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Патент USA US3032962

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May 8, 1962
s. KARTMANN
3,032,960
DEVICE FOR COILING TWINED THREADS
Filed Oct. 2, 1961
5 Sheets-Sheet 1
24b
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INVE NTOR:
May 8, 1962
s. KARTMANN
3,032,960
DEVICE FOR COILING TWINED THREADS
Filed Oct. 2, 1961
5 Sheets-Sheet 2
Siegfried Kortmonn
I NVENTOR.
May 8, 1962
s. KARTMANN
3,032,960
DEVICE FOR COILING TWINED THREADS
Filed Oct. 2, 1961
5 Sheets-Sheet 3
A
INVENTOR:
May 8, 1962
'
s. KARTMANN
’
Filed 001:. 2, 1961
_
3,032,960
DEVICE FOR COILING TWINED THREADS
5 Sheets-Sheet 4
May 8, 1962
5. KARTMANN
3,032,960
DEVICE FOR COILING TWINED THREADS
‘5 Sheets-Sheet 5
Filed Oct. 2, 1961
Siegfried Kun‘munn
INVENTOR.
m H“
"
BY
WWW
(WW
Unite
rates
1C6
3,032,968
Patented May 8, 1962
2
1
the spindle head according to this invention by milling
the ?utes into the cylindrical body so as to form the
teeth integrally therewith, it will of course also be pos
3,032,960
DEVICE FOR COILING TWINED THREADS
Siegfried Kartmann, Helmensteiner Str. 175%A,
sible to af?x the teeth to an inner core so as to de?ne
Lechbruck, Allgau, Germany
the ?utes.
Filed Oct. 2, 1961, Ser. N0. 142,330
The teeth may, in either case, have various
pro?les, including those encountered in conventional
Claims priority, application Germany Sept. 30, 1960
20 Claims. (Cl. 57—73)
spur gears, and their shapes may be modi?ed in accord
ance with the type of ?lament to be processed; in many
instances it will be desirable to make the maximum depth
of the ?utes greater than their spacing in order to pro
vide a relatively wide tooth ?ank against which the
thread will come to rest upon being lodged in one of
My present invention relates to a device for coiling
twined threads in the spinning or twisting of ?bers, par
ticularly in ring spinning with the aid of a traveler which
controls the winding of the thread into a roving on a
the ?utes, the thread thereupon traveling along this
suitable spool carried by a rotating spindle.
?ank toward the open (normally upper) end of the ?ute
In devices of this type, in which the thread is prevented
from forming a balloon, there is generally provided a 15 whence it drops into the next ?ute where it contacts a
more remote (i.e. downward) point of its tooth ?ank for
guiding ori?ce above the spindle head, the thread upon
a repetition of the cycle. I have found that only negli
traversing this ori?ce coiling itself around the spindle
gible changes in ?lament tension occur during passage
head before passing through the traveler. Since the de
of the thread from one ?ute to the next, the mean value
of this tension being so low that it is possible to pro
gree of twist imparted to the thread depends on the m0
bility of the traveler on its ring track, it is desirable to
keep the tension of the thread both above and below the
spindle head as low as possible in order to prevent rupture
ofthe untwisted upper thread portion and to minimize the
frictional resistance encountered by the traveler. It is
vide the teeth with fairly sharp edges without damaging
the thread.
As the latter moves upwardly toward the
open end of each ?ute, it experiences a rolling motion
which imparts to it a preliminary twist, up to 100% of
equally important, for uniformity of output, to maintain 25 its ?nal twist. This effect is particularly marked if
the tooth ?anks are provided with ridges increasing their
this tension substantially constant throughout the coiling
effective surface area, e.g. by the use of undercut ?utes
operation; I
in at least the upper, part of the cylinder. Otherwise, the
My invention has as one of its principal objects the
provision of means for realizing both these desiderata in
an extremely simple and convenient manner.
?anks may be ?at or, if desired, concave or convex.
A
further softening of the thread passage from one ?ute
to the next can be realized if the thread-contacting ?anks,
of the ?utes are positioned skew to the cylinder and
spindle axis, with an inclination opposite that of the
thread during coiling, e.g. if the ?utes increase in width
Another important object of this invention is to pro
vide means for imparting an initial twist to the thread
substantially at its point of ?rst contact with the spindle
head, thereby strengthening the thread and reducing the
35 toward the open end, this solution being equally appli
risk of undesirable loop formation.
cable to both senses of rotation.
YA further object of the present invention is to provide
In some instances, particularly with very delicate ?la
ments, it Will be advantageous to provide a buffer member
adapted to equalize even the small residual variations in
means for controlling the tension of a thread in such
device while enabling the coiling operation to be carried
out indifferently in either a clockwise or a counterclock
wise sense.
Still another object of my instant invention is to provide
40
tension produced by the gear-type spindle head described
above.
Such buffer member may take the form of a.
sleeve, preferably of upwardly converging conical con-v
?guration, freely rotatable about a portion of the spindle
adapted to be used with spool formers of cylindrical con
shaft adjacent the transition surface of the spindle head
?guration, capable of being mass-produced by simple
means, in contradistinction to the conical shapes con 45 with interposition of suitable anti-friction bearings. The
top and bottom diameters of this sleeve should equal the.
ventionally utilized to compensate for large initial thread
adjoining diameters of the spindle head and the spindle
tensions.
a device of the character referred to which is particularly
vIt is also an object of the invention to provide, in a
device satisfying the aforestated requirements, thread
guiding means free from ?yers and other eccentric ro
tating members which are dangerous to the operator and '
shaft, respectively.
-
A large variety of yarns, cords, ?bers and other ?la
ments can be processed with a system according to my
invention. Large-size rovings with axial lengths upward‘
of 50 or 60 cm. can be readily produced thereby. The
head may be made from different materials, e.g. metals,
plastics or ceramics, and may be constnlcted as a unitary
that the foregoing objects can be realized to a surprising 55 body or as an assembly of several pairs.
The invention will be described in greater detail with
extent by the provision of a generally cylindrical spindle
whose presence on a spindle head prevents the removal
of the spool without prior disassembly.
I have found, in accordance with the present invention,
head facing the guiding ori?ce, this head being provided
with a substantially cylindrical surface having peripheral
?utes, oriented preferably in axial direction, which de?ne
reference to theaccompanying drawing in which:
part of that surface; the ends of the ?utes proximal to
'FIG. 2 is an elevational view (parts broken away) of
a system similar to that shown in FIG. 1, showing a
FIG. 1 is a perspective view (partly in section) of a
spindle head embodying the invention, in combination
a ‘set of radial teeth extending over at least the major 60 with other elements of the system;
the ori?ce are open at an annular transverse cylinder
modi?ed spindle head;
face, the distal end of the cylindrical surface merging
_ FIG. 3 is a perspective view generally similar to FIG. 1
into a transition surface of progressively decreasing di
ameter approaching that of the spindle shaft, e.g. of coni 65 illustrating a further modi?cation;
. FIG. 4 is yet another perspective view (parts broken
cal shape, while the ?utes terminate at or ahead of the
away), showing a still further embodiment;
junction of the two surfaces in a transverse end Wall or
in a fairing gradually approaching the cylinder diameter.
A narrow continuous annular zone may be provided be
tween the aforementioned junction and the distal ends of
the ?utes.
While it will generally be most convenient to fashion
FIGS. 5 and 6 are fragmentary sectional views re
spectively taken on the lines V--V and VI—VI of FIG. 4;
FIG. 7 is an elevational view, generally similar to FIG.
2, of still another modi?cation; and
FIG. 8 is an elevational view of a ?nal embodiment of
3,032,960
3
a spindle head according to the invention, in combination
with additional elements of a thread-coiling assembly
(parts broken away).
Reference will ?rst be made to FIG. 8 for a description
A.
travel of the contact point; the speed of such travel de
pends of course on the difference between the feed rate
of the rollers 124a, 124b and the peripheral velocity of
tube 101, this difference in turn determining the lag of
of the overall organization of the type of coiling device
to which my invention relates. It comprises, essentially,
a spindle shaft 112 which is rotated, by any convenient
the traveler 104 behind the rotation of the tube. The
tension in ?lament 25 has a very low value which can
driving mechanism not shown, about its axis as indicated
FIG. 2, in which elements having counterparts in FIG.
be adjusted by varying the elevation of ori?ce 26.
1 have been designated by corresponding reference nu
by the arrow 100. The lower, cylindrical part of shaft
112 carries a cylindrical tube 101 of cardboard, ?ber 10 merals followed by a prime, the head 13' is generally
similar to head 13 of the preceding embodiment so that
board sheet or other conventional materials, serving as
it and its components need not be further described.
a spool former, which is frictionally ?tted on the shaft
Shaft 12' differs from shafts 12 and 112 in that its upper
or otherwise entrained by it for joint rotation. An an
portion 11' adjacent head 13' is of reduced cylindrical
nular socket 102 carries a ring 103 forming a track for
a traveler 104 which is traversed by a thread 125 to be 15 con?guration, this portion being surrounded by a sleeve 28
whose .outer surface is of substantially the same frusto
wound into a cop or roving 155; this thread, delivered in
its entirety or as individual ?laments from one or more
supply reels, bobbins or the like, not shown, passes be
tween a pair of feed rollers 124a, 1241b around a de
?ecting roller 106 and thence through an ori?ce 155 in
conical shape as the shaft portions 11 and 111. Sleeve
28 is supported on shaft portion 11' through the inter
mediary of ball bearings 29 which enable it to rotate in
dependently of the shaft, in particular to lag behind it
for equalizing the slight variations in thread tension oc
a guide plate 154 toward the head 113 of the spindle
curring as the ?lament or cord 25 skips from one ?ute
shaft; head 113 is representative of any one of the several
20" to the next.
spindle heads described in detail hereinafter with reference
The spindle top shown in FIG. 3 is substantially the
to FIGS. 1-7.
An auxiliary thread guide 161, here shown as an L 25 same as that illustrated in FIG. 8, hence the same refer
ence numerals have been used as far as applicable; ele
shaped arm having a threaded extremity secured by screws
ments having counterparts in FIG. 1 bear analogous
163, 164 to plate 154, is formed with a slot 162 ver
numerals supplemented by a “1” as a hundreds digit.
tically aligned with ori?ce 155 along the spindle axis in
The ?utes 120 terminate short of the junction 31 between
order to limit any lateral excursions of thread 125. The
latter is coiled in a few turns about spindle head 113 30 the cylindrical surface 119 and the frustoconical surface
116 so that a continuous annular zone 32 is formed
and shaft 112 before passing through traveler 104. It
above that junction. These ?utes are bounded by slightly
will be observed that the shaft 112 has a tapered inter
concave ?anks A’ of adjacent teeth 121 whose edges K’
mediate portion 111 whose conicity is such that the tube
are successively contacted by the thread 125 at points
101 on the adjoining lower shaft portion can be upwardly
removed therefrom without dii?culty, with guide plate 154 35 B’. The ?anks A’ are of generally triangular con?gura
tion, with the apex of the triangle pointing downwardly,
swung out of the way, since its inner diameter is larger
the lower ends of the ?utes being faired into the cylin
than the outer diameter of head 113. Traveler 104 and
drical surface 32. Moreover, the ?utes 120 converge
its support 102, 103 are mounted on an arm 107 form
toward the bottom, the edges K’ thus extending generally
ing part of a conventional mechanism, not further il
skew to the axis of shaft 112. Head 113 is formed with
lustrated, for reciprocating this assembly vertically as
a depending collar 35 embracing the top of frustoconical
indicated by arrow 108. The use of a de?ecting roller
shaft portion 111.
106 affords increased ?exibility in the positioning of the
FIGS. 4—6, in which double primes have been used to
feed rollers and the ?lament supply.
designate elements having counterparts in preceding ?g
FIG. 1 shows a spindle head 13, carried on the frusto
conical portion 11 of shaft 12, which comprises a cylin 45 ures, show a spindle head 13” which is generally similar
to head 113 but differs from it in the shape of its ?utes
drical top portion 14 and a conical bottom portion 15
with downwardly decreasing diameter, the latter portion
20".
forming a transition surface 16 between the peripheries
of cylinder 14 and shaft portion 11. Head 13 is re
movably secured to shaft 12 by a screw 18 whose head
in their upper reaches by lateral grooves 41 whereby the
?anks A" of teeth 21" are divided by ridges Ao into
inner zones A01 and outer zones A00. The lower parts
of the grooves are of simple trapezoidal cross-section
and bounded by ?at ?ank surfaces Au as seen in FIG. 6.
17 bears upon the bottom of a recess 34 in the upper
transverse face 22 of cylinder 14.
These ?utes, as best seen in FIG. 5, are undercut
the appearance of a spur gear. The thread 25, continu
Horizontal lines T01 (FIG. 5) tangent to the surfaces
A0, converge in radially outward direction whereas simi
lar tangents Ton (FIG. 5) and Tu (FIG. 6) to surfaces
A0,, and Au diverge outwardly. This con?guration re
ously advancing between the feed rollers 24a and 24b,
sults in intensi?ed pretwisting of the thread 25” as it
The periphery 19 of the cylinder 14 is provided with
a series of vertical ?utes 20 which form teeth 21 be
tween them, thereby giving the portion 14 of the head 13
rolls upwardly along the ?anks of the teeth 21". The
spindle axis has been indicated at SIQA.
arrow, passes through an ori?ce 26 which is formed as
In FIG. 7, which again shows the aforedescribed head
an eye on a thread-guiding rod 27. The ?utes 20, open 60
113 on its spindle shaft 112, the plate 154 of FIG. 8 has
at the top, are closed at the bottom by a wall 23 form
been supplemented by a further plate 153, positioned
ing the upper boundary of portion 15. The upper part
therebelow above the spindle head, which has a circular
of the thread includes an angle X with the edge K of
aperture 152 penetrated by a cylindrical stud 151 rising
a tooth 21 bounding the ?ute 20 in which it is received,
the thread contacting the edge K at point B where it is 65 from the recess 134 where it replaces the bolt heads 17,
17’, 117 of preceding embodiments. Thus, there is
bent onto a helicoidal path hugging the lower part of head
formed between the periphery of aperture 152 and stud
13 and the shaft portion 11. Edge K constitutes the
151 an annular slot traversed by the thread 125, the
outer boundary of a tooth ?ank A against which the
upper edge 156 of stud 151 and the lower edge 157 of
part of thread 25 received in ?ute 20 comes to rest
during the continuing counterclockwise rotation (as 70 aperture'152 being respectively positioned outside a cone
of which a thread stretched taut between ori?ce 155 and
viewed from above in FIG. 1) of the spindle shaft, the
a ?ute 120 forms a generatrix. By this means the thread
contact point B traveling upwardly on edge K until it
125 is bent twice, for more positive guidance, as it passes
reaches the annular face 22 ‘whereupon the thread falls
through the plates 154 and 153. Aperture 152 and ori?ce
into the next-following ?ute. ,It will be apparent that
the angle X progressively increases during this upward 75 155 communicate with the outer peripheries of their
of which the former may be driven as indicated by its
3,032,960
5
plates via respective slots 158, 159 which are inclined at
an angle other than that normally assumed by the thread
125 and facilitate the introduction of the thread into
these openings.
My invention is, of course, not limited to the speci?c
structural details described and illustrated; modi?cations
6
8. A device according to claim 2, further comprising
fastening means removably securing said head to said
free upper end.
9. A device according to claim 2 wherein said spindle
has an upper extremity of reduced diameter relative to
thereof, as well as combinations and substitution of com
said lower shaft portion, further comprising a sleeve free
ly rotatable on said upper extremity, said sleeve having
patible features from different embodiments herein dis
closed, will be apparent to persons skilled in the art, and
a periphery forming a transition zone between the lower
end of said head and the upper end of said lower shaft
dle axis beyond said free end, and second thread-guiding
converge in a downward direction.
are intended to be embraced by the scope of the invention 10 portion.
10. A device according to claim 9 wherein said sleeve
as de?ned in the appended claims.
is of upwardly tapering con?guration.
I claim:
11. A device according to claim 2 wherein said lower
1. A device for twining threads, comprising a spindle
shaft portion has an outer diameter larger than that of
with a spool-receiving shaft portion and a free end, a gen
erally cylindrical head coaxial with said spindle on said 15 said head.
12. A device according to claim 2 wherein said ?utes
free end, ?rst thread-guiding means in line with the spin
means at said shaft portion including a traveler ring sur
13. A device according to claim 2 wherein said ?utes
become progressively shallower at their lower ends until
rounding said spindle; said head being provided with a
substantially cylindrical surface formed with a peripheral 20 terminating on said cylindrical surface.
14. A device according to claim 13 wherein said ?utes
array of equispaced ?utes extending generally in the axial
have undercut upper portions formed by substantially
direction and forming teeth therebetween, said ?utes ex
vertical lateral grooves in the ?anks of adjacent teeth,
tending over at least the greater part of said cylindrical
surface and being closed at their ends facing said shaft
portion while being open at their opposite ends facing 25
said ?rst thread-guiding means.
2. A device for twining threads, comprising an upright
spindle with a spool-receiving lower shaft portion and a
free upper end, a generally cylindrical head coaxial with
said spindle on said free end, ?rst thread-guiding means
in line with the spindle axis above said free end, and
second thread-guiding means at said shaft portion includ
ing a traveler ring surrounding said spindle; said head
being provided with a substantially cylindrical surface
thereby separating said ?anks into inner and outer zones.
15. A device according to claim 14 wherein said ?anks
diverge radially outwardly along said outer zones.
16. A device according to claim 2 wherein said ?utes
have a substantially trapezoidal pro?le.
17. A device according to claim 2 wherein said ?rst
thread-guiding means comprises an upper guide element
forming an ori?ce in line with the spindle axis and a
lower guide element forming an annular slot, said slot
having at least one thread-contacting edge lying outside
a cone whose generatrices extend from said ori?ce to the
35 upper ends of said ?utes whereby a thread received in
said ori?ce and in one of said ?utes is bent at least once
tending generally in vertical direction and forming teeth
formed with a peripheral array of equispaced ?utes ex
therebetween, said ?utes extending over at least the greater
part of said cylindrical surface and being closed at their
on passing through said slot.
provided below said cylindrical surface with an adjoining
a radial direction.
18. A device according to claim 17 wherein at least one
of said guide elements is formed with an inclined access
lower ends while being open at their upper ends.
3. A device according to claim 2 wherein said head is 40 slot facilitating insertion of said thread from without in
19. A device according to claim 17 wherein said lower
guide element comprises a plate provided with a circular
aperture, said head being provided with an upstanding
stantially the diameter of an adjacent spindle portion
45 central stud projecting into said aperture ‘and de?ning
supporting said head.
4. A device according to claim 3 wherein said transi
said annular slot therein.
tion surface has an axial extent substantially less than
20. A device according to claim 2 wherein said ?rst
thread-guiding means comprises a lower guide element
that of said cylindrical surface.
5. A device according to claim 3 wherein said transi
forming an ori?ce and an upper guide element adjustably
50 supported on said lower guide element, said upper guide
tion surface is substantially conical.
6. A device according to claim 3 wherein said ?utes
element having a thread-receiving notch aligned with said
terminate above said transition surface, thereby leaving
ori?ce on the axis of said spindle.
transition surface having a diameter which decreases pro
gressively from that of said cylindrical surface to sub
a continuous annular zone on said cylindrical surface.
7. A device according to claim 3 wherein said head is
formed at the lower end of said transition surface with 55
a depending collar embracing said adjacent spindle por
tion.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,217,371
Kowarick _____________ .._ Oct. 8, 1940
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