa., as'signor
to American Viscose Corporation, Wilmington,i
Del., a corporation of Delaware
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Application June 7, 1944, Serial'No. 539,2].6. m
v _ 16 Claims.
(01. 57-76)
Figure 4 'is a, perspective view of the bucket
I This invention relates to an improved centrifu
gal bucket assembly. such as may be used in the
liner.
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Referring. more particularly to the drawing,
manufacture of arti?cial ?lamentary material
according to the viscose process, for example.
In that process, the freshly formed ?lamentary
material obtained by extruding a suitablespin
there'is shown a spinning bucketZ having a re
movable shell or liner 3' positioned therein‘ and
provided with a plurality of lock-engaging means
which in the embodiment shown take the form
ning solution into a setting medium, is collected
of a plurality of lugs 4 each having a slot 5
in a centrifugal bucket mountedfor rotationion
therein and spaced about the rim of the liner. A
a shaft or spindle. The present day practice
is to guide the thread directly into the bucket 10 cover 6 having a central aperture 1 is shown in
place on the bucket and, in accordance with the
itself, which means that when the cakeis wound
invention is provided with a plurality of spaced
therein and ready for do?ing, the bucket must be
locking means 8 each of which is adapted for alter
removed from the spindle. } Thisnecessityfor
nate locking engagement with either the bucket or
removing the bucket from the spindle each'time
a cake is ready for dof?ng therefrom has become 15 the shell, as desired. As shown, the locking means
constitutes essentially a bell crank arrangement
increasingly burdensome and objectionable with
having a lever arm 9 vnormallyextending ‘along
the inside of theouter periphery of the cover in
the marked tendencyv in the industry to use
larger-sized buckets, since the moisture-laden
one direction, a lever arm. Ill provided with an
?lamentary material greatly increases the weight
of the bucket and renders it di?ic-ult for the oper 20 earlike projection II and normally extending
along the inside of the outer periphery of the
ators to handle without dropping which, of course,
cover in a direction opposite to arm 9, and an in
must be avoided especially when, as is usual nowa
wardly extending lever arm l2, the locking means
days,v the bucket is constructed of a frangible
being supported on the cover and adapted for
material such as Bakelite, or the like. Also,‘ in
do?ing, the rim of'the bucket is‘ often chipped or 25 swinging motion in one direction about their
respective pivots l3, to throw the lever arm 9,
nicked which makes it liable to cracking while in
hereby designated as the bucket‘ engaging mem
use and renders it less resistant to the excessive
ber, outwardly into locking engagement with .a
centrifugal forces to which it is subjected when
.groove [4 in the inner periphery of the upper rim
of bucket 2, and swingable in a reverse direction
the bucket is rotated at high speeds.
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It is an object of this invention to provide a
to disengage the bucket and bucket engaging
‘light-weight shell or liner‘ for the bucket, which
member and to simultaneously throw the lever
conforms to the shape thereof, and into which
arm [0 which is hereby designatedias the shell
‘the?lamentary material may be guided and col
engaging member outwardly so that ‘ear H ex
lected in package form, and which may be read
ily removed from the bucket, upon cessation of ro 35 tends into slot 5 in lug 4, in locking engagement
with the liner ‘3. Means are provided for im
tation thereof and after a cake of thread has been
partingpivotal motion to the locking means and
collected. It is also an object of the invention‘ to
for limiting the extent of such pivotal motion.
‘facilitate the do?ing of a thread cake collected in
In the embodiment shown, the cover is provided
, a centrifugal spinning bucket. A further object is
to provide a cover‘for the bucket having a special 40 with. a plurality of recesses I5 into which the
inwardly projecting arm l2 of the locking means
locking means adapted for alternate, engagement
extends, and with a groove I6 which extends
‘with the bucket and shell, and cooperable with
vannularly
in the cover, and in which the bucket
the shell to facilitate removal'thereof from‘ the
engaging member 9 and the shell engagingmem
In the drawing illustrative‘ ofv a preferred ‘em 45 her H) are normally retained. A sleeve I1 is posi
tioned in central aperture 1 in cover 6, for rotary
bodiment of the invention,
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.movement therein, and so that it partially pro
Figure -1 is a plan view‘ of a spinningv bucket
bucket.
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trudes above the cover to ‘provide a grasping
means I8 (Figure 3), the inner end thereof be
assembly according to the invention‘showing ‘the
cover locking means in engagement with the
bucket;
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50 ing. provided with a plurality of spaced notches
19 which cooperate with recesses Hi ‘to receive
plan view, partly section of a
spinning bucket assembly“ 'showing‘ the cover,
Figure 2 is a
arms l2 of the locking ‘means. Sleeve l‘! is pref
erably split radially at [la and is of such size
thatit tends to spring outwardly to grip the inner
locking means in engagement with the’ shell; ,
Figure 3 is a cross-sectional elevation of the
bucket assembly, and
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periphery‘of the cover 6 with just suiiicient force
42,408,670
to prevent the sleeve from sliding within the cover
because of vibration when the bucket is coming to
a stop. The locking means, by virtue of the en
gagement of inwardly extending arms 12 with the
4
tend annularly about the rim.
However, the
groove may be of shorter length, if desired, in
which case, however, in order to facilitate accu
rate register of the shell lugs therewith, and of
notches E9 in sleeve I1 swing about their respec
the locking means with both the grooves and
tive pivots I3 in response to rotary movement of
sleeve II. In the embodiments speci?cally illus
trated, when sleeve I1 is turned in a counter
shell lugs, suitable indicia may be placed about
the outside of the bucket rim, and on the cover,
to guide the operator in assembling the device
clockwise direction (Figure I) each locking means
in operating condition.
8 is swung about its pivot 13 so that the bucket 10
While preferred embodiments of the invention
engaging member is thrown outwardly into lock
have been disclosed, the description is intended to
be illustrative only, and it is to be understood that
changes and variations may be made therein
without departing from the spirit or scope of the
invention as de?ned by the appended claims.
I claim:
1. In combination, a removable shell adapted to
be positioned in a spinning bucket and conform
ing to the shape thereof, a cover for the bucket,
means for interlocking the cover and the bucket,
and means for interlocking the cover and the
ing engagement with groove [4 in the rim of
bucket 2, and maintained in that position under
the in?uence of centrifugal force during collec
tion of the ?lamentary material which is guided
into shell 3 by the customary reciprocating fun- »
nel, and wound therein due to the rotation of
the bucket on its spindle. When the sleeve [1 is
turned in a clockwise direction (Figure 2), the
locking means swings about their respective piv
ots 13 in the same direction, and bucket engage
ing member‘ 9 is disengaged from the bucket and
each shell engaging ‘member [0 is simultaneously
thrown outwardly into locking engagement with
the slot 5 of the lug 4 on shell 3.
shell.
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2. In combination, a removable shell adapted to
be positioned in a spinning bucket and conform
ing to the shape thereof, a cover for the bucket,
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As shown in Figures 1 and 2, the locking means
is so constructed that the bucket-engaging mem
and locking means on the cover adapted for selec
tive interlocking engagement with the bucket and
ber 9 which lies on one side of piv'o-t I3 is heavier
shell.
3. In combination, a spinning bucket adapted
to receive a cover, a removable shell in the bucket
than the shell engaging member H], as a result
of which the bucket engaging member may be en
gaged with the groove it in ‘bucket 2 without
provided with a plurality of spaced lock-engaging
manual manipulation of sleeve ll, being thrown
means, and a cover for the bucket having sup
outwardly into engagement with the groove as
the result of centrifugal force created by rotation
ported thereon a plurality of spaced locking
means each comprising a bucket engaging mem
of the bucket and shell von the spindle. When
the ‘bucket engaging member is thus thrown out
wardly into locking engagement with groove [4,
ber and a shell engaging member and adapted
to be moved into selective locking engagement
arm l2, positioned in notch l9‘of sleeve 1'! pivots
therein and drags sleeve ll into bucket-locking
means on the shell.
position automatically.
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with the bucket and one of the lock-engaging
4. In combination, a spinning bucket adapted
40 to receive a cover, a removable shell in the bucket
As shown more clearly in“ Figure 8, the sleeve
l1 positioned in the aperture in cover 6 protrudes
provided with a plurality of spaced lock-engaging
means, and a cover for the bucket having pivoted
thereon a plurality of spaced locking means each
comprising a bucket engaging member and a shell
above the cover and constitutes a grasping means
[8 for manual manipulation of the locking means.
Shell 3 in which a cake of rayon 2| is collected -
may be provided with a ‘central aperture 20 in
its bottom wall so that there is less tendency for
the lever to adhere to the bucket wall by a suction
effect, thus facilitating removal of the shell.‘ The
‘engaging member, and adapted to be swung into
selective locking engagement with the bucket and
one of the lock-engaging means on the shell.
5. In combination, a spinning bucket adapted
shell is preferably constructed of a tough light .'
weight‘ acid-resistant plastic ‘material such as
polyvinyl chloride, polyvinylidene chloride or the
to receive a cover and having a groove in the
inner periphery of the upper rim thereof, a re
movable shell positioned in the bucket provided
with a_ plurality of spaced lock-engaging means,
like, and is su?iciently rigid to support a thread
cake while being at the same time sufficiently
and a cover for the bucket, having a plurality of
?exible to be thrown againstthe inner bucket ,
wall and gripped thereby as the result of cen
trifugal force, during rotation of the bucket, and
thus is prevented from wobbling or vibrating
while the bucket assembly is in use. If desired,
holes may be provided in the wall of the shell for
permitting the escape o-f'liquid. Such holes may
be in approximate registry with those in the
bucket, suitable indicia being provided, in such
spaced locking means pivoted thereon, each com
prising a bucket engaging member and a lock
engaging member and adapted to be swung into
selective locking engagement with the groove in
the bucket rimand with one of‘ the lock-engaging
means on the shell.
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6. In combination, a spinning bucket adapted
to receive a cover and having a groove in the
inner periphery of the upper rim thereof, a re
movable shell in the bucket provided with a plu
rality of spaced lock-engaging means, and a cover
for the bucket having a plurality of spaced lock
event, on the bucket and/or cover to guide the
operator in placing the shell into the bucket.
Any number of cover-lockingmeans and ele
ments cooperating therewith may be provided
When the locking mean-5 is constructed as speci?
cally illustrated herein, it is necessary to position
the shell in the bucket with its lugs adjacent the
groove in the inner periphery of the. upper‘rim
ing means pivoted thereon, each lockingmeans
comprising a bucket engaging member and a shell
engaging member and adapted to be swung in
one direction to move the bucket engaging mem
ber into locking engagement with the ‘bucket and
to be swung in [a reverse direction to disengage
of the bucket, so that the locking means may 'be
the bucket engaging‘ member and to move the
shell'eng‘agi'ng ‘member into locking engagement
alternately thrown into locking engagement with
either the bucket rim or the shell lugs, and it is "
preferred for that reason that the groove I4 ex
75
with one of the lock-engaging means on the shell.
7. In combination, a spinning bucket adapted
2,408,670
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to receive‘ a cover and having a groove inthe
'member into locking engagement withv one of the
inn'er periphery of ‘the upper rim thereof, a re
lock-engaging members on the shell.
‘ -11‘. In combinationra spinning bucket adapted
movable shell positioned inv the bucket provided
with'a plurality of spaced lock-engaging mem-_
bers, and a cover for the bucket carrying a plu
rality of spaced locking means each comprising
to receive a cover' and-having a groove on the
inner periphery of ‘the upper rim thereof, a re
movableshell =inithe bucket and conforming to
a bucket engaging member and a shell engaging
theishape thereof,a' plurality of spaced lock-en
member, said locking means being pivotedv on
gaging means on the shell, a‘ cover for the bucket,
the cover" and adapted to be swung in one di
rection to-move‘ the bucket engaging member
intollocking engagement-with thegroove in' the
bucket ‘rim, and: adapted to be swung in a re
verse direction to disengage the bucket and bucket
engaging member and'simultaneously move the
avplurality of spacedslocking means pivoted on
10 the-cover each comprising a bucket engaging
member normallyextending ‘:along the inside of
thefouteri periphery of‘th'e cover, a shell engaging
member normally extending along the inside of
the outer periphery of the: cover in a direction
shell engaging member into locking engagement 15 opposite to the‘bucket engaging member, and a
'with-‘o'ne-of the lock-engaging members on the
member extending inwardly from the bucket and
shelleng'aging: members, and means for pivoting
shell.
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_ 8.‘ In combination, a spinning bucket adapted
the locking means in one direction to throw the
to‘ receive a cover and having a groove 'on the
inner periphery of the upper rim thereof, a re
bucketengaging member outwardly into locking
engagement with the bucket and for pivoting the
movable shell positioned in the bucket and con
locking means in a reverse direction to disengage
forming to the shape thereof, a plurality of spaced
the bucket and bucket engaging, member and si
multaneously throw the shell engaging member
into locking engagement with one of the lock
cover for the bucket, aplurality of spaced look
ing ‘means pivoted on‘ the cover, each locking 25 engaging members on the shell.
12. In combination, a spinning bucket adapted
means comprising a _bucket engaging member,
to receive a cover and having a groove on the
a shell-engaging member, and a member extend
ing inwardly, therefrom, ‘and being adapted to
inner periphery of the upper rim thereof, a re_
be swung on its pivot in one direction to throw
movable shell in‘the bucket and conforming to
the bucket engaging member outwardly into en 30 thes'shape thereof, a- plurality of spaced lock
gagement with the bucket, and adapted to be
Tengaging means on the shell, acover for the buck
swung in an opposite direction to disengage the
et, a plurality of spaced locking means pivoted
on the cover each comprising a bucket engaging
bucket and bucket engaging member and throw
the shell engaging member into the slot in one
member normally extending along the inside of
of the lugs on the shell, and means for limiting 35 the outer periphery of the cover, a shell engag-A
the pivotal motion of the locking means.
ing member normally extending along the inside
of the outer periphery of the cover in a direction
9. In combination, a spinning bucket adapted
opposite to the bucket engaging member, and a
to receive a cover and having a groove in the
member extending inwardly from the bucket and
inner periphery of the upper rim thereof, a re
movable shell positioned in the bucket and pro 40 shell engaging member, and means for pivoting
vided with a plurality of spaced lock-engaging
the locking means in one direction to throw the
lugs on the‘shell each having a slot therein, a
members, and a cover for the bucket carrying
a plurality of spaced locking means each com
prising a bucket engaging member formed in
tegrally with a shell engaging member, said look
ing means being pivoted on the cover and adapt
ed to be swung in one direction to throw the
bucket engaging member outwardly into locking
engagement with the bucket and for pivoting the
locking means in a reverse direction to disengage
the bucket and. bucket engaging member and
throw the shell engaging member into locking
engagement with one of the lock-engaging mem
here on the shell, and means for limiting the ex-\
tent of pivotal motion of the locking means.
in a reverse direction to disengage the bucket 50
13. In combination, a spinning bucket adapted
and bucket engaging member and throw the shell
to receive a cover and having a groove on the
engaging member into locking engagement with
inner periphery of the upper rim thereof, a re
one of the lock-engaging members on the shell.
movable shell in the bucket and conforming to
the shape thereof, a plurality of spaced lock-en
10. In combination, a spinning bucket adapted
gaging members on the shell, a cover for the
to receive a cover and having a groove on the
bucket, a plurality of spaced locking means piv
inner periphery of the upper rim thereof, a re
oted on the cover each constituting substantially
movable shell in the bucket and conforming to
a bell crank arrangement having a lever arm
the shape thereof, a plurality of spaced lock
bucket engaging member into locking engage
ment with the bucket, and adapted to be swung
comprising a bucket engaging member normal
engaging means on the shell, a cover for the
bucket, a plurality of spaced locking means piv 60 ly extending along the outer periphery of the
oted on the cover each comprising a bucket en
gaging member normally extending along the
inside of the outer periphery of the cover, a shell
cover and within the limits de?ned thereby, a
lever arm comprising a shell engaging member
normally extending along the outer periphery
of the cover and within the limits de?ned there
engaging member normally extending along the 65 by and in a direction opposite to the bucket en
inside of the outer periphery of the cover in a
gaging member, and a lever arm extending in
direction opposite to the bucket engaging mem
wardly, means for pivoting the locking means in
ber, and a member extending inwardly from the
one direction to throw the bucket engaging mem
bucket and shell engaging members, and means
ber outwardly into locking engagement with the
for pivoting the locking means in one direction 70 bucket and for pivoting the locking means in a
to throw the bucket engaging member outwardly
reverse direction to disengage the bucket and
into locking engagement with the bucket and
bucket engaging member and throw the shell en
for pivoting the locking means in a reverse di
gaging member outwardly into locking engage
rection to disengage the bucket and bucket en
ment with one of the lock-engaging members on
gaging member and throw the shell engaging 75 the shell.
2,408,670
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14. -In combination, a spinning bucket adapted
locking means pivoted on the cover each consti
to receive a cover and having a groove on the
inner periphery of the upper rim thereof, a re
movable shell in the bucket and conforming to
having a lever arm comprising a bucket engag
the shape thereof, a plurality of spaced lock
engaging members on the shell, a cover for the
bucket, a plurality of spaced locking means piv
oted on the cover each constituting‘substantially
a bell crank arrangement having a. lever arm
comprising a bucket engaging member normally
extending along the outer periphery of the cover
and within the limits de?ned thereby, a lever arm
comprising a shell engaging member normally
extending along the outer periphery of the cover
and within the limits de?ned thereby and in a
direction opposite to the bucket engaging mem
ber, and a lever arm extending inwardly, means
for pivoting the locking means in one direction
to throw the bucket engaging member outwardly
into locking engagement with the bucket and for
pivoting the locking means in a reverse direction
to disengage the bucket and bucket engaging
member and simultaneously throw the shell en
gaging member outwardly into locking engage
ment with one of the lock-engaging members on
the shell.
15. In combination, a spinning bucket adapted
to receive a cover and having a groove on the
inner periphery of the upper rim thereof, a plu
rality of spaced lock-engaging members on the 30
shell, a cover for the bucket, a plurality of spaced
tuting substantially a bell crank arrangement
ing member normally extending along the outer
periphery of the cover and within the limits de
?ned thereby, a lever arm comprising a shell en
gaging member normally extending along the
outer periphery of the cover and within the lim
its de?ned thereby and in a direction opposite
to the bucket engaging member, and a lever arm
extending inwardly, means for pivoting the look
ing means in one direction to throw the bucket
engaging member outwardly into locking engage
ment with the bucket and for pivoting the look
ing means in a reverse direction to disengage the
bucket and bucket engaging member and throw
the shell engaging member outwardly into look
ing engagement with one of the lock-engaging
members on the shell and means for limiting the
extent or pivotal motion of the locking means.
16. In combination, a shell adapted to be po
sitioned in a spinning bucket andreadily removed
from the bucket, said shell conforming to the
shape of the inner wall of the bucket and having
a cylindrical peripheral wall and an annular bot
tom wall for supporting a rayon cake, a cover,
and means for interlocking the coverand the
shell to permit withdrawal of the shell in associ
ation with the cover.
.
HENRY J. MCDERMOTT.
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