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Патент USA US2412357

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Dec. 10, 1946.
Filed Dec. 17, 1943.
4 Sheets-Sheet 1
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Dec. 10,1946.
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4 Sheets-Sheet 2
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Dec._ 10, 1946.
Filed Dec. 17, ‘1943'
4 Sheets-Sheet 5
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Filed Dec. 17, 1943
4 Sheets-Sheet 4
62 WM 5. Ros/mom
Patented Dec. 10, 1946
Elvin B. Robinson, Gastonia, N. C., assignor of
one-third to Clarence J. Costner and onesthird
to Arnold W. Kincaid, both 01’ Bessemer City,
N. C.
Application December 17, ‘1943, Serial No‘. 5143605
4 Claims.
This invention relates to an improved type of
drawing frame and more especially to an im
proved method for mounting the ends of the top
rolls and for mounting the roller necks joining
(01. 19-130)
a single section of a second
awing frame. The
?rst drawing frame is called t e breaker drawing,
and the second step is the\?nished drawing.
From the ?nished drawing frame the slivers are
passed through slubbers. In ?ne work, after
the sections of the bottom rolls together, so as
to prevent undue wear of the bearings supporting
passing through the ?nished drawing frame, the
the ?uted rolls of the drawing frame, and thus
slivers are passed through the slubbers, and de
providing a drawing frame which will turn out
posited on bobbins, which slubbers can also be
very much better work than a drawing frame
called a rovingr frame. These slivers are usually
equipped with the vconventional type of bear 10 passed single through the slubber or roving frame.
ings which wear out rather rapidly, and when
Then, if desired. they may be again passed
so worn, results in imperfect work.
through a second slubber or intermediate which
It is an object of this invention to provide an
is another drawing frame where they are de
improved drawing frame having an improved
posited on bobbins again. In both of these last
type of ‘bearing for the ends of the top rolls and 15 named steps, there is some twisting imparted to
an improved bearing for the roller necks joining
the slivers as both of them employ a ?yer. After
the sections of the bottom rolls together, so as
these four steps, the’ product is passed over the
to provide bearings between the bottom and top
spinning frame where it is twisted into a thread,
rolls which are not subject to rapid wear such as
and then it is usually passed through twisters for
the conventional type of rolls in drawing frames 20 twisting a number of the threads together to
heretofore used.
make the ?nished yarn.
It is another object of this invention to pro
One important advantage of a needle or roller
vide an improved type of drawing frame, where
bearing is that the outer shell turns very little,
in needle bearings are provided for the bearing
if at all, and this prevents wear' between the
portions of the ?uted rolls, and also means are 25 contacting surfaces of the outer shells, thus spac
provided which are quickly detachable from the
ing the top and bottom rolls at a de?nite distance
bearings of the top rolls to allow quick dismantling
all the time; whereas, in the old type of draw
of the top rolls from their operating position
ing frames, there were bosses on both the top and
when it is desired to do so.
bottom rolls contacting each other, and due to
It is another object of this invention to provide 30 the fact that there is a lot of grit and other
an improved type of drawing frame wherein a plu
abrasive substances in cotton, this is deposited on
rality of slivers are passed through a plurality of
these bosses, resulting in rapid wear, and also
sections of a drawing frame simultaneously, and
creating a considerable amount of friction.
instead of being coiled into a can to be later fed
When these‘ bosses become worn, it results in im
through another drawing frame having ?uted 35 perfect products by allowing the ?utes of the two
rollers thereon, the slivers after passing through
rolls to be too close together, and thus become
the sections of the ?rst drawing frame are led
too deeply enmeshed with each other, resulting
directly into a second drawing frame where a
in damage and often breaking of the ?bers, and
plurality of slivers emanating from the sections
disrupting the whole purpose'of awing, which
of the ?rst drawing frame are passed through a 40 is the parallelization and atteir tion ‘of the
section of another drawing frame, and joined into
one sliver or roving, thus dispensing with the
Due to the fact that in the old style drawing
many operations heretofore required in trans
frames, there is considerable friction and drag,
ferring cans of slivers from one drawing frame
these drawing frames could not be speeded up in
to the intake end of another drawing frame.
the same manner that a drawing frame with
A drawing frame is usually composed of four
ball ‘bearings, because in the old1 style frames,
to six sections of top and bottom rolls, and they
when they were attempted to be speeded up, .a
take the slivers from cans which have received
great amount of vibration occurs, due to friction
the slivers from the card. Usually from four to
and drag on the moving parts. »
six slivers are run through each of the four to 50
As above-stated, the bosses or collars on the
six sections of the ?rst drawing frame, and these
bottom and top rolls which hold5 these rolls
are combined, and passed through a trumpet or
a de?nite distance apart, some‘ become worn
coiling mechanism, and are deposited as a single
which requires that these bosses begrou? 2d away;
sliver into cans. In the second operation, the
and suitable collars of proper diameter l e swaged
slivers from four ‘to six cans are passed through 55 thereon, so as to hold the topiand bo tom rolls
drawing frame constructed in accordance with
a proper distance apart, but, of course, these col
lars soon become worn, and due to the fact
my invention;
Figure 2 is an elevation of the right-hand end
that for each set of bottom and top rolls, there
" of the lower portion'of Figure 1, and being shown
are four collars, and since'it'" is impossible to
partly in section, and being along the line 2-2
provide four collars which will present the same
in Figure 1;
wearing qualities, these collars wear to different
Figure 3 is a view partly in elevation and partly
diameters, and thus result in improper driving of
in vertical section and taken along the line 3--3
the top roll. In drawing frames, the top roll‘is
in Figure 2;
driven by the bottom roll since the ?bers passing
Figure 4 is a vertical sectional view through
between the top and bottom rolls presents the 10
one of the needle bearings, and being taken sub
proper amount of friction, and this drives the top
stantially along the line 4--4 in Figure 3;
roll in timed relation to the bottom roll. In the
Figure 5 is a top plan view, partly schematic,
old style drawing frame, due to the great amount
of an improved system of handling slivers by pass
of friction between the collars on the rolls, since
ing them from one frame to another frame with
the top rolls are under tremendous pressure by
out the intermediate step of coiling into a can;
suitable weights or spring means, there results
Figure 6 is a view similar to Figure 3 showing
three driving points for each of the top rolls,
another embodiment of the invention;
namely, the driving by the ?utes of the bottom
Figure '7 is a View similar to Figure 6 showing
roll engaging the slivers, and moving the slivers
and top rolls along at the same speed as the bot 20 the bottom bearing as two separate bearings;
Figure 8 is a vertical sectional view through the
tom roll, and also each of the collars on the lower
lower bearings in Figures 6 and 7.
roll exert a driving effect on the collars on the
Referring more speci?cally to the drawings, the
top rolls, and it is evident that when these bosses
l0 indicates a drawing frame roll stand
or collars wear tov different diameters, that prob
ably one end 1 of one of the top rolls will be 25 having a plurality of bearings ll, l2, l3, and I4,
which bearings are held in place and in adjusted
driven at a greater rate than the other, or at
relation along slots l?b extending from near one
a lesser rate that the other, depending upon
end to the other of the upper portion Illa of the
the wear between the collars at the end of the
roll stand Ill by means of bolts l5, l6, l1, and H3.
rolls. This results in biting and cutting of the
lower rolls 20 of the drawing frame are
?bers, and affecting the staple length of the ?bers 30 The
together by a suitable roller neck ‘M which
by shortening the staples. It is evident that in a
usually has tapered ends 22 ?tting into tapered
drawing frame equipped with anti-friction bear
, cavities 23 and locked in position by any suitable
ings, such as roller bearings or ball bearings, as
means. Surrounding the roller neck 2| is‘a nee
shown in the drawings, the sole driving means
dle bearing comprising a shell 25 having down
for the top rolls is through the medium of the
turned ends 26 which loosely con?ne a plurality
?bers passing between the top and bottom rolls.
of pins or rollers 21, and an oil hole 28 is pro- ,
Since the ends of the rolls do not contact each
vided, by means of which lubricant can be intro
other at all, but run free in their anti-friction
duced into the interior of the bearing shell 25.
bearings, because it is evident that a tremendous
The top ?uted rolls 30 have a bearing portion
pressure which was formerly exerted on the 40 3| which is usually integral with the rolls 30, and
collar is now exerted on the shells 32 and 25, thus
a needle bearing shell 32 surrounds this bearing '
making it impossible for any driving action to be
portion 3! in spaced relation thereto, and has
imparted to the ends of the top rolls.
downturned ends 33 which loosely con?ne a‘ plu
Another important advantage of the structure
rality of rollers 3G to provide a needle bearing
shown in the drawings is that in the old type ‘
around the bearing portion 3|. A suitable lubri
cating hole 36 is provided in one of the down
on the ends of'the top rolls was transmitted
turned ?anged portions 33 for the introduction
through the collars directly to the roller necks of
of lubricant to the interior of the needle bearing
the bottom rolls, and the bearings in the roll 50 shell 32. A large headed screw 31 is threadably
stands supporting the roller necks. This meant
embedded in the outer end of the bearing por
drawing frame, the tremendous pressure exerted
that the bottom rolls had tremendous pressure
exerted on their hearing points, namely the
roller necks where the roller necks contacted the
tion 3| for. loosely con?ning the shell 32 on the
end of the roller bearing portion 3| of top roll
30. The‘ needle bearing shells 32 and 25 provide
bearings, this resulting in rapid wear of the bear
bearing surfaces of predetermined diameter to
ings for the roller necks, and also requiring a
hold the rolls 20 and 30 in proper spaced rela
greatly increased amount of power to drive the
tion, because heretofore instead of these needle
drawing frame, since the roller necks were pressed
bearings, there were provided enlargements on
against their bearings with tremendous pressure
the rolls which held the rolls a de?nite distance
exerted on the top rolls. By means of the anti 60 apart from each other, and allowed the ?utes
friction bearings on the top and bottom rolls,
thereon to properly engage each other the de
it is evident that both top and bottom rolls rotate
sired amount, and when these enlargements be
freely in their bearings without this tremendous
came worn, which theydid quite frequently, the
pressure heretofore exerted on the old type frames
?uted rollers 20 and 30 would be allowed to ride
on the bottom roll bearings.
too close together, thus damaging the slivers and
Another important advantage of the construc
producing imperfect work. By having the needle
tion shown in the drawings is that the rapid wear
hearings on the top and bottom rolls, this exces
heretofore present in the old style drawing
sive wear is eliminated, and more perfect work
frames is eliminated since abrasive substances
cannot enter the anti-friction bearings.
Some of the objects of the invention having
been ‘stated, other objects will appear as the
description proceeds, when taken in connection
with the accompanying drawings, in which-—
is the result.
Also much greater speed is ob
The top rolls are held in‘pr'oper position by
means of a bearing block 40 having a well 4|
therein adapted to slidably receive a rod 42 which
is adjustably secured along a slot- 43 in a bar
Figure 1 is a top plan view of one section of a 75 44, by means of the rod 42 being threaded and
ous rollers at different speeds, the back roller be
ing driven at a given speed, and the next to the
having knurled nuts 45 and 46 threadably secured
thereon, and said rods at their upper ends hav
back roller has a greater speed, and the next to '
ing a knurled portion 41 so that the rod or bolt
the front roller has still a greater speed, and the
or screw 42 can be held while it is being adjusted
vertically. The rod or screw 42 is penetrated 5 front roller has the greatest speed which results
in a gradual attenuation of the ?bers. Figure 5
by a pin 48 and between pin 48 and the upper
surface of the bearing member 40, there is dis
posed a compression spring 49 for urging the
bearing member 40 downwardly against the bear
ing sleeve 32. The lower end of screw 42 has 10
a plate 35 secured thereon by means of a screw
shows in plan and partially schematically how
the single slivers resulting from a combined
drawing of slivers A to F inclusive are combined
into single slivers such as G, H, I, J, K, and L.
Heretofore, these slivers have been deposited into
suitable containers, and these containers are
then moved to the intake end of another draw
ing frame where they are introduced into the
rear roller of such drawing frame. In Figure 5,
I show a section of six sets of top and bottom
rollers of a drawing frame in combination with
an additional set of rollers forming a second
drawing frame. The shaft 10 has a pulley 63
20 mounted thereon which is connected by any suit
38, and a sleeve 39 loosely mounted around screw
42 is threadably secured in the upper end of
cavity 4| to prevent separation of screw 42 and
bearing member 40 except when the sleeve 39 is 15
removed. The member 44 is pivoted as at 52to
the portion Ill of the roll stand, and is L-shaped
and its forward free end is held in the position
shown by means of a link 53 pivoted as at 54 to
the roll stand I0, and having a slot in its upper
end adapted to ?t over the free end of the mem
ber 44. It will be noted that member 44 has an
upwardly sloping surface 55 which prevents the
link 53 from jarring off the end of member 44,
but when it is desired to release pressure on all
of the top rolls, the member 44 can be pressed
downwardly at its free end to allow the link 53
to be released and after which the entire member
44 can be pivoted as at 52 to remove the entire
assembly 40 to 49 inclusive from engagement
with the sleeve bearings 32.
The roll stands I0 project outwardly, and have
able means such as belt ‘I2 to a pulley ‘l3 dis
posed on a shaft ‘I4 which has a pulley 15 there
on on which a belt ‘I6 is mounted which leads
to a pulley 11 mounted on shaft 18, and shaft
18 has another pulley ‘I9 with a belt 60 thereon,
which belt is also mounted on a pulley III on
motor shaft 82 extending from motor 83.
shaft 82 also has a pulley 84 thereon on which
,a belt 85 is mounted, which belt also is mounted
on a pulley 86 disposed on a shaft 81 which drives
a pair of rollers 88 and 89 for coiling the slivers
. G to L inclusive through a trumpet 90 and de
mounted therein a, pair of rollers 60 and 6| with
positing the sliver passing through the trumpet
a suitable trumpet 62 through which the slivers
are coiled after being attenuated by passing
through the drawing frame section.‘ The slivers
are indicated by reference characters A, B, C,
D, E, and F. The rollers 66 and 6| have their
'90 into a suitable container, not shown. The con
tacting surfaces of rollers 88 and 89 are driven
in the same direction by means of a gear 92 on
contacting surfaces driven in the same direction
roller 88 meshing with cavities 6| in the-end of
the roller 89. The shaft 18 leads into a suitable
gear housing 93 which drives the rollers in the
by means of the driven roller 60 having cavities 40 same manner as previously described, and the
56 which are engaged by the teeth 'of pinion 51
same reference characters will apply to these
on roller 6|, the power to these rollers being
rollers as to the rollers previously described, and
transmitted through a driven shaft 58.
the structure is approximately the same.
It is thus seen that six sets of six slivers each
It sometimes happens that the top rolls lap
up, that is, the ?bers adhere to the ?utes instead 45 are incorporated into six slivers, and these slivers
instead of being deposited in cans, and then
of the ?bers being passed on through between
transferred manually and fed into another draw
the bottom and top rolls. A portion at least of
ing frame, are led directly from the ?rst draw
the slivers wind up around a top roll which means
ing frame to a second drawing frame, thus re
that the machine must be stopped, and this lap
sulting in a single silver or roving resulting from
up removed. I have provided suitable stop mo
tion or alarm means shown schematically in Fig
thirty-six slivers in the original drawing frame
ure 3 as being associated with each of the bear
without the necessity of manual transfer, and
thus greatly speeding up operation.
ing members 40, and although I have shown it
in association with only one bearing member, it
It is also seen that very much greater speed
is evident that each bearing member 40 in the ' can be obtained on account of the roller bear
machine would be connected up in parallel in a
ings, as friction is reduced to thus eliminate vibra
stop motion or alarm system. This stop motion
tion at high speeds. It has long been recognized
or alarm system comprises an insulation block
that the slow speed at which the slivers are
63 secured to each bearing block and having a
passed through a drawing frame was unneces
contact point 64 thereon. Suitably secured in 60 sary as far as the drawing process is concerned,
?xed or resilient position above the contact point
but such slow speed resulted from the fact that
64 is a contact point 65 from which a wire 66
leads to a. source of electrical energy 61, and then
to a buzzer 68, and this buzzer 68 could be a suit
able stop motion mechanism. From the buzzer
or stop motion mechanism 68, a wire I69 leads
back to contact point 64. It is thus seen that
when a lap up occurs, the bearing 40 will be
raised, which will ‘elevate contact point 64 into
engagement with contact point 65 which will stop
the machine, or give a suitable alarm.
As is well known in the art, the bottom rolls
'of a drawing frame are driven by any suitable
means such as power being applied through a
shaft 10 into a housing 1| which drives vari
on account of the great amount of friction in the
bearings of the drawing rolls vibration set in and
interfered with proper drawing of the slivers.
', By a mechanism as shown and described, the
speed at which the slivers can be passed through
the drawing frames can be very greatly increased,
thus resulting in a large increase in output from
a given number of machines.
In employing the method and apparatus as
shown in Figure 5, instead of having a trumpet
62 and rollers 60 and 6|, the slivers are guided
through a suitable eye I62 and then by means of
suitable troughs, not shown, to back rollers 30
75. of the second drawing frame.
In Figures 6, 7, and 8, there is shown a type
clusive. This means that in all probability, the‘
of bearing for the lower rolls and for the ends
said outer races will not rotate at all, and 'con
sequently, no wear will be present in the bear?
of the top rolls similar to the structure shown ‘
in Figures 3 and 4 except that the bearings
ings 40 and “to I4 inclusive. Also, it is evident‘
have inner races ‘as well as outer races- In these
that the tremendous pressure exerted by upper
bearings 40 will not be exerted on the necks I00
and H0, because the outer races will not change
?gures, the same reference characters 20 indi
cate the lower rolls, 30 the top rolls, 4!] the bear
ings pressing down on the top rolls, portion Illa - their shape under pressure, and therefore, the
of the roll stand, bearing I2, slots I01), and bolts
top and bottom rolls will run freely without hav
I6 which have been previously described. In Fig 10 ing to carry this pressure load.
ures 6, '7, and 8, the bearings are shown as hav
In the drawings and speci?cation, there has
been set forth a preferred embodiment of the
attached by swaging or otherwise a?ixing the
invention, and although speci?c terms are em
inner race onto the roll. The top rolls 30 have
ployed, they are used in a generic and descrip-_
a roller neck I00 onto which an inner race IBI 15 tive sense only and not for purposes of limita
is ?xedly secured by any suitable means such as
tion, the scope of the invention being de?ned in
swaging, and this inner race has upturned ?anges
the claims.
I claim:
I 02 at each end for con?ning rollers I03. Rotat
ably mounted over the rollers I03 isan outer race
1. In a drawing frame having top and bottom
I04 having inwardly turned ?anges I05 at its
rolls, roller necks joining the bottom rolls in an
ends for assisting in the con?ning of the rollers
end to end relation, anti-friction bearings dis
I03. A suitable oil hole I06 is provided for in
posed around the roller necks and a plurality of
troducing lubricant into the space between the
adjustable bearing members in which the outer
ing inner and outer races, so that they can be
inner and outer races.
peripheries of the anti-friction bearings rest, the
In Figure 6, I show an
elongated bearing for the roller neck H0 join
top rolls having anti-friction bearings mounted
ing the ends of the lower rolls 20 together. This
on their outer ends, downwardly urged means for
roller neck has tapered portions III. ?tting into
engaging and applying pressure on the upper
tapered cavities H2 in the proximate ends of the
portions of the anti-friction bearings 0n the
lower rolls 20 which are suitably con?ned such
ends. of the top rolls to hold the periphery of a
as by keys, not shown, so that power delivered to 30 the anti-friction bearings on the roller necks
one end of the bottom rolls will rotate all sections
and those on the ends of the top rolls in contact
of the bottom rolls. Fixedly secured on the roller
with each other, the diameters of the anti-fric
tion bearings being such as to hold the top and
neck H0 by swaging or otherwise, is an inner
race H3 having outwardly projecting circular
bottom rolls in a de?nite/I?terengaging relation
?anges H4 for assisting in con?ning rollers H5. 35 to each other, and to serve as spacing bosses for
the top and bottom rolls, the downwardly urged
Loosely mounted around the rollers H5 is an
means also preventing the rotation of the anti
outer race H6 having inwardly turned ends H‘!
friction bearings relative to each other.
_ '
for assisting the outwardly turned ends H4 of
the inner race in loosely con?ning the vrollers
2. In a drawing frame having top and bottom
H5. The outer race H1 rests in a rotatable 40 rolls, roller necks joining the bottom rolls in an
manner in one of the semi-circular bearings H
end to end relation, anti-friction bearings dis
posed around the roller necks and a plurality of
to I4 inclusive on the portion Illa of the roll
adjustable bearing members in which the outer
stand. Outer race I I6 has an oil hole H8 for in
peripheries of the anti-friction bearings rest,
troducing lubricant into the space between the
the top rolls having anti-friction bearings
inner and outer races.
mounted on their outer ends, downwardly urged
In Figure 7, the bearings for the ends of the
means for engaging the upper portions of the
top rolls are identical to the bearings for the
anti-friction bearings on the ends of the top
ends of the top rolls shown in Figure 6, and like
reference characters will apply, and the roller
rolls to hold the periphery of the anti-friction
necks H0 are identical as well as the tapered‘ 50 bearings on the roller necks and those in» the
ends I I I going into cavities I I2 in the lower rolls
ends of the top. rolls in contact with each other,
20; however, in Figure ‘7 instead of having an
common means for mounting all of the down
elongated anti-friction bearing for the entire
wardly urged means, and detachable means for
roller neck H0, I provide a separate bearing at
holding the downwardly urged means in contact
each end of the roller neck which is identical to?
position with the anti-friction bearings on the
the bearing disposed on the ends of the upper‘
ends of the top rolls, the common means for
rolls 30. Each of these bearings on the roller
holding the downwardly urged means in contact
neck H0 comprises an inner race I20 having out-‘
with the anti-friction bearings on the ends of
turned ?anges I 2II on each end thereof for
the top rolls being pivotally mounted at one side
loosely con?ning rollers I22, and loosely ?tting‘ 60 of the frame and the detachable means engag
around rollers I22 is an outer race having in
ing the other end of the pivoted member being
turned end ?anges I24 for assisting the ?ange
I2I in loosely con?ning the rollers I22. One _
located at the other side of the frame, so that
when the free end of the said common means is
detached, all of the downwardly urged means
?ange I24 has an oil hole I25 for introduction
of lubricant to the space between the inner and
outer races.
It is thus seen that in the form of the inven- 1
tion shown in Figures 6, v7, and 8, the tremen
dous downward press—ure exerted by upper bear
can be swung as a unit from out of contact with
the anti-friction bearings on the ends of the top
rolls, the bearings on the top and bottom r'ollsv
serving as spacing bosses for the top and bottom
ings 40 is applied to the outer race I04 on the 70
3. In a drawing frame having top and bottom
end of the top rolls, which pressure is trans
rolls, between which slivers are passed in a draw
mitted directly to the outer race H6 in Figure
, ing operation, the bottom rolls being joined to
6, and the outer races having inturned ?anges
gether in end to end relation by a roller neck,
I24 in Figure‘ '7, which pressure is transmitted
which roller neck‘is adapted to rotate in a suit
directly to the roll stand bearings II to_ I4 in
75 able bearing, the ends of the top rolls having
anti-friction bearings thereon, comprising inner
and outer races with rotatable bearing members
disposed between the inner and outer races, the
roller neck having thereon an anti-friction
bearing having inner and outer races, rollers
loosely con?ned between the last-named inner
4. Ina drawing frame having top and bottom
rolls, the bottom rolls being joined together by
a roller neck, anti-friction bearings disposed on
the roller neck and adapted to rest in a suitable
bearing in a roll stand, anti-friction bearings
disposed on the ends of the top rolls, and being
adapted to‘ rest on the top of the anti-friction
and outer races, the bearings on the roller neck
bearing on the roller neck, and pressure apply
and on the ends of the top rolls serving as spac
ing means for applying downward pressure onto
ing bosses for the top and bottom rolls, pressure
applying means adapted to engage the upper 10 the anti-friction bearings disposed on the ends
of the top rolls to hold the bearings on the ends
portion of the outer race on the outer ends of
of the top rolls in intimate contact with the
the top rolls and the outer race on the roller neck
bearings disposed on the roller neck, the anti
being adapted to ?t into a suitable bearing in a
iriction bearings on the roller neck and on the
drawing frame roll stand, the outer race on the
end of a top roll being adapted to ?t directly 15 ends of the top rolls serving as spacing bosses
for the top and bottom rolls.
onto the uppermost portion of the outer race'on
the roller neck whereby downward pressure ap
plied onto the outer races on the ends of the top
rolls will be transmitted directly to the outer
race of the bearing disposed on the roller neck.
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