вход по аккаунту


Патент USA US2136515

код для вставки
Nov. 15, 1938.
Filed May 25, 1955
2 Shéets~$h§ef 1
'13‘ ‘
QIIIN' |'_||-'||
z ,2;
= 3 ”J-
-jg :
. =5
‘ ‘
z m
n l:@[:
1 Kg g
I |
% m i“t
i I 2
Nov. 15, 1938.
Filed May 25, 1956
2 Sheets-Sheet 2
Q '‘
Patented Nov. 15, 1938
Charles, Marsden, Ahmedabad, Bombay
Presidency, India
Application May 25, 1936, Serial No. 81,741
In Great Britain June 18, 1935
2‘ Claims.
This invention is for improvements in ma»
chines for winding yarn and the like in conical
chases on cops or bobbins. One object of the in
‘ vention is to provide a machine which will wind
it- the yarn or the like in such a way as to produce
a ?rm, non-shattering chase. Another object is
to increase the amount of yarn orthe like which
can be wound into a given package of predeter
mined diameter. A further‘ object is to provide
a machine capable of building the “heel” of a
package on a plain tube more quickly than can
be done with existing machines.
The invention provides a machine comprising
a winding spindle, a thread-guide and a traverse
155» cam for effecting relative reciprocation between
the thread-guide and the winding- spindle to
traverse the yarn or the like longitudinally of the
latter, which cam has a cam-track whereof the
feed and return portions are’ of different length,
and the invention is characterized by the com
bination of features that (a) the traverse-cam
is geared to the winding spindle to rotate at a
speed which is in constant proportion'tothe speed
of rotation of the latter and (b) the cam has its
cam-track so formed that the speed of traverse in
each direction varies along the stroke’ of the cam.
By this combination of features it is ensured that
during each portion of the traverse the turns of
yarn or the like are spread out‘ at some‘ points
and laid more closely together at others in a
predetermined manner. By winding the yarn or
the like in this way a ?rm non-shattering» chase
can be produced, and in the case where the pack
age is built up on a plain tube'the “heel” can be
produced more quickly than usual and more yarn
or the like can be incorporated in a package of
given dimensions.
It is preferred that the
traverse-cam shall have its cam-track so formed
that the speed of traverse varies continuously
so throughout the length of traverse in each direc
tion of traverse, so that the change from the close
wind to the relatively open wind is quite gradual.
(Cl. 242——-31)
There will now be described by way of ex
ample‘ only and with reference to the accompanying drawings a preferred form of winding ma
chine in accordance with the invention.
In the drawings
Figures 1a and 1b show the winding machine»
in plan view‘ with certain parts. omitted;
Figure 2 is a view in elevation and partly in
cross-section of the portion of the machine
shown in Figure 1a; and
Figure 3 is- a diagrammaticview illustrating
the shape of the traverse-cam.
Like reference numerals indicate like parts
throughout the drawings.
As shown in the drawings, the machine com
prises a main frame ID- having bearings II for
a tubular clutch-member l2 and a spindle l3
which lies within it. The tube 12 carries a.
grooved-wheel M which abuts against a spring
l5,_ the other end of which engages a collar l6
aflixed to the spindle [3. The worm l'l forms part
of a tube which is also affixed to the spindle l3.
Rotatably mounted on the left-hand end of
the spindle I3 is a pulley I9 having a conical
face to co-operate with a clutch-member 20 251*
formed integrally with the tube l2. The outer
end of the spindle I3 is supported in a bracket
The right-hand end of the tube I2 is formed
with dogs 22 adapted to engage with correspond
ing slots in the collar l6‘ whereby a driving-com
nection is established between the tube l2 and‘
the collar it so that when the clutch-member 28
is in frictional engagement with the pulley l9, ro
tation of the pulley drives the spindle l3.
The right-hand end of the spindle carries
spring-?ngers 23 to engage the end 24 of a'cop
holder; the other end 25 of the» cop-holder being
supported by a centering-spindle 26 mounted in
bearings in a plunger 21 pressed‘ towards the cop
by means of a spring 28 and slidable in a guide
29. The plunger 21 terminates in a knob 39
In a convenient construction the traverse-cam
has its cam-track so formed that the speed of
traverse of the yarn or the like in‘ each direction
of traverse is greatest at a location adjacent to
the smallest diameter of each conical chase.
With this arrangement the close wind occurs
near the outer periphery of the package.
In carrying out the invention the traverse-cam
may be so arranged that the shorter portion of
its cam-track serves to traverse the yarn or the
like from the largest to: the smallest‘ .diameters
of the conical chases. This will. assist in pro
whereby it may be retracted manually.
ducing a ?rm package.
cam 32, 33 is geared to the. winding spindle to
The worm I‘! (see Figure 2) engages and drives
a worm-wheel 3| having cut in its face (as de
scribed in my co-pending application Serial No.
81,742 of even date herewith) a cam-track of
two portions 32 and 33. The track is engaged by
a follower 34 on the shorter arm 35 of a bell
crank lever 35, 36, pivoted. to the frame at 31.
The arm 36 is pivoted to a link 38 which is in
turn pivoted at 39 to a traverse-rod 40 slidable
in a tubular guide 4| and in a bush 42. It will
be seen that the worm drive ensures that the
rotate at a speed which is in constant propor
tion to the speed of rotation of the latter.
The traverse rod 40 carries a screw-threaded
extension 43 whereon are mounted a progres
sion-wheel 58 and a stirrup 6| supporting the
radii of the circles BI, 82, 83 etc. may be rep
resented by
thread-guide shown at 62. The progression
etc., or in other words, the intersections of the
circles 80 to 89 with the radius line ‘H mark off
together with the point 16 ten distances rep
resenting the radial cam-throws of the ten divi
wheel 58 has a hub 59 freely slidable along the
extension 43 and embraced by the stirrup 6|. A
resilient wire 50 on the progression-wheel 58 en10 gages the screwthreads of the extension 43.‘ The
latter is coupled to the traverse rod 40 by a pin
48 engaging in a slot 41 in a. former bar 46, the
latter being arranged to be received in a diam
etral slot in the extension 43 and having a screw
15 threaded end 44 whereby it is secured to the
traverse rod 40 and retained in place by a lock
nut 45. The other end of the screw-threaded rod
43 ismounted in a universal joint 54 in a sleeve
55 attached to a bracket 51 which is an extension
20 from the main frame Ill.
The former bar 46 has an inclined and slightly
concave pro?le adapted to engage the interior of
the hub 59 of the progression-wheel 58 when the
progression-wheel is at the left-hand end of the
25 screw-threaded rod 43. The engagement be
tween the hub 59 and the former bar 45 rocks
the screw-threaded extension 43 about the uni
versal joint 54 to bring the periphery of the pro—
gressiomwheel 58 towards the cop-holder for
30 building the “heel” on the cop at the commence
ment of the winding operation. The said rock
ing of the rod 43 takes place against the action
of a tension spring 49 acting on the pin 48. For
initial adjustment of the rod 43 towards or away
35 from the winding spindle a screw 52 is provided
acting on the pin 48. The former bar 45 and
the associated parts are constructed as described
in co-pending application Serial No. 33,187 ?led
25th July, 1935.
The traverse-cam 32, 33 is of a special shape
as is illustrated in Figure 3. Its shorter portion
33 occupies approximately 1/; of a complete ro
tation so that its longer portion 32 has more than
three times and nearly four times the angular
extent of the shorter portion 33. Also each of
' the portions 32 and 33 of the cam has a pro?le
somewhat steeper than that of an Archimedean
spiral. For comparison the chain lines shown at
‘E3 and 74 in Figure 3 illustrate the pro?le of
Archimedean spirals of the same throw and an
gular extent as the cam portions 32 and 33.
That is to say the spirals ‘l3 and T4 are so formed
that through a given angle of movement there
55 is always the same extent of radial throw. With
the cam portions 32 and 33, however, the extent
of radial throw over a given angle of movement
increases gradually from the lowest point of the
cam shown at T5 to the highest point shown at
60 '46. This is shown more clearly by the markings
given on a radius line 11 passing through the
point '56. These markings are arrived at by di
viding the angle subtended by each cam portion
and 33 into 10 equal parts by radius lines ‘i8,
65 ‘i9 and describing, about the axis of rotation of
the cam, concentric circles 80, 8|, 82 . . . . . . . 83
passing respectively through the lowest point '15
sions of the cam pro?le and these distances are 10
equal to y+b, y+2b, y+4b . . . . y+512b.
subtracting each of these distances from its suc
ceeding distance, there is obtained the following
geometrical series having the common ratio 2:—b,
2b, 4b, 8b‘ . . . . . . 256221. The symbols R, 3/ and b 15
have been given for convenience for their values
may be varied, as may also be the common ratio,
to suit different conditions of winding, if desired.
The pro?les of the cam portions 32 and 33 are
so shaped as to give, adjacent to the highest 20
point 16 of the cam, a speed of traverse which
is approximately three times that adjacent to
the lowest point 15 of the cam.
When it is required to build a cop 63 on a plain
cylindrical tube the progression-wheel 58 is 25
moved to its extreme left-hand position (the
spring 60 being released for this purpose) until
the hub 59 rides along the former bar 46 and.
consequently rocks the screw-threaded rod 43 to
bring the progression-wheel towards the Wind 30
ing spindle. With the periphery of the pro
gression-wheel 58 just touching the bare cop
tube the machine is set in motion and winding
commences. The spindle l3 rotates in the di
rection of the arrow shown in Figure 1a so that 35
the worm wheel 3| is driven clockwise as seen in
Figure 2.
The shape of the cam-track 32, 33
causes the traverse rod to be moved outwards
comparatively quickly owing to the short length
and comparatively steep angle of the spiral 33 40
but the inward movement of the traverse rod is
performed at a much slower speed owing to the
greater length and more gradual slope of the
spiral 32. During the inward movement of the
traverse rod 40 the turns of yarn are, therefore, 45
laid more closely together. The inward travers
ing movement of the traverse rod may thus be
termed the main or laying-on traverse. During
the outward movement of the traverse rod the
turns of yarn are spaced relatively widely apart
and therefore at a greater angle to the axis of
the winding spindle. The widely spaced turns
of yarn laid during the outward movement of
the traverse rod cross the turns of the preceding
layer approximately at right angles and serve 55
to bind them in place.
During the winding operation the winding spin
die [3 rotates at a constant or approximately
constant speed and the movement of the trav
erse rod 45 in each direction is gradually varied 60
so that the highest speed of traverse occurs when
the traverse rod is at a point adjacent to its
outer extreme of travel. The variation of speed
in the main or laying-on traverse causes the
turns of yarn to be closer together at the “heel” 65
of the cop than towards the nose end and thereby
serves to build up the “heel” of the package more
of the cam and the points at which the radius
lines ‘F3 and "i9 intersect the cam pro?le 32, 33.
70 The cam is so designed that the distances between
adjacent markings shown on the radius line 11 in
crease from the center of the cam radially out
quickly than would otherwise happen. The
building of the “heel” is controlled by the pro
gression-wheel 58 which acts, in known manner, 70
to advance the point of winding~on from left to
wardly by amounts corresponding to the terms
ment of the winding operation the progression
wheel 58 is displaced to a position adjacent to
the yarn support by the action of the former 75
of a geometrical progression. Thus, if the ra
75 dius of the circle 80 is represented by R, the
right as seen in Figure 1b.
At the commence
bar 46, and as layers of yarn are laid on the yarn
parts may also be arranged so as to wind on to a
support, the periphery of the wheel 58 makes
pirn having a preformed conical end on which
contact with them and is rotated so as to be
.moved progressively towards the right as seen
in Figure 1b. The stroke of the thread-guide
62 is thereby also progressively displaced. As the
hub 59 of the progression-wheel travels to the
right the screw-threaded rod 43 gradually returns
under the action of its spring 49 into a position
10 parallel with the winding spindle. When it has
reached this position the progressive displace
ment of the initial layers of yarn has resulted
‘ in the building of the “heel”.
Subsequently the
yarn is wound in conical chases to form a substan
15 tially cylindrical package with coned ends. Dur
ing the building of the “heel” the variation in
the speed of the inward movement of the traverse
rod 40 causes a greater mass of yarn to be laid
at the left-hand end of each layer as seen in
the conical chases of yarn are laid.
This ar
rangement can be secured by moving the spindle
I3 to the right (as viewed in Figures 1a. and 2) 5
relatively to the tube 12, collar 16 and worm H.
The endwise movement of the spindle may be
permitted by releasing appropriate grub-screws
which are subsequently re-tightened. The ex
tent of movement of ‘the spindle need only be 10.
sufficient to provide that, at the commencement
of the winding operation, the hub 59 of the pro
gression-Wheel 58 is out of engagement with the
former bar 46.
It is to be understood that the invention is not 15
restricted to the precise constructional details
shown in the drawings. An alternative way of
adapting the machine to wind on to a cone
ended pirn is to turn the former bar 46 to a suit
Figure 1b and consequently the building of the able extent about the axis of the traverse rod 40. 20
I claim:
“heel” is accelerated. It follows from a- rapid
1. In a machine for winding strand material
building of the “heel” that the quantity of yarn .
which can be wound into a package of given in conical chases having means for rotatably
diameter and length is increased. After the supporting a package, means for rotating the
“heel” has been formed the variations in the package, traverse-mechanism for traversing the 25
speeds of the inward and outward movements strand material longitudinally of the package,
gearing positively coupling said traverse-mech
of the traverse rod 40 have no effect on the shape
‘of the cop, but due to the Winding on of a greater anism to the package-rotating means, and a pro
amount of yarn at the base than at the nose of gression device for progressing the traverse
roke along the length of the package, the com 30
each chase the operation ‘of the progression
wheel is made more certain. The change in bination comprising a rotatable traverse cam, and
a track on said cam having feed and return por
speed of the laying-on traverse due to the spe
cial formation of the cam portion 32 also assists tions of different lengths and having each of said
portions of the track so formed that the radial
in producing a ?rm package, due to the spread
ing out of the turns of yarn towards the nose cam-throws of a series of divisions of the cam 35
of the chase, the tendency is to wind a tight nose track subtending equal angles at the axis of the
which will support the rearward layers or turns
and prevent them from "sloughing off.”
During the movement of the traverse rod by
40 the cam portion 33 the yarn is laid in more open
formation and these open wound turns serve to
bind the previous layer in place. The function
of the change in speed in the traverse rod due
to the special formation of the cam portion 33
45 is as follows. To preserve a uniform crossing
angle between the turns laid during the‘ quick
return and the turns laid in the preceding layer.
The laying-on or slow traverse and quick re
turn traverses can take place in the opposite
directions to those I have provided.
The provision of a concave pro?le to the former’
bar 46 has the effect of producing a convex shape
to the heel of the cop.
It is found possible with the variable speeds
of traverse provided by the cam 32, 33 still to
55 obtain a ?rm tight wind even though the pro?le
of the former bar is concave.
When the cop has been fully built the pro
gression-wheel 58 operates suitable devices, such
as those described in my co-pending application
Serial No. 33,187, to release the cone 2!] from the
pulley l9 and thereby interrupt the drive of the
In the method of operation described above
the screw 52 is so set that after the progression
Wheel 58 parts company with the former bar 46,
as in the position shown in Figure lb, the screw
cam are so correlated that the differences in
radial cam-throw between each successive adja
cent pair of cam-track divisions. increase in ac
cordance with a geometrical progression towards ‘40
that point on the cam-track which corresponds
to the feed of the strand material to the nose
of the chase.
2. In a machine for winding strand material
in conical chases having a rotatable winding spin
dle, traverse-mechanism for traversing the strand
longitudinally of the winding spindle, gearing
positively coupling said traverse-mechanism to
the winding spindle, and. traverse-progression
means for advancing the traverse-stroke along
the winding spindle, the combination comprising 50
a rotatable traverse cam, and a cam-track on
said cam having feed and return portions which
are of different lengths with the angular extent
of the longer portion at least three times that 55
of the shorter portion and which are each formed
to give a gradually increasing speed of traverse
towards the nose of the chase with a traverse
speed at the nose of the chase approximately
three times that at the base of the chase and
which portions are each so formed that the ra
dial cam~throws of a series of divisions of the
cam-track subtending equal angles at the axis
of the cam are so correlated that the differences
in radial cam-throw between each successive ad
jacent pair of cam-track divisions increase in
accordance with a geometrical progression to
threaded rod 43 lies parallel to the winding spin
wards that point on the cam-track which corre
dle and, as shown in the drawings, co-axially
with the traverse rod 40. However, the parts
sponds to the feed of the strand material to the
nose of the chase.
70 may be differently arranged so as to give any
desired shape to the “heel” of the cop. The
Без категории
Размер файла
704 Кб
Пожаловаться на содержимое документа