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Патент USA US2411291

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Nov. 19, 1946.
E. L. RAMSTEDT
2,411,291
ADJUSTABLE DIE
Filed May 1, 1945
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2 Sheets-Sheet 2
Patented Nov. 19, 1946
2,411,291
UNITED'STATES PATENT OFFICE
Y
2,411,291
ADJUSTABLE Din
Emil L. Ramstedt, New Haven, Conn., assignor to
The American Steel and Wire Company of New
Jersey, a corporation of New _Jersey
Application May 1, 1945, Serial No. 591,391
6 Claims.
1
The present invention relates to wire rope or
cable laying machines, and particularly to im~
provements in the guide die for the center strand
or core of a rope or cable to be formed on such
machines.
On certain known types of ropes or cables, it
is necessary to provide a center strand or core of
substantially triangular cross--sectional contour.
(C1. 57-138)
2
wire or core adapted to be guided by the die
of the present invention.
Referring more particularly to the drawings,
reference numerals I8 represent disc-like mem
bers of a conventional form of a rope or cable
laying flier, this nier being rotatably supported
in a manner Well known to those skilled in the
art. The fiier includes a plurality or” cradles I2
Heretofore in the guiding of such a triangular
strand or core, it has been the practice to employ
a guide die having a triangular bore or passage
mounted by suitable trunnions journaled `in the
disc-like members lo. Each cradle l2 carries
Way extending therethrough, this bore usually
having been formed by a broaching operation.
According to prior practice a separate guide die
strand material l5. The several disc-like mem
bers lû are secured to an elongated hollow tubu
lar member i8 a portion of which extends through
a suitable bearing (not shown) in which it is
must be used for guiding each size of strand or
core. This necessitates the provision of a great
number of dies. Since they are usually made
from high-grade tool steel which is hardened
and polished and which must be carefully ini
tially broached, their initial cost is thus very
high and they are also costly to maintain.
Among the disadvantages inherent in prior art
guide dies are: the tendency of a bent core wire
to cause a break; the tendency toward breakage
on the introduction of an oversized core wire;
the tendency of the die to wear out rapidly; the
excessive original cost of producing the dies; the
tendency of worn dies to objectionably shave the
wire core; the tendency of the die to overheat;
and the tendency to mutilate the apexes of the
triangular core.
`
Among the objects of the present invention are
to overcome the above and related disadvantages
of prior practice and to provide a simplified
core guiding die comprising a holder having a
plurality of steel balls mounted therein with pro
vision for radial adjustment, the balls being
adapted to jointly denne a die opening’to suit
the contour of various sizes of wires or cores. -
The above and related features of the inven
tion will be fully apparent from the following
detailed disclosure when read in connection with
the accompanying drawings and the appended
claims.
In the drawings:
a reel Ell carrying a supply of rope or cable
rotatably mounted. At its forward end the mem
ber i8 carries a known form of lay plate 22
through which the several strand elements l5
converge toward a rotary stranding die 24 of
conventional form.
A countershaft 26 mounted in suitable bearings
28 is driven by a suitable main drive motor (not
shown).
This shaft drives the hollow member
i8 through conventional transmission elements
(not shown), thus providing a drive for the flier.
The rotary stranding die 24 is driven by a belt
4i? from pulley 42 carried on a stub shaft 44
driven by change gearing 45 from a gear 48 se
cured to the countershaft 26. A pair of haul
cii drums 5t and 52 of conventional form are
provided to draw the rope or cable through the
machine, the drum 52 being mounted on a shaft
carrying a gear 54 driven by a pinion 5t secured
to a shaft 58 driven through reversing gearing 60
and change gears {i2-64 from the countershaft.
The shaft 58 carries a pulley 5E which through
belt @il drives pulley 'lil carried by shaft 'l2 which
is connected by gearing 14 to a shaft T6 which
carries a take-up drum i8 on which is accumu
40 lated the product of the machine.
Extending longitudinally through the center of
or cable laying machine having my invention in
the hollow flier member I8 and rotatable rela
tively thereto is an elongated hollow shaft 80
which is adapted to be driven in a direction op~
posite to the direction of rotation of the llier.
A cradle (not shown) rotatablyvsupports a. suit
able reel which carries a supply of triangular wire
corporated therein.
or core strand such as indicated at |08.
Figure 1 is a plan view of a portion of a rope
~
"
This
Figure 2 is an enlarged axial section through 50 `core strand passes longitudinally through the
hollow center of the shaft 30. As the flier ro
the guide die constituting the chief feature of
tates, the plurality of strands I 6 is laid around
the present invention.
the triangular core m8 which is rotated at a
Figure 3 is a transverse section on line III~III
speed to suit the lay of the rope or cable being
of Figure 2.
laid up by the machine.
Figure 4 is a perspective view of a triangular
A particular feature of the present invention
l
2,411,291
relates to the simple and improved inexpensive
4
skilled in the art will appreciate that the inven
guide bearing for the triangular core |08 which is
tion is a definite step forward over prior conven
holder portion Il?- having a circular passageway
||4 extending therethrough. "The holder is pro
vided with an enlargement or collar portion H3
the appended claims.
tional practice.
effective to impart a twist to the core in a direc
Having thus described the invention, what I
tion to suit the lay of the rope being formed.
desire
to secure by Letters Patent is defined in
CR
As shown in Figure 2, the guide die includes a
I claim:
l. A rope or cable laying machine of the char
acter described, comprising a core guide die in
carrying end projections H8 which interñt with
notches |20 formed in the extremity of a sleeve 10k cluding a holder having a plurality of holes whose
axes converge to a common point, and a respec
|22 which telescopically engages the end of the
tive
ball mounted in each hole with provision for
bore of the hollow shaft 80, the sleeve |22 being
radial adjustment, the said balls jointly defining
detachably secured to the shaft by a set screw
an opening adapted to form a guide for different
|24. An internally threaded coupling nut I 26
sizes of core strand.v
15
engages threads formed on the extremity of the
2; A rope'or cable laying machine of the char
sleeve |22 and coacts with the collar IIB on the
acter described, comprising a core guide die in
holder ||2 to thus detachably secure the .guide
cluding a holder, a, plurality of holes whose axes
die to the sleeve |22. The entrance end of the
converge to a common point, a, respective ball
holder ||2 is flared outwardly, as indicatedrat
|28, to facilitate initially threading the core 20 occupying each radial hole formed in the holder,
and means for adjusting each ball radially'in the
through the die. A plurality of radial holes |30
hole
it occupies to suit differentY sizes of core
are formed in the holder ||2, with the axis of
strand.
each substantially perpendicular to the »longitudi
3. In a machine of the class described, a guide
nal axis ofthe die passageway H4. The outer
portions of the holes |30 are provided with re 25 die comprising a holder having three equidistant
circularly spaced holes therein, a respective ball
spective screw threads |32, and there is a re
in each of said holes, and respective means for
spectively lhardened steel ball |34 in each hole
adjusting each ball radially within the hole it
|35. Balls of various sizes, such as those of hard
occupies to suit different sizes of substantially
ened'tool steel forming conventional ball bear
triangular
core strand.
'~
'
ings, are satisfactory and economical. Outward 30
4. A guide die comprising a holder "having a
movement of the balls |35 is prevented by screw
longitudinally extending passageway, a plurality
plugs |36 which have socket portions |38 formed
of radial holes whose axes intersect at a common
therein for engagement with 9, suitable adjusting
point on the longitudinal axis of said passageway,
wrench |49. Each plug |36 is preferably formed
with a shallow conical depression |42 forming a 35 a respective ball within each of said holes, the
several balls jointly deiìning a curvilinear die
self-centering seat for the ball coacting there
opening, and means engaging said balls for ad
with. In'the embodiment illustrated, the holder
justine'
them radially within said holes to suit
||2 is formed _with three radial holes |30 circu
different sizes of cores.
`
larly arranged and equidistantly spaced with a
5. A guide die comprising a holder having a
respective ball in each hole. The screw plugs
passageway . extending longitudinally thereof,
|36 constitute means for adjusting the position
three
equiangularly spaced holes whose axes in
of the balls radially within the holes, thus mak
tersect the longitudinal axis of said passageway,
ing it possible for a given die equipped with three
a respective hardened steel ball within each hole,
identical balls to be used for guiding different
the balls thus jointly defining a substantially
sizes of substantially triangular wire or core such
Atriangular
guide openingl and plugs adjustable
as shown in detail in Figure 4. By simply ad
relatively to the holder and having seats engag
justing the screw plugs |35, the size of the sub
ing the balls t0 position them for coaction with
stantially triangular guide opening jointly formed
different sizes of triangular core strands.
by the three balls can be easily and quickly var
6. A guide die comprising a holder having a
ied to suit the size or gauge of triangular core .
wire used for different sizestof ropes or cables.
Thus my improved die overcomes the objections
to prior art dies, and in addition, practice dem
onstrates that a minimum number of dies will
cover the entire range of sizes usually required
by manufacturers of ñattened strand or rope.
When the balls |34 become worn after long use,
they can be inexpensively replaced, and in orderk
to make such Vreplacement it will be unnecessary
passageway extending longitudinally thereof,
three equiangularly spaced holes whose axes in
tersect the longitudinal axis of said passageway,
a respective hardened steel ball within each hole,
the balls thus jointly defining a substantially
triangular guide opening, the outer portions of
each of said holes being formed with internal
screw> threads, and screw plugs engaging said'
threads and having recessed seats engaging said
balls, said plugs being adapted to adjust the balls
>to remove the wire in process from the die. Nor 60
radially to suit diiîerent sizes of triangular Core
will it be necessary to cut the core wire. And
because the balls are universally rotatable, wear
is distributed and heat due to friction is greatly
minimized or practically eliminated. Thus those
strands.
'
EMIL L. RAMs'rED'r.
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