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Патент USA US3041687

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July 3, 1.962
R. K. BUTLER
3,041,677
TOP ROLL WEIGHTING DEVICES
Filed May 31, 1960
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July 3, 1962
3,041,677
R. K. BUTLER
TOP ROLL WEIGHTING DEVICES
Filed May 31, 1960
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3,041,677.
United States Patent 0 " 'ice
Patented July 3, 1962
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time-consuming to keep the roller beam cleared of the
3,041,677
ever-present lint and ?y, but it makes it extremely di?i
Richard K. Butler, Whitman, Mass., assignor to Machine
craft, Inc., Whitman, Mass., a corporation of Massa
cult to equalize the pressure on all the top rolls and to
TOP ROLL WEIGHTING DEVICES
chusetts
change the total weighting of the top rolls as required
when the size of yarn and character of ?ber to be spun
are to be changed.
Filed May 31, 1960, Ser. No. 32,740
18 Claims. (Cl. 19—267)
This invention relates to spinning and roving frames,
.
Another alternative form of spring weighting in com
mon use employs a “top arm,” so-called, a channel
member of inverted U-shape overlying the necks of the
and forms a part of a comprehensive modernization of 10 front, middle and back top rolls, each roll being held
existing frames to improve and increase their production
by its neck in an end of a short arm pivoted by its
and make them easier to run.
It has to do with the means
rear end within the channel and with a spring compressed
between the web of the channel member and the roll-hold
ing end of the arm to press the arm and thus the top roll
of applying pressure to the top rolls of the pairs of op
posed rolls which successively engage the several strands
of textile ?bers and travel at progressively increased
downward, these devices usually also positioning the top
speed, to attenuate or “draw, down” the strands and I
roll without the use of cap bars. Thus each top roll
has its own spring to weight it, the channel member being
removably clamped down over the three lines of rolls.
bring the ?bers thereof into parallel relation. The rolls
of each pair must be pressed strongly together in order
to make them turn in unison and to enable them to
While this form greatly simpli?es the unweighting and
grip the ?bers, and for these purposes the top drawing 20 reweighting of the top rolls, and leaves the roller beam
rolls have been loosely mounted by their ends in cap bars a
uncluttered and accessible, it is impossible to change the
and pressed down against the bottom rolls by devices
total weighting or the relative weighting of a set of
termed saddles bearing against the necks between the
front, middle, and back rolls except through the sub
two bosses of each top roll, the saddles being conven
stitution of different springs throughout the entire frame,
tionally pulled downward by suitable links and lever 25 which takes two men about three days to do, there being
with weights hanging from the ends of the lever.
three or more springs to be changed for each pair of the
These hanging weights have well known drawbacks, '
240 or more spindles in the frame.
one of which is their tendency to swing and jump under
It is the. main object of this invention to avoid these
the vibration of the spinning frame or the underlying
shortcomings of the prior structures, so as to provide an
mill ?oor, with resulting ?uctuations of roll pressure which
improved spring-weighting device for the top rolls which
vary the grip of the rolls on the ?bers, causing the fibers ‘I can be cheaply~ and easily manufactured almost wholly
to be fed by the rolls at unequal speeds and quantities,
out of commercially available for-ms ‘of steel stock, which
thus making the yarn uneven in density and strength and
will permit changing the‘ roll weighting through a wide
hence of lessened value. Also, Wide differences in the
range, ‘which will leave the roller beam unobstructed
pressures applied to different strands in the same machine 35 and will itself afford a minimum of lint collecting sur
result from inaccuracies in the linkage system. Another
faces, and which will make it quick and easy to un
drawback has been the amount of muscular effort in
weight the top rolls and disconnect the linkage from the
volved in lifting the weights to unweight the top rolls
saddle or other pressure device as well as to reweight
as required for replacement or for their removal at fre
the rolls, by means accessible from in front of the frame
' quent intervals for various purposes, most commonly to
clear them of ?bers wrapped around them or adhering
to them, and also to avoid the formation of ?at places
by continuedpressure on the cots while the machine is
at rest.
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and above the roller beam.
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A further object is to provide apt means for weighting
. the top rolls when the pairs of drawing rolls and the‘
strands passing through them are disposed‘in a plane
at a high angle to the roller beam’s top surface. The
To avoid these and other difficulties, many forms of 45 force used to press the rolls together needs to be ex
springs have been proposed to weight the top rolls, thus
obviating the erratic action of the hanging weights due
to their inertia. When provided with suitable leverage
for multiplying their power, these springs make it‘possi
erted substantially at right angles to such’ plane for ef?
ciency. Hence spring or dead weighting from below the
roller' beam is practically precluded, and dead weighting
above the roller beam is impossible, for lack of space.
ble to increase greatly the weighting of ‘the rolls as re 50 A new way of arranging the spring weighting above ‘the
quired in the long-draft spinning of synthetic ?bers, where
beam is required which will be convenient and accessible
a weighting of 200 lbs. or more is often used, divided be
tween the front, middle and back top rolls serving the two
for applying, releasing, and changing the weighting, with
out encroaching on the creel area ‘and interfering with
strands being drafted by the respective bosses of these
the supply of roving bobbins therein which feed the draw
three rolls. However, the space between the drawing 55 ing rolls.
7
rolls and the roller beam on which they are mounted in
Other objects of the invention‘ and the manner of their
the conventional type of spinning frame aifords scant
attainment are as set forth hereinafter.
room for these springs, their perches, and the necessary
An illustrative embodiment of the invention is shown
levers or other devices for-compressing or unloading the
in the accompanying drawings, in which:
springs so as to permit the weighting and unweighting of 60 _ .FIG. 1 is a vertical transverse section through the roller
the rolls, and hence it has been the practice to mount
beam, top and bottom drawing rolls and back bar of a
the springs as well as certain of their appurtenances be
spinning frame adjacent one of the roll stands, showing‘
neath the roller beam, running the links or stirrups or
‘the top rolls and their guiding and positioning means, _
other tractive elements through holes in the roller beam
and with the weighting devices applied. ’
so as to reach up and connect with the saddles which
FIG. Zis. an axial section of the weighting device to
bear down on the roll necks. While this does get the
gether with the hand'lever. which applies and relieves the
springs under the shelter of the roller beam so that they
weighting pressure to a top roll, and the rail whereby it
collect little or no lint to fall off in bunches and get
is
mounted.
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caught and twisted into the yarns to lower their quality,
it leaves the roller beam obstructed by the stirrups and 70 H 516. 3 is a view on line 3-3 of FIG. 1, below the roll
sp'ringcompressing or unweighting levers or devices. Not
. FIG. 4 is aview in section on line -4~—4 of FIG. 2.
only does this arrangement make it more di?icult and '
The invention is shown applied to the improved apron
s
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3,041,677
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drafting spinning frame ofCotchett Patent No. 2,865,057,
and back top roll 17. It is transmitted by a roller 59
granted Dec. 23, 1958. Herein a roll stand 1 supports the .
I ‘engaging with the underside of member .19 within the
bottom drawing rolls 3, 5, 7, with the drafting plane,
channel‘thereof and positioned by a mount 58 ?xed on
the member ‘21 with capacity for adjustment lengthwise
of member vZ1. By this adjustment, the weighting thus
, de?ned by the paths of the strands 9‘ being drawn and
'lth‘e :nips-of these rolls whichdraw-them, at astccp angle
applied to the middle and ‘back top rolls is divided be
‘of around 60° from ‘the horizontal surface of roller
=beam'1l1. .iThe-top rolls 13, 15, 17 are'of the type devoid
v 'All‘the "springs 46 infuse at‘aigiveu‘time on the spinning
of pintles'ortgudgeons-on their ends.- The-means of hold
frame are carefully calibrated-in advance to have a known
vingthe top rolls in working relation'with their respective
bottom rolls is of the so-called capbarless vtype in which 10 and equal'strength whenlcompressed to the same overall
‘overlapping-members 19, ~21 of inverted -U-section hold , length. The screw, plugs 50 are the means for compressing
the springs all to the same length, and hence for obtaining
the --top rolls by their necks alone and serve to posi
uniform weighting of the rolls throughout the spinning
"~ti0n and guide the top rolls- andalsoactas saddle means
tweenrthemas‘desired,
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‘ *to apply -»to themithe weighting ‘pressure created by the
lframe, assuming of course that'the devices are properly
additionalgspace provided for the- supply bobbins-by the
‘steeply ‘tilted drafting plane.
‘one roll stand to the ‘next stand. In each length of rail
49 are ?xed the necessary ‘number of spring-weighting
devices of the. present invention. ‘These members 19, 15 mountedand that uniform distribution is made of the
weighting delivered to the front, middle and back top
21am slotted ‘at their rear ends and both are hooked
'rolls by each spring and stirrup by the means just de
" over a stub shaft 23 mounted on the regular back bar 25
scribed.
,
which guides the-strand'9 of roving being taken from a
Thar-ail 49 of angle iron on which the severalspring
supply bobbin in the‘creel (not shown), preferably that
of ' my companionpatent application ~ Serial No. 783,902, 20 weighting-devices are mounted is'made in lengths'each
one roll section long, that is, each length ‘extends from
?led Dec. 30, 1958, devised to take full advantage of the
The'bottom roll bearings 27, 29, 31 are mounted on‘
‘roll stand l-withrcapa'city for'adjustment toward and'from 25
7.
ieachiother to vary-the roll setting as needed, by means of
“cap screws‘SS-put through longitudinal slots in the roll
~slidei34‘0rof the stand -1. The-top -roll guiding members
units to serveeach-pair of rollholders 19, 21, commonly
three, pairs, included between adjacentroll stands. Each
length is mounted by bolts 61 uponia short length 63 of
similar angle iron‘ ?xed by one ?ange to the under side
of roll slide 340 by the same bolt 33 which ?xes the
middle-bottom roll bearing 29 in position on the slide 340.
‘In- accordance ‘with the present invention, each top roll 30 The rail 49 being thus suspended frorn'the middle bot;
tom roll bearings, whenever'these rollbearings are shifted
guiding member 19~is connected by its hook 35- and a
'19, 21, are made extensiblefor the same purpose.
‘to vary ‘the roll setting (spacing), by loosening the bolts
33 and sliding these parts along the slides-340, the rail
49 and the spring-weighting-devices retain their initial
spaced-lugs 44 extending from the side of ~ a casting 43 35 position with respect 'lto_the middle rolls and'are-auto
1of tubular cylindrical form equipped with oppositely I matically shifted along the roll slides ,with'these bear
extending mounting lugs 40 ‘at its upper end, whereby
Hencelhe spring-weighting devices are maintained al
it is mounted by screws 48 in register with a suitable aper
ways in the same spacedand angular relation to'the mid
ture 34 in one Web of an angle iron rail ‘49 mounted
2sheet metal stirrup 37, having an elongated hole or slot t
at eachiend, with anotherhook 39>formed on a weighting
or loading lever 41 pivotedatdl between two integral
ings.
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'adjacent'the bottom r0115 hearings in a manner to be de 40 dle drawing rolls with their roll-Weighting force un
changed regardless of changes in rollsettings, since ‘any
‘adjustment of bearings 29 alongithe stands 1 carries with
-it'the junction pieces=63 and'the le'ngths‘of rail 49'with
, a cylindrical sleeve or capsule 45“ of seamless steel tubing
their spring capsules :43, ‘4S.
extending through the hole ‘34 in rail 49 and forming the ' ‘
"Botlrthe holes 34 in rail-49 in'whichthe spring-weight
,guide, container and lint-shield for an expanding 'coil
ing devices are mounted, and? the .holes'therein .for‘screws
spring 746.
48, are made oversized to ‘allow adjustment of each
The capsule 45 is internally threaded at 'its free ‘end
spring-weighting device up or down and laterally.
t-toreceive-acylindrical threaded plug 50 ‘against which .
In installing the novel'weighting.system,>and to attain
thecoil spring-4J6 rests as its perch. Within the other
uniforrnitylof theieffective roll-weighting force of the
'end of the spring is ?tted a ?anged‘ header plug or'plunger :’ 1 several devices ‘throughout'the.spinning1frarne, a gage in
‘F51 slidingfreely inside capsule 45 and against which the
the form of a simple narrow ‘strip .of metal of uniform
scribed at the under side of-bearing slide 340 of stand 1.
'WithinIthe bore'of casting 43 is ?xed, as by press-?tting,
spring exerts its-force and which thus transmits the spring
pressure to an arm 47 forming an integraljpart of the
loading lever 41 andso disposed'with respect to hook 39
and pivot 42 as to form a bell-crank transmitting the force :1
vof's‘pring 46 as a tractive force to stirrup :37.
Thus’the force (if-spring 46 exerted on arm 47 strives to
vrotatethe-loading lever ‘counterclockwise about pivot ‘42,
thickness is inserted and gripped between an arm or stop
67 on lever v41 and't'he confronting surface/63 of the
casting 43- of each successive device to be installed. With
the'several ‘weighting devices loosely mounted in their
holes r34yand :with their lugs 2Iii-against therail 49, and
with the gage-still in place, thestirrup 37 er each de
vice in turn is engaged with hooks ‘35'and 39 and the
weighting device slid downward ‘and rearward trans
'angles‘to-the- guiding, positioning andweighting members A “ versely of'rail 49 as-far as the stirrup permits. There
19 and 21.
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(upon screws-48 are tightened to ?x the device in‘ its work
The pull of stirrup 37 is delivered through hook 35
.ing position. The gage is then withdrawn.
to the top member'19, Within, the channel ofwhich the
In this manner all the weighting devices‘are'made to
‘hook ~35 isimo'unted by cap screws 5-3» and washers with
exert the same loading force on the top rolls, since the
and in so doing urges stirrup 37 in a direction at right
capacity for adjustment at right angles to the roll axes
‘along a longitudinal slot formed for the screw in mem- '
ber '19.
' forces resulting ‘from the combined spring'tension and
leverage are equal from- unit to unit throughout the
‘frame, when the'hand 'levers'41 are each at the ‘same
A part of the load thus applied to top member 19
angle to the axis of the capsule and spring, which is the
‘isjus‘e‘d‘to weight the front‘ top roll 13, being delivered
result ‘of this method ‘of installation. _
'directly‘to the neck, of front top roll‘13aby means of‘the 70 A novel advantage ?ows from'this'arrangement. The
sgoosen‘e'ck extension :55 of member 19*. This gooseneck
hand levers‘ serve as indicators of the uniformity of load
bears directly on the sleeve or spacer 57 on the neck
ing throughout the frame. Any hand lever 41 that is out
‘ofitheball-bearing‘front top roll'13'and presses it against
of line with the rest of the hand levers in the rank ex
tending throughout the lengthof the-frame is necessarily
bottom roll 3. The remainder of the load is- ‘applied to
member 21'and distributed between middle top~rolli15 75 exerting greater or lesser weighting; on its stirrup because
3,041,677
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its leverage is different. Thus a quick glance down the
line of hand levers with the eye at their level enables
the operator to spot any departure from the intended roll
weighting. The remedy is the same operation followed
in installing the devices: inserting the spacer gage between
stop 67 and wall 68, loosening screws 48, taking up the
slack in the stirrup connections, re-tightening screws 48,
and removal of the gage.
To unweight the top rolls for removal and replace
6
ture is cheaply and easily made from stock of standard
commercially available forms, with a minimum of ma- '
chiming and no critical dimensions, and is adapted for in
stallation in new frames and also in various existing
frames, for converting and modernizing them in the in
terest of greater economy.
A still further advantage is that since all the springs
react wholly against parts mounted on the roll stands
and not on the roller beam, the forces created by the
ment, or when the machine is idle, the hand lever 41 is 10 weighting means are con?ned to the parts of and on
momentarily pulled forward and upward manually by
the roll stands, with no forces acting between the roll
means of its ?nger piece 65. This causes arm 47 to act
‘bearings, and the roller beam to require strong and hence
as a cam forcing the plunger 51 inward and relieves the
heavy roll stands to sustain them. Thus light-weight roll
pull of the hook 39 on the stirrup 37, which falls oif from
stands 1 made from standard commercial steel stock by
the hook as soon as the latter clears the bottom of the
simple bending and punching operations are adequate
slot in the stirrup. As the attendant releases the lever
41 stop 67 thereon engages the wall 68 of casting 43
and keeps the lever from swinging back out of convenient
reach. Stirrup 37 is then easily unhooked from hook
35, and the guiding, positioning and weighting members
where previously much costlier cast-iron roll stands have
been required. This economy of weight and cost is of
course‘ additional to that attained through obviating the -
rugged construction ofvlboth spinning frames and mill
buildings which gravity type dead-weighting of the top
19, 21 are free to be lifted off successively, carrying with
rolls required.
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them the top rolls, after freeing the aprons.
While ‘I have illustrated and described a certain form
Re-weighting is accomplished in obvious manner, stir
in which the invention may be embodied, I am aware
rup 37 being re-engaged with book 35 on member 19
that many modi?cations may be made therein by any
and with hook 39 on the hand lever after the latter has
person skilled in the art, without departing from the
been raised to bring hook 37 above the end of its slot in 25 scope of the invention as expressed in the claims. There
the stirrup. Release of the hand lever reinstates the
fore, I do not wish to be limited to the particular form
load of spring 46 on the, stirrup and parts connected
shown, or to the details of construction thereof, but what
therewith.
I -do_ claim is; I
v
The unweighting and re-weighting are one-hand opera
1.
A
spinning
frame
having in combination top and
tions, requiring only a moment’s time and very little
bottom drawing rolls, a roller beam, roll stands, means
physical effort, on account of the favorable leverage af
overlying and engaging the necks of the top rolls, a' rail "
forded by the handle. By lifting the lever with the palm
mounted
on the roll stands extending parallel to the rolls,
of his hand, the attendant can easily guide the stirrup
coil springs in ?xed locations on the rail in spaced rela
slot over the hook 39 with the ?ngers of the same hand.
tion to the roll stands and with their axes parallel to
The, bottom end of the stirrup is preferably forked below
the common plane de?ned by the nips of the rolls, and
the slot which receives the hook 39, so that the forked
means transmitting tension from the springs to the means
end can be placed astride the shank of the lever 41 and
engaging the roll. necks.
.
thus serve to e?ect rapid alignment of the stirrup’s slot
2. A spinning frame having in combination front, mid
with hook 39 as the stirrup is slid along the handle to
ward the hook.
_
As noted, when it is desired to change the Weighting
dle and back top rolls, front, middle and back bottom
rolls, rollstands, bearings for the bottom rolls on the
roll stands, of ‘which the middle bottom roll bearings are
shiftable along the roll stands to vary the roll spacing a
rail suspended from the middle bottom roll bearings, and
more compression to get heavier weighting, or their ten 45 spring roll weighting means mounted on the rail and
applied by the respective weighting devices, i.e., the total
weighting applied to all three top rolls weighted by a
single spring, the coil springs 46 are simply put under
sion is relieved to get lesser weighting, by screwing the
plug 50 in or out with a screw-driver.
The extent of
protrusion or intrusion of the respective plugsSil gives
visual indication of the relative tension of the several
weighting the top rolls.
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3. ‘A spinning frame having in combination top and
bottom drawing rolls, bearings for the bottom rolls, a
roller beam, roll stands on the roller beam each having
50 a portion forming a roll-bearing slide, a rail spanning
the space between one roll stand and the next roll stand
Where changes in roll pressure beyond the range of
springs.
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and adjustable along the bearing slide transversely of the
one set of springs 46 are needed, other springs of the
roller beam, a plurality of coil springs mounted on the
required tension are substituted throughout the frame
rail in spaced relation to the roll stands, means overlying I
for those initially used in the capsules 45.
The improved structure is of course applicable to spin 55 and engaging the necks of the top rolls, and means trans- .
mitting tension'from the springs to the means engaging
ning frames of types employing cap bars and saddles for
the roll necks.
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guiding and Weighting the top rolls, the stirrup 37 or its
4. Mechanism for drawing textile ?bers arranged in
equivalent being attached\to the forepart of the saddle
strand form, having in combination a roller beam, top
in usual or any preferred manner.
The device of the present invention attains the known 60 and bottom drawing rolls feeding and drafting the strands,
roll stands, a rail extending from one stand to the next
advantages of spring-weighting over dead-weighting in
above the roller beam, coil springs mounted on the, rail’
a form in which uniform weighting of all the correspond
ing rolls is attained and demonstrated, and weighting and
with their axes parallel to the paths of the strands through ‘
the rolls, and means transmitting tension from the springs
weighting can be accurately predetermined and is capable 65 to the top rolls.
5. A spinning frame having in combination top and
of adjustment as desired within an ample range, with fur
bottom drawing rolls, a roller beam, roll guiding and
ther capacity for change to a higher or lower range. It
positioning means holding the top rolls in cooperating rela
attains these advantages while additionally leaving the
tion to the bottom rolls by their necks alone, roll stands,
roller beam clear and unobstructed, and while itself pro
un-weighting is ‘quick and easy; in which the amount of
viding a minimum of surfaces on which lint can collect
bearings for the bottom rolls mounted on the roll stands,
and those easily cleaned. Further, and most important
from the standpoint of its usefulness, the application and
release of the roll-loading pressure is e?fected entirely from
the spinner’s usual position while standing erect in front
of the frame, by touch alone, sight unseen. The struc 75
with capacity for adjustment of their relative spaced
relation, and coil springs weighting the roll guiding and
positioning means and mounted on the roll stands with
capacity for shift with the bearings along the roll stands.
6. The combination according to claim 5 in which the
8,641,677
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':coil springs are automatically shifted in unison with
sion from the springs to the .respectivemeans overlying
of .the latter’slelativ'e spaced relation.
37. A spinning .frame having in combination topand
equal vtension when at equal angles to the axes of their
. respective coil springs, suchangl'es being established 'by
adjustment of the positions of'th'e ‘springs on the stands.
v13. A spinning frame having in combination top and
bottom drawing rolls, a roller beam, roll stands on such
beam, roll-weighting means adapted to load the top rolls,
certain ofthe‘bottomiroll bearings during‘the adjustment
and engaging the roll‘necks, including levers transmitting
bottom drawing rolls, a roller beam, roll-guidingv and
positioning means holding the top rolls in cooperating
relation to the bot-tom rolls by their necks alone, roll
stands, ‘bearings’ for the bottom rolls mounted on the
roll stands with capacity ‘for adjustment of their relative
.vspaced relation, a rail suspended from‘ certain bottom
~ compressed to the same length, means mounting the coil
_ roll'bearings, springs mounted on vtherail and adapted
to exert a'force in a direction parallel to the direction of
‘each other on the roll stands, and means transmitting the
movement of the hearings in adjusting their spaced rela
tion, and ‘means transmitting the said vforce to the» roll
,guiding and positioningrneans in a direction at right
when at the same angle tothe axes of their respective
a plurality of coil springs having equal strength when
springs in adjustable positions and in parallel relation to
force .of the springs to the roll-Weighting means including
levers compressing the respective springs to equal lengths
springs, and visually demonstrating unequal spring com
pression and resulting unequal roll-weighting by a differ
ent angular position to the axes of their respective springs.
angles'to its initial direction, whereby to'weigh‘t the top
‘rolls.
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8. A spinning frame having in combination a roller
14. A spinning frame having in combination top and
.~beam,--roll stands thereon, top and bottom drawing rolls
bottom drawing rolls, a roller beam, roll stands, bearings
disposed with their nips all in a common plane, a member
mounted on'the roll stands below the rolls and extending
parallel tot-he bottom rolls, spring guides ?xed on the
member and extending angularly therefrom and parallel
to thertsaid plane, expanding coil springs within the
guides,‘ weight-applying means engaging the top rolls, and
for the bottom rolls on the stands, a spring supported
by the bearings, weighting means engaging the top roll
necks, means transmitting the spring’s 'force to the weight
ingmeans, and means for varying the point of application
25 of the spring’s force to the weighting means.
applying means at right vangles to‘such plane.
9.‘ A spinning frame having in combination top and
bottom ‘drawing rolls having their nips disposed in a com
mon plane,‘ a roller beam, roll stands, weight-applying
means engaging atop .roll, amember below and parallel
toithe rolls and hired by both its ends to the roll stands
and having atransverse hole, a tube?xed-in the hole in
the member with its axis parallel to the‘ common plane,
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15. The combination according to claim 14 having
means for 'varying‘the total force applied by the spring
means transmitting the force of the springs to the weight
to the weighting means. 7
'30
an expanding coil spring within the tube, and a plunger
also within the tube and adapted to actuate the weight
applyin'g means and biased-by the axis of the spring.
10. A spinning frame having in combination top and
bottom drawing rolls; roll stands, weight-applying means
16. A spinning frame having in combination opposed
top and bottom drawing rolls, a roller beam, roll stands,
means overlying-and engaging the necks of aplurality of
the top rolls, a coil spring, means mounting the coil
spring on the roll stands below the rolls with the spring’s
axis below and parallel tothe common plane de?ned'by
the nips of the rolls, and tractive means connecting the
spring and the means overlying and engaging the roll
necks.
17. The combination according to claim 16 including
means providing for shift of the, point of connection of
engaging the top rolls, a member having its ends ?xed to 40 the tractive means with the means overlying the roll necks
' the roll stands, a tubular spring guide ?xed in'a hole in
the member, an expanding coil spring'retained within the
guide, .a stirrup attached to the weight-applying means, a
plunger in the guide receiving the thrust‘of the spring, a‘
pivotilaterally offset from the spring, and a bell-crank
pivoted thereon engaged by the plunger and transmitting
in a direction at right angles to the roll axes.
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v18. ‘A spinning frame having in combination opposed
top and bottom drawing rolls, a roller beam, rollstands,
means overlying and engaging the necks of a plurality of
the top rolls, a coil spring, means mounting the .coil spring
on the roll stands with its axis below and parallel to the
711. Spring Weighting means for the top rolls ofa spin
ning frame,.having in combination roll stands, weight
common plane de?ned ‘by thernips of the rolls, tractive
'means connected to the meansoverlying and engaging
'the roll necks and disposed atan angle to the spring’s
axis, and a bell-crank transmitting tension from the spring
eapplying means engaging the top rolls, a plunger in con
nectionewith the weight-applying means, an expanding
References Cited in the i?le of this patent
the thrust applied thereto by‘the spring as a tractive force
to the stirrup.
’
coil springbiasing the plunger and through it the weight~
applying means, a sleeve about thespring andin ?xed
connection with the-roll stands, and lever means ful
crumed on the ‘sleeve and adapted-to compress the spring
and relieve the bias of the weight-applying means.
1.12. Aspinnin'g frame having in combinationtop and
bottom drawing rolls, :a roller beam, roll stands on the
latter, means overlying and engaging the necks of a plu 60
rality of the top rolls, a plurality of equally stressed coil
springs, .means mounting the coil springs in adjustable
positions onthe roll stands,rand means transmitting ten
to the tractive means.
UNITED STATES PATENTS
1,241,586
1,831,231
2,203,424
2,332,973
2,373,176
2,688,162
2,707,807
2,787,025
2,865,057
r Vales et-al. ___________ __ Oct. 2, 1917
Dixon _________ -s ____ __ Nov. 10, 1931
Walsh _______________ __ June 4,
Louie _______________ __ Oct. 26,
Dickison ____________ .._ Apr. 10,
‘ Balmes Solanas _______ __ Sept. 7,
De Santis ~_ ___________ .__ May 10,
1940
1943
1945
1954
1955
'Balmes Solanas _______ -_ Apr. 2, 1957
Cotchett et a1 __________ __ Dec. 23, 1958
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