U.S. patent number 3,589,118 [Application Number 04/843,687] was granted by the patent office on 1971-06-29 for intermediate storer disc for apparatus for stranding a twisted unit of a cable.
This patent grant is currently assigned to Siemens Aktiengesellschaft. Invention is credited to Klaus Hascher, Alfred Strelow.
United States Patent |
3,589,118 |
Strelow , et al. |
June 29, 1971 |
INTERMEDIATE STORER DISC FOR APPARATUS FOR STRANDING A TWISTED UNIT
OF A CABLE
Abstract
An intermediate pulloff disc in apparatus for stranding a
twisted unit of a cable has a storage surface for the twisted unit
and a plurality of grooves formed in such surface and extending in
the direction of the axis of revolution for at least part of the
altitude of such surface. A tumbling deflector ring has a plurality
of spaced teeth extending therefrom and engaged in the grooves of
the storage surface for displacing a section of twisted unit stored
in such surface.
Inventors: |
Strelow; Alfred (Berlin,
DT), Hascher; Klaus (Berlin, DT) |
Assignee: |
Siemens Aktiengesellschaft
(Berlin, DT)
|
Family
ID: |
3592865 |
Appl.
No.: |
04/843,687 |
Filed: |
July 22, 1969 |
Foreign Application Priority Data
|
|
|
|
|
Jul 23, 1968 [OE] |
|
|
A7,116/68 |
|
Current U.S.
Class: |
57/294; 57/59;
57/66 |
Current CPC
Class: |
H01B
13/0207 (20130101); D07B 7/02 (20130101) |
Current International
Class: |
D07B
7/02 (20060101); D07B 7/00 (20060101); H01B
13/02 (20060101); D01h 007/02 (); D07b 003/02 ();
H01b 013/04 () |
Field of
Search: |
;57/34,34AT,59,66,66.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Petrakes; John
Claims
We claim:
1. In apparatus for stranding a twisted unit of a cable in
different directions of stranding, an intermediate pulloff disc
comprising
a storage surface for the twisted unit having an altitude, an axis
of revolution and a plurality of spaced grooves formed in the
storage surface of said disc and extending in the direction of the
axis of revolution for at least part of the altitude of said
storage surface; and
a tumbling deflector ring having a plurality of spaced teeth
extending therefrom and engaged in the grooves of said storage
surface for displacing a section of twisted unit stored on said
storage surface.
2. An intermediate pulloff disc as claimed in claim 1, wherein said
grooves are equidistantly spaced from each other, the distance
between next-adjacent grooves being equal to the width of a
groove.
3. An intermediate pulloff disc as claimed in claim 1, wherein the
teeth of said deflector ring are equidistantly spaced from each
other and each of said teeth is engaged in a corresponding one of
said grooves.
4. An intermediate pulloff disc as claimed in claim 1, wherein said
storage surface is of cylindrical configuration and said deflector
ring is of annular configuration.
5. Apparatus for stranding a twisted unit of a cable in different
directions of stranding, comprising
a plurality of cable elements;
a takeup point for forming a twisted unit from said cable
elements;
a payout point; and
intermediate pulloff means positioned between said takeup point and
said payout point engaging said twisted unit, said intermediate
pulloff means rotating said twisted unit about an axis of rotation
a number of twists between said takeup point and said payout point
and providing a different direction of stranding of the twisted
unit for individual section lengths, said intermediate pulloff
means comprising an intermediate pulloff disc having a storage
surface for the twisted unit, an axis of revolution, a plurality of
spaced grooves formed in the storage surface of said disc and
extending in the direction of said axis of revolution for at least
part of the altitude of said storage surface and a tumbling
deflector ring having a plurality of spaced teeth extending
therefrom and engaged in the grooves of said storage surface for
displacing the section of the twisted unit stored on said storage
surface, a takeup reel at the takeup point for supplying the
twisted unit to the storage surface of said pulloff disc in the
direction of the axis of rotation of said intermediate pulloff
means and a payout reel at the payout point and on the axis of
rotation of said intermediate pulloff means for removing the
twisted unit from the storage surface of said pulloff disc in the
direction of said axis of rotation.
6. Apparatus for stranding a twisted unit of a cable in different
directions of stranding, comprising
a plurality of groups of cable elements;
a plurality of takeup points each for forming a twisted unit from
the cable elements of a corresponding one of said groups of cable
elements;
a plurality of payout points each cooperating with a corresponding
one of said takeup points;
a plurality of parallel-operating intermediate pulloff means each
positioned between a corresponding cooperating takeup point and
payout point and engaging a corresponding twisted unit, each of
said intermediate pulloff means rotating the corresponding twisted
unit about an axis of rotation a number of twists between the
corresponding takeup point and the corresponding payout point and
providing a different direction of stranding of the corresponding
twisted unit for individual section lengths, each of said
intermediate pulloff means comprising an intermediate pulloff disc
having a storage surface for the twisted unit, an axis of
revolution, a plurality of spaced grooves formed in the storage
surface of said disc and extending in the direction of said axis of
revolution for at least part of the altitude of said storage
surface and a tumbling deflector ring having a plurality of spaced
teeth extending therefrom and engaged in the grooves of said
storage surface for displacing the section of the twisted unit
stored on said storage surface, a takeup reel at the corresponding
takeup point for supplying the corresponding twisted unit to the
storage surface of said pulloff disc in the direction of the axis
of rotation of said intermediate pulloff means and a payout reel at
the corresponding payout point and on the axis of rotation of said
intermediate pulloff means for removing the corresponding twisted
unit from the storage surface or said pulloff disc in the direction
of said axis of rotation;
an additional takeup point for forming a resultant twisted unit
from the twisted units of said plurality of intermediate pulloff
means;
an additional payout point; and
additional intermediate pulloff means operating in series with said
plurality of intermediate pulloff means positioned between the
additional takeup point and the additional payout point and
engaging the resultant twisted unit, said additional intermediate
pulloff means comprising an additional intermediate pulloff disc
having a storage surface for the resultant twisted unit, an axis of
revolution, a plurality of spaced grooves formed in the storage
surface of said disc and extending in the direction of said axis of
revolution for at least part of the altitude of said storage
surface and a tumbling deflector ring having a plurality of spaced
teeth extending therefrom and engaged in the grooves of said
storage surface for displacing the section of the resultant twisted
unit stored on said storage surface, an additional takeup reel at
the additional takeup point for supplying the resultant twisted
unit to said additional intermediate pulloff means in the direction
of the axis of rotation of said additional intermediate storer and
an additional payout reel at the additional payout point and on the
axis of rotation of said additional intermediate pulloff means for
removing the resultant twisted unit from said additional
intermediate pulloff means in the direction of said axis of
rotation.
Description
DESCRIPTION OF THE INVENTION
The present invention relates to apparatus for stranding a twisted
unit of a cable. More particularly, the invention relates to an
intermediate pulloff disc for apparatus for stranding a twisted
unit of a cable.
The present production of communication cables is concerned with
combining a plurality of stranding or twisting operations, which
heretofore have been undertaken separately, in a single working
operation in order to increase the efficiency and economy of
production. The twisting or stranding operation involves the
twisting or stranding of spiral or quad cables and modular bunching
or combining of the twisted cables. In order to accomplish a single
working operation, twisting devices are required which would enable
the stranding of the twisted units previously stranded from a
plurality of cable elements, in successive sections of length,
alternating between a left hand or S-twist and a right hand or
Z-twist. Stranding operations of this type, referred to as pendulum
stranding or SZ stranding, have the advantage of permitting the
elements to be twisted to be run off or removed from stationary
takeup stands. Furthermore, further processing of a twisted unit
produced by SZ twisting of the cable elements may be squarely
effected during the same operation.
The devices previously utilized for SZ stranding generally utilize
longitudinal storers or intermediate storers which provide a double
function. The intermediate storers simultaneously function as
takeup devices for the supplied incoming length section of the
twisted unit and as payout devices for the removal of the outgoing
length section. The direction of twisting is thereby alternated at
intervals depending upon the length content of the intermediate
storer. An intermediate storer is described, for example, in U.S.
Pat. No. 3,169,360. The intermediate storer described in the
aforementioned patent comprises a disc having a groove for guiding
the twisted unit.
The production of communication cables requires apparatus which
pulls the stranded elements or cable elements, or even the cable
core through a cable producing machine such as, for example, a
stranding or roping machine or a warm-type feed press. Pulling
apparatus for stranding and cable producing machines, which pulls a
cable, is disclosed in German Pat. No. 948,582. In the apparatus
disclosed in the German patent, the wire rope or cable is wound on
a storage or storer disc, in several turns, and is deflected upon
said disc by a deflector ring mounted on said disc. The deflector
ring tumbles on the storage surface of the storage disc.
It is of vital importance that during the pulling or drawing off of
the twisted unit or stranded elements of the cable, utilizing the
storage disc damage of the insulation of the wires of the stranded
elements be prevented during the deflection of said elements on
said storage disc. Since the inner diameter of the deflector ring
is larger than the outer diameter of the storage disc, in order to
enable said deflector ring to tumble upon the storage surface of
said storage disc, an annular slot, gap or space is provided
between said deflector ring and said storage disc. The very thin
stranded elements of the twisted unit or cable have a tendency to
become clamped in such space between the deflector ring and the
storage disc during the process of deflection on the storage
surface of said storage disc. This results in damage to the
insulation on the stranded elements.
The principal object of the present invention is to provide a new
and improved apparatus for stranding a twisted unit of a cable.
An object of the present invention is to provide apparatus for
stranding a twisted unit of a cable in different directions of
stranding.
An object of the present invention is to provide a new and improved
intermediate pulloff or storer disc for apparatus for stranding a
twisted unit of a cable.
An object of the present invention is to provide a new and improved
storer disc for apparatus for stranding a twisted unit of a
cable.
An object of the present invention is to provide a storer disc
which prevents damage to the insulation of the stranding elements
of a twisted unit of apparatus for stranding a twisted unit of a
cable.
An object of the present invention is to provide an intermediate
storer disc for apparatus for stranding a twisted unit of a cable,
which intermediate storer disc functions with efficiency,
effectiveness and reliability.
An object of the present invention is to provide an intermediate
storer disc for apparatus for stranding a twisted unit of a cable,
which intermediate storer disc is economical in production and
operation.
An object of the present invention is to provide an intermediate
storer disc for apparatus for stranding a twisted unit of a cable,
which intermediate storer disc insures a reliable supply to and
removal from the intermediate storer of the twisted unit.
An object of the present invention is to provide an intermediate
storer disc for apparatus for stranding a twisted unit of a cable,
which intermediate storer disc prevents clamping of stranding
elements between a deflector ring and the storage surface of the
disc.
In accordance with the present invention, the intermediate storer
disc has a storage surface for the twisted unit, an altitude, an
axis of revolution and a plurality of spaced grooves formed in the
storage surface of the disc and extending in the direction of the
axis of revolution for at least part of the altitude of the storage
surface. A tumbling deflector ring has teeth extending therefrom
and engaged in the grooves of the storage surface. The tumbling
deflector ring displaces the section of the twisted unit stored on
the storage surface. The deflector ring continually displaces the
turns of the twisted units stored on the storage surface of the
intermediate storer disc, so that subsequent turns may be taken up
by said intermediate storer disc without superposition on the turns
already stored. This may result in damage to the insulation of the
wire. This type of damage cannot occur on the intermediate storer
disc of the present invention. The deflector ring on the storage
surface of the storer disc is in comblike engagement with such
storage surface and thereby prevents the clamping of stranding
elements between the deflector ring and the storer disc, so that
such damage is Prevented.
The grooves are equidistantly spaced from each other. The distance
between next-adjacent grooves is equal to the width of a groove.
This provides the maximum engagement area for the stranding or
stranded elements at the deflector ring, and at the same time
provides the maximum engagement area for the stranded or stranding
elements on the storer disc.
The teeth of the deflector ring are equidistantly spaced from each
other. Each of the teeth is engaged in a corresponding one of the
grooves.
The storage surface of the disc is of cylindrical configuration and
the deflector ring is of annular configuration.
In order that the present invention may be readily carried into
effect, it will now be described with reference to the accompanying
drawings, wherein:
FIG. 1, which is FIG. 1 of copending U.S. Patent application, Ser.
No. 843,664 filed July 22, 1969, is a schematic diagram of an
embodiment of the apparatus of the present invention;
FIG. 2, which is FIG. 6 of copending U.S. Pat. application, Ser.
No. 843,664, filed July 22, 1969, is a schematic diagram of a
modification of the apparatus of FIG. 1 of the present
invention;
FIG. 3 is a diametrical sectional view of an embodiment of the
intermediate pulloff disc of the present invention;
FIG. 4 is a radial sectional view of part of an embodiment of the
intermediate pulloff disc of the present invention;
FIG. 5, which is FIG. 2 of a copending U.S. Pat. application, Ser.
No. 843,664 filed July 22, 1969, is a top view of an embodiment of
the intermediate pulloff disc of the present invention with a
twisted unit thereon;
FIG. 6 is a top view of an embodiment of the intermediate pulloff
disc of the present invention without a twisted unit thereon;
and
FIG. 7 is a side view of the embodiment of FIG. 6 of the
intermediate pulloff disc of the present invention.
In the FIGS. the same components are identified by the same
reference numerals.
As disclosed in pending U.S. Pat. application, Ser. No. 843,664
filed July 22, 1969, the apparatus of FIG. 1 twists a plurality of
stranding or cable elements into a twisted unit, the twisting
direction of which changes for each section of length. Thus, for
example, in FIG. 1 four cable elements or wires are twisted into a
spiral quad. In FIG. 1, the cable elements 1 are supplied from
storage drums 2 to a nipple 3. The nipple 3 combines the cable
elements 1 and supplies them to an intermediate storer arrangement
4. The twisted unit removed from the intermediate storer
arrangement 4 is then wound on the drum 5.
The cable elements from the nipple 3 are supplied to a takeup reel
6 of the intermediate pulloff or storer arrangement 4. The takeup
reel 6 supplies the twisted unit formed by the takeup reel 6 to the
intermediate storer disc 8 of the intermediate storer arrangement
4. The intermediate storer disc 8 has a tumbling deflector ring 7
mounted thereon. The twisted unit is removed from the intermediate
storer disc 8 to a payout reel 9. The intermediate storer disc 8
may be rotated in a counterclockwise direction, as indicated by the
single arrow, about an axis C-D, passing through the center M of
said disc. The intermediate storer disc 8 is driven about the axis
C-D by the twisted unit wound on its storage surface (FIGS. 4 and
5).
The intermediate storer arrangement 4, which comprises the takeup
reel 6, the intermediate storer disc 8 and the payout reel 9, is
rotatable about an axis of rotation A-B, in both clockwise and
counterclockwise directions, as indicated by the pair of arrows in
FIG. 1. During the stranding of the cable elements 1 to form the
twisted unit 10, said elements are twisted in a specific direction
while they are being taken up by the takeup reel 6 at a point a.
The intermediate storer arrangement 4 rotates about its axis of
rotation A-B and periodically changes its direction of rotation.
The twisted unit is then supplied by the takeup reel 6 to the
intermediate storer disc 8 and is wound a plurality of times on
said disc in accordance with the desired position of a section of
length of said twisted unit. Each section of length of the twisted
unit has the same direction of twist or twist direction.
The number of windings of the twisted unit on the intermediate
storer disc 8 varies in accordance with the capacity of the
intermediate storer arrangement 4, which depends upon the length of
a section of said twisted unit, twisted in the same direction. When
the full capacity of the intermediate storer arrangement 4 is
utilized by a length section of the twisted unit, twisted in the
same direction, the direction of rotation of said intermediate
storer arrangement is reversed. As a result of the reversal of the
direction of rotation, the twisted unit is removed to a point b,
where the payout reel 9 is positioned, with an additional twist in
the same direction, during the runoff of said twisted unit from the
intermediate storer disc 8. The payout reel 9 superimposes the
additional twist on the initial twist.
Simultaneously with the removal of the twisted unit to the payout
reel 9, a new length section of twisted unit is supplied to the
intermediate storer arrangement 4 and is stranded with a twist in
the opposite direction. When the full capacity of the intermediate
storer arrangement 4 is utilized by the new length section, the
direction of rotation of said intermediate storer arrangement is
again reversed, so that said new length section is also provided
with an additional twist in the same direction, during its removal
from the intermediate storer disc 8. The additional twist is
superimposed upon the next-preceding twist. In this manner, the
twisted or cable elements 1 are alternately provided in sections of
length with two opposite twists of equal magnitude.
In order to prevent the necessity for reversing the direction of
rotation of the intermediate storer arrangement 4, said
intermediate storer arrangement must have a maximum storage
capacity. The maximum storage capacity is provided in the apparatus
of the present invention by winding the twisted unit on the storage
surface of the intermediate storer disc 8 in a plurality of
adjacent turns (FIGS. 4 and 5). The intermediate storer disc 8 may,
for example, be of I cross-sectional configuration. The storage
surface of the disc is the cylindrical peripheral outer
surface.
The turn of the twisted unit supplied to the intermediate storer
disc 8 and the turn of said twisted unit removed from said disc are
mutually displaced relative to a plane perpendicular to the axis
C-D (FIG. 5). Thus, rotation of the intermediate storer disc 8
about the axis of rotation A-B perpendicular to the axis C-D would
produce a rotary movement of the supplied portion of the twisted
unit, including the takeup reel 6, and the removed portion of said
twisted unit, including the payout reel 9, about said axis of
rotation. This would result in supplying the twisted elements or
cable elements and in taking up or supplying and removing or
running off the twisted unit to or from the intermediate storer
disc 8.
As shown in FIG. 5, the axis of rotation A-B of the intermediate
storer arrangement 4 is so selected that the takeup reel 6 is
positioned at the takeup point a and the payout reel 9 is
positioned at the payout point b on said axis of rotation. The
twisted unit is supplied by the takeup reel 6 to the intermediate
storer disc 8 in the direction of the axis of rotation A-B and said
twisted unit is removed from said intermediate storer to the payout
reel 9 in said direction. This results in a satisfactory and
protected supply system for the cable elements 1 to the
intermediate storer arrangement 4. The dimensions of the
intermediate storer disc 8 are such that its axis C-D and its axis
of rotation A-B are at an angle of less than 90.degree. with each
other (FIG. 5).
In a modification of the embodiment of FIG. 1 of the present
invention, apparatus for stranding cable elements, particularly
communication cables, comprises a plurality of systems of the type
shown in FIG. 1. The systems operate in parallel with each other
and each corresponds to the embodiment of FIG. 1. An additional
intermediate storer arrangement operates in series with the
plurality of intermediate storer arrangements to twist the
resultant twisted unit supplied by said plurality of intermediate
storer arrangements. It is thus possible to combine two stranding
or twisting processes in the same working operation. The stranding
or twisting apparatus which is connected in series with the
plurality of intermediate storer arrangements, may, in accordance
with the present invention, comprise a rotating additional takeup
reel for stranding the resultant twisted unit from said
intermediate storer arrangements in a stranding nipple. An
additional intermediate storer and an additional payout reel are
also provided and function together with the additional takeup reel
as the additional intermediate storer.
It is especially preferable that the supply to and removal from the
additional intermediate storer arrangement of the resultant twisted
unit have the same speed relation to the speed of rotation of the
intermediate storer arrangements as in the embodiment of FIG.
1.
As described in copending U.S. Pat. application, Ser. No. 843,664
filed July 22, 1969, FIG. 2 illustrates the modification of the
embodiment of FIG. 1, wherein a plurality of intermediate storer
arrangements 4 are provided in a manner whereby they operate in
parallel. An additional intermediate storer arrangement 22 is
provided in a manner whereby it operates in series with the
parallel-connected intermediate storer arrangements 4 to strand or
twist the resultant twisted unit provided by said
parallel-connected intermediate storer arrangements.
In FIG. 2, five intermediate storer arrangements 4 are illustrated.
In each of the apparatus for the intermediate storer arrangements
4, communication cable elements or wires 1 are supplied by a
storage drum 2 to the corresponding immediate storer arrangement.
Each of the intermediate storer arrangements 4 produces a spiral
quad 10 simultaneously with the others. The twisted units or spiral
quads 10 are combined to a resultant twisted unit by the additional
takeup reel 31. The resultant twisted unit is then twisted into
modular bunches or units 23 by the additional intermediate storer
arrangement 22. The speed of removal of the twisted, twisted unit
23 from the additional intermediate storer arrangement 22 is
determined by the speed of rotation of a takeoff disc 15.
Each of the intermediate storer arrangements 4 periodically
alternates its direction of rotation and therefore its direction of
twisting. When they are combined to form the resultant twisted
unit, the individual twisted units 10 are stranded together in a
specific direction. Preferably, the speed of rotation and, if
necessary, the direction of rotation, of the intermediate storer
arrangements 4 are made to vary. This provides electrical
decoupling of the twisted unit or spiral quad 10 which is a
component of the twisted, twisted unit or modular bunch 23. When an
intermediate storer arrangement 4 is filled to capacity with a
section of length of twisted unit having the same direction of
twisting, the direction of rotation of such intermediate storer
arrangement is reversed. The intermediate storer arrangements 4
rotate in the same direction, so that they are reversed in
direction at the same time.
As a result of the change in direction of the rotation of the
intermediate storer arrangements 4, the twisted units 10 are
provided with an additional twist, in the same direction, which is
superimposed upon the initial twist provided prior thereto during
the supply of the twisted unit to the intermediate storer
arrangement. Simultaneously, new sections of twisted units are
supplied to the intermediate storer arrangements 4 and are twisted
in the opposite direction. When the intermediate storer
arrangements 4 are filled to capacity with the new sections of
length of twisted units, the direction of rotation of said
intermediate storer arrangements is again reversed, so that such
new sections are also provided, during their runoff from the
intermediate storer arrangements, with an additional twist, in the
same direction, which is superimposed upon the preceding twist. In
this manner the twisted units or spiral quads are alternately
provided, in length sections, with two opposite twists of equal
magnitude.
After the twisted unit 10 is provided by an intermediate storer
arrangement 4, said twisted unit is supplied to a corresponding
longitudinal or length storer 16. Each length storer 16 comprises
two deflection rollers 17 and 18 positioned in sequence. The
individual twisted units are wound on the deflection rollers 17 and
18 at different rates. Therefore, each of the twisted units 10 has
a different path length in its extension from the corresponding
intermediate storer arrangement 4 to a guide nipple 19. This
results in the points of the individual twisted unit at which the
direction of twist alternates, being nonadjacent following the
twisting of the resultant twisted unit into the twisted, twisted
unit 23 . These points are mutually displaced.
After the five twisted units 10 are provided by the corresponding
length storers 16, they are supplied, via the guide nipple 19 which
combines them into the resultant twisted unit, to the additional
intermediate storer arrangement 22. The additional intermediate
storer arrangement 22 is the same as each of the intermediate
storer arrangements 4 and comprises the additional takeup reel 31,
an additional intermediate storer 32 and the additional payout reel
33. The additional intermediate storer arrangement rotates at a
speed in accordance with the twisting which is customary in
producing stranding or twisted, twisted units or modular bunches.
The additional intermediate storer arrangement 22 operates in the
same manner as each of the intermediate storer arrangements 4. The
twisted, twisted unit 23 is thus alternately provided in sections
of length with twists of the same magnitude in opposite
directions.
The twisted, twisted unit 23 is supplied to a central spinner 20
which functions to provide the SZ twisted, twisted unit with a
helical marker. The twisted, twisted unit 23 is then wound on a
takeoff disc 15 and a drum 21. The takeoff disc 15 rotates in
clockwise direction, as indicated by the arrow.
The speed of rotation of the takeoff disc 15 determines an equally
high supply and removal speed for the twisted units relative to the
intermediate storer arrangements 4. The supply and removal speeds
are determined in a manner whereby they are proportional to the
speed of rotation of the intermediate storer arrangements 4. Thus,
every variation in the speed of rotation of the intermediate storer
arrangements 4 and the additional storer arrangement 22 occurs at
the same instant. Furthermore, the speed of rotation of each
intermediate storer arrangement 4 and the additional intermediate
storer arrangement 22 has a constant relationship to the speed of
rotation of every other intermediate storer arrangement at any
instant. This enables each of the intermediate storer arrangements
4, the additional intermediate storer arrangement 22 and the
takeoff disc 15 to be driven by a drive unit 30' , essentially
similar to the drive unit 30 of FIG. 1. The drive unit 30' may
comprise any suitable driving arrangement, which may operate from a
single drive source, for driving the takeup reels, payout reels and
intermediate storers of the intermediate storer arrangements at the
desired speeds and for rotating the takeoff disc 15 at the desired
speed.
In actual operation of the apparatus of FIG. 2, we found it
expedient to select the length of a section of the twisted unit,
having the same direction of twist, as 20 meters. Each of the
intermediate storer arrangements 4 was rotated at an average speed
of 500 r.p.m. The additional intermediate storer arrangement 22 was
rotated at approximately 170 r.p.m. The twisted, twisted unit was
produced at the rate of approximately 50 meters-per-minute.
As shown in FIG. 3, the storer or storage disc 8 is tightly affixed
to a rotatable shaft 34. The section of length of the twisted unit
taken up by or supplied to the intermediate storer disc 8 must be
continuously displaced or shifted on the storage surface 11
thereof, as shown in FIGS. 4 and 5, in order to provide space for
the successively supplied sections of said twisted unit. A
deflector ring or tumbling deflector ring 7 is utilized to provide
such continuous displacement or shifting. The deflector ring 7, as
shown in FIGS. 3, 4, 6 and 7, is so positioned that it provides a
tumbling movement of the twisted unit 10 relative to the
intermediate storer disc 8. A specific distance must be provided
between the deflector ring 7 and the storage surface 11 of the
intermediate storer or storage disc 8, in order to enable said
deflector ring to tumble on said storage disc.
The tumbling or tumbling movement of the deflector ring 7 is
produced by a plurality of slider members 35, as shown in FIG. 3,
which are firmly affixed to a stationary carrier disc 36. The
carrier disc 36 is coaxially mounted around the shaft 34, but is
not affixed to said shaft and is not affected by rotation of said
shaft. The slider members 35 are of substantially U-shaped
cross-sectional configuration and engage the deflector ring 7, due
to the fact that the deflector ring is also of substantially
U-shaped cross-sectional configuration opening outward from the
storage surface 11, as shown in FIGS. 3 and 4. Corresponding arms
of the slider members 35 thus cooperate with the corresponding arm
of the deflector ring 7, as shown in FIG. 3, and are mutually
displaced in the axial direction of the shaft 34, which axial
direction is also that of the storer disc 8. Thus, upon rotation of
the storer disc about its axis, the deflector ring 7 moves back and
forth on the storage surface 11 of said storer disc, in axial
directions.
In order to prevent the twisted elements or cable elements 1 of the
twisted unit 10 such as, for example, the wires of a spiral quad,
from becoming clamped in the space between the deflector ring 7 and
the storage surface 11 of the intermediate storer disc 8, which
clamping could damage the insulation of said wires, said storage
surface 11 has a plurality of grooves 12 formed therein. The
grooves 12 extend in directions parallel to the axis C-D of the
intermediate storer disc 8 and are equidistantly spaced around the
storage surface 11. Each of the grooves 12 extends for at least
part of the altitude of the storage surface 11. The deflector ring
7 has a plurality of teeth 13 extending therefrom. The teeth 13 of
the deflector ring 7 are engaged in the grooves 12, which grip said
teeth. Thus, as shown in FIGS. 6 and 7, each of the teeth 13a, 13b,
13c, 13d, and so on, is engaged in a corresponding one of the
grooves 12a, 12b, 12c 12d, and so on.
The deflector ring 7 is thus affixed to the storage surface 11 of
the intermediate storer disc 8 in the manner of a comb, in the area
wherein the twisted unit is displaced or shifted by said deflector
ring. The stranded or cable elements of the twisted unit 10 are
thus prevented from being clamped between the deflector ring 7 and
the storage surface 11. The distance between next-adjacent grooves
12 is preferably equal to the width of a groove. This provides a
good bearing for the twisted unit on the storage surface 11 and a
good bearing of said twisted unit against the deflector ring. The
engagement of the teeth 13 in the grooves 12 prevents the
individual wires of the spiral quad or twisted unit from becoming
clamped between the deflector ring 7 and the storage surface 11 of
the storer disc 8. This, as hereinbefore described, prevents damage
to the insulation of the individual wires.
The tumbling deflector ring 7 may be mounted on the storer disc 8
by a plurality of slide members 37, as shown in FIG. 7. The slide
members 37, only one of which is shown in FIG. 7, are equidistantly
distributed around the periphery of the storer disc 8. The slide
members 37 are affixed to the storer disc 8 and extend therefrom,
beyond the storage surface 11 thereof. The slide members 37 provide
a concentric seat for the deflector ring 7 on the storer disc
8.
The teeth 13 of the deflector ring 7 do not contact the storer disc
8 in the grooves 12. It is possible to construct some of the teeth
as sliding members. Such teeth would , as the other teeth, extend
from the deflector ring 7 and would be engaged in corresponding
ones of the grooves 12.
While the invention has been described by means of specific
examples and in specific embodiments, we do not wish to be limited
thereto, for obvious modifications will occur to those skilled in
the art without departing from the spirit and scope of the
invention.
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