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Патент USA US3100524

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Aug. 13,1963
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A. P. JOHNSTON
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Filed June 25, less
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3,100,519
‘WIRE STRAIGHTENING APPARATUS:
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INVENTOR.
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Patented Aug. l3, 1963
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3,100,519
FIGURE 3 is a vertical sectional View taken along
line 3—3 of FIGURE 1;
FIGURE 4 is an enlarged perspective view showing a
wire engaging roller and its support means utilized in
said apparatus; and
FIGURE 5 is a schematic view illustrating the path
WIRE STRAIGHTENING APPARATUS
Archibald P. Johnston, 1845 E. 57th St.,
Los Angeles 5, Calif.
Filed June 23, 1958, Ser. No. 743,799
3 Claims. (Cl. 153-94)
of a wire being straightened through said apparatus dur
ing a wire straightening operation.
apparatus for straightening elongated objects such as
Referring to the drawings and particularly FIGURES
wires, rods or tubes.
10 1 through 5 thereof, there is shown a wire straightening
There have been heretofore proposed devices capable
apparatus embodying the present invention. This ap
of straightening metallic wires or the like. These de—
paratus broadly includes a cage C which is adapted to
vices generally include a series of rotary dies or rollers
be rotated about its longitudinal axis, as by means of pul
eccentrically arranged in a single plane within a cage
leys ‘29. The wire to be straightened W is urged through
or housing. The cage or housing is rotated about an 15 the cage C in a direction substantially coinciding with
axis of rotation which substantially coincides with the
the axis of rotation of the cage. The cage C supports a
direction of feeding movement of a wire to be straight
plurality of wire-engaging means, such as rollers R. The
ened through the cage. As the cage is rotated the wire is
radially inwardly disposed peripheries of the rollers R
urged therethrough with the dies or rollers effecting
extend in radial direction relative to the cage C adjust
straightening of the wire. {In certain of these heretofore
ably toward, to and beyond the latter’s axis of rotation
The present invention relates to a novel and improved
proposed devices, the dies or rollers are tilted relative to
the axis 'of rotation so as to provide automatic feeding
so as to eifect de?ection of the wire out of a line corre
during the straightening operation. Where the wire is
through the cage.
sponding to the axis of rotation of the cage. The axis
of the wire through the cage. The primary disadvantage
of rotation of each of the rollers R is offset from the
of these heretofore-proposed devices lies in their tendency
axis of rotation of the cage C whereby the engagement
to score the surface of the wire being straightened. Addi 25 between the rollers and the wire W will automatically
tionally, most of these devices cause the wire to be twisted
provide the motion of lineal translation of the wire
considerably twisted as it is straightened, the likelihood
‘More particularly, as indicated by the directional ar
exists that operating personnel may be injured should a
rows in FIGURES 1, 2 and 5, the wire W moves from
discontinuity occur in the wire as it is being moved 30 left to right through the cage C. The cage C includes
through the straightening device.
an entrance disc 24 and an exit disc 25 from which inte
It is a primary object of the present invention to pro
vide wire straightening apparatus which eliminates the
disadvantages provided by heretofore-proposed Wire
straightening devices.
Another object is to provide wire straightening appa
grally extend hubs 26 and 27, respectively. The hubs are
journaled on a suitable frame (not shown) in a conven
tional manner. The aforementioned pulleys 20 are af
?xed to the exit hub 25. A plurality (such as three)
longitudinally extending, identical support bars 28, 28a
ratus which affords automatic feeding of the wire to be
straightened.
and 28b rigidly extend between the discs 24 and 25. Each
of the support arms 28, 23a and 2812 are attached to
A further object is to provide wire straightening ap
the radially outer portion of a plurality of radially ex
paratus which will provide a wire of maximum straight 40 tending, roller-carrying arms, generally designated 30.
ness and minimum surface scoring.
The radially inner portions of each of these roller-carry
Yet another object is to provide wire straightening ap~
ing arms 30 is ‘formed with an internally threaded bore
paratus that is simple of design and rugged of construc
32. Each of these bores 32 receives the externally
tion whereby it may afford a long ‘and useful service life.
threaded mounting shaft 34 of one of the rollers R, each
A further object of the invention is to provide wire 45 roller R being rotatable relative to its mounting shaft 34.
straightening apparatus which is more economical of con
struction, maintenance and operation than heretofore
proposed devices of this nature.
A more particular object of the invention is to provide
wire straightening apparatus having a cage rotatable
about its longitudinal axis, with a wire to be straightened
extending through the cage in a direction substantially
coinciding with the axis of rotation of the cage. The
cage supports a minimum of three sets of longitudinally
The axis of rotation of each of the rollers R lies in a
plane which is substantially parallel with the axis of ro
tation of the cage ‘C, but disposed at an angle alpha rela
tive thereto. 'It has been determined that the angle alpha
between the axis of rotation of each of the rollers R and
the axis of rotation of the cage C should be approximate
ly the same. ‘In practice, an angle alpha of approxi
mately 45 degrees has proven satisfactory.
The intermediate portion of each of the support arms
3d is vformed ‘with a radially extending slot dill‘. This slot
disposed in an individual plane extending radially out
(it) receives a mounting bolt assembly 42 that secures the
wardly from the axis of rotation of the cage.
support arm 30 to its respective support bar Zil, 23a or 2%.
Another important object of the present invention is
The mounting bolt assembly 42 may be loosened so as
to provide wire straightening apparatus so constructed
to permit movement of the arms 32 radially inwardly and
that the wire-engaging members may be disposed at a min 60 out-wardly relative to its support bar. Each arm 36 may ‘be
imum longitudinal spacing. This arrangement permits
locked in a desired position by means of a radially extend
the straightening operation to take place along a min
ing adjustment bolt 44 which is carried by a mounting
imum length of the wire so as to provide maximum wire
block 46 formed on one side of the arm {it}. As will be
aligned and spaced wire-engaging members, each set being
straightening e?iciency.
These and other objects and advantages of the present
invention will become apparent from the following de
tailed description when taken in conjunction with the ap
pended drawings wherein:
FIGURE 1 is a side elevational view showing wire
/
apparent by reference to ‘FIGURE 3, the radially inner
‘end of each adjustment bolt 44 abuts the radially inner
surface 48 of its respective support arm. Preferably, the
support bars 23, 28a and 28b ‘are displaced 120 degrees
apart relative to the discs 24 and 25.
With this arrange
crnent, the rollers R are displaced 120 degrees circumfer
straightening apparatus embodying the present invention; 70 entially consecutively relative to the axis of rotation of
FIGURE 2 is a horizontal sectional view taken along
the cage C. This spacing is essential to proper operation
line 2-2 of FIGURE 1;
x
of the ?rst form of wire straightening apparatus.
3,100,519
3
In the operation of the ?rst ‘form of wire straightening
apparatus embodying the present invention, the wire to
be straightened is threaded through the cage C in the
plurality of longitudinally aligned and spaced elements
manner indicated in FIGURES 1, 2 and 5.
As noted
members whereby the latter are displaced circumferentially
previously hereinbefore, the radially inwardly disposed pe
and longitudinally consecutively relative to the axis of ro
tation of said cage and define a spiral path about said axis,
the radially inner extremities of said wire-engaging and
ripheries of each of the rollers R extend in a radial direc
tion relative to the cage C adjustably toward, to and be
yond the latter’s axis of rotation so as to effect de?ection
of the wire W out of ‘a line corresponding to the axis of
secured to said cage; means connecting each of said carry
ing members with one of said wire-engaging and de?ecting
de?ecting members exerting compressive pressure upon
said wire so as to de?ect said wire out of a line corre
rotation of the cage C. Accordingly, the periphery of 10 sponding to' the axis of rotation of said cage as such cage
is rotated; and adjustment means interposed between each
the rollers R will exert ‘a radially inwardly directed force
of said wire-engaging and de?ecting ‘members and said
upon the wire W. As the cage C is rotated, the Wire W
cage to adjust the distance between the wire-engaging sur
will not only be straightened by this compressive pressure
faces of said members and the axis of rotation of said
of the rollers upon the surface of the wire, but additional
ly since the axis of rotation of each of the rollers R lies 15 cage along ‘a radially extending path relative to said cage.
2. Wire straightening apparatus, comprising: a cage
in a plane which is disposed at an angle relative to the
axisof rotation of the cage, the engagement of the rollers
rotatable ‘about its longitudinal axis with a wire to be
with the wire will automatically provide the motion of
lineal translation of the wire through the cage, i.e. the wire
straightened extending through said cage in a direction
substantially corresponding to the axis of rotation of said
cage; a plurality of wire-engaging and de?ecting rollers in
W will be automatically fed through the cage C at a lineal
speed which is proportional to the rate ‘of rotation of the
cage. The contact between the periphery of the rollers R
‘and the surface of the wire W is a substantially true
said cage; a minimum of three sets of carrying members
' for said rollers, each displaced circumferentially 120 de—
grees and each set including a plurality of longitudinally
rolling motion ‘following a generally helical path because
aligned and spaced elements secured to said cage; ‘and
of the aforementioned relative displacement of the rollers 25 means rotatably connecting each of said carrying mem
R ‘120 degrees circumferentially consecutively relative to
bers with one of said rollers whereby the latter are dis
placed circurnferentially and longitudinally consecutively
the axis of rotation of the cage C. The surface of the
wire is accordingly not subject to being crushed, twisted or
scratched by its engagement with the roller peripheries.
relative to the axis of rotation of :said cage to de?ne a
As a corollary, the rollers do not tend to impart rotation
of said rollers exerting compressive pressure upon said
to the wire W, nor is any appreciable frictional heat gen
Wire so as to de?ect said Wire out of a line corresponding
erated between the rollers and the wire.
Hence, the
aforedescribed wire straightening apparatus will provide
‘a wire ‘of maximum straightness and minimum surface
scoring.
It should be particularly observed that the radially
spiral path about said axis, the radially inner peripheries
to the axis of rotation of said cage with the axis of rota
tion of said rollers being offset ‘from the axis of rotation
of said cage whereby rotation of said cage will effect auto
matic feeding of said wire through said cage with said
‘wire being concurrently straightened.
3. Wire straightening apparatus as set forth in claim
dially outwardly of the wire-engaging surface of its re
2 wherein the axes of rotation of the rollers carried by
spective roller R. This arrangement is important since
each set of longitudinally aligned rollercarrying mem
it permits the longitudinal spacing of the rollers to be 40 bers lie in a plane substantially parallel with the axis of
comparatively close. Thus, the length of the wire W
rotation of said cage but disposed at a substantially com
being subjected to a straightening ‘action may be kept to
mon angle relative thereto.
.
4. Wire straightening apparatus as set forth in claim
‘a minimum with respect to the diameter of such Wire.
3 wherein said common angle approximates 45 degrees
In this manner, the most e?icient wire straightening opera
when taken between the line extending through the angle
tion is made possible.
‘It should be observed that ‘although the drawings show
of rotation of said rollers and ‘a line extending from the
each of the rollers as extending radially inwardly relative
entrance to the exit side 1of said cage and corresponding
to the cage beyond the axis of rotation of the latter, it
to the axis of rotation of said cage.
may be desirable under certain circumstances to position
5. Wire straightening apparatus, comprising: a cage
certain of the rollers ‘approximately even with this axis.
rotatable about its longitudinal axis with a wire to be '
straightened extending through said cage in a direction
In this situation such rollers would serve primarily to
center or ‘guide the wire being straightened relative to
substantially corresponding to the axis of rotation :of
said cage; a plurality of wire-engaging and de?ecting
the de?ecting rollers.
It will be apparent from the foregoing description that
rollers in said cage; a minimum of three sets of carrying
' inner end of each of the support arms 30 terminates ra
wire straightening apparatus embodying the present inven
tion is of simple, compact and economical construction.
The amount of de?ection imparted to the wire to be
straightened may be accurately controlled. Additionally,
the power requirements to rotate the cage may be kept
to a minimum. 'Both forms of wire straightening appara
tus provide a wire of maximum straightness with minimum
surface scratching.
members for said rollers, each displaced circumferentially
12.0 degrees and each set including a plurality of longi
tudinally aligned and spaced elements secured to said
cage; and means rotatably connecting each of said carry
ing members with one of said rollers whereby the latter
are displaced circumferentially and longitudinally con
secutively relative to the axis of rotation of said cage
and de?ne a spiral path about said axis, the radially inner
peripheries of said rollers exerting compressive pressure
Various modi?cations and changes may be made with
respect to the foregoing detailed description without de
upon said wire so as to de?ect said wire ‘out of a line
corresponding to the axis of rotation of said cage, with
parting from the spirit of the invention or the scope of
65 the radially inner end of each roller-carrying member
the following claims.
terminating radially outwardly of the radially inward
I claim:
peripheral extremity of its respective roller relative to
1. Wire straightening apparatus, comprising: a cage ro
tatable about its longitudinal axis with a wire to be
said cage.
straightened extending through said cage in a direction
substantially corresponding to the axis of rotation of said
cage; a plurality of wire-engaging and de?ecting members
in said cage; a minimum of three sets of carrying members
6. Wire straightening apparatus as set forth in claim
5 wherein the axes of rotation of said rollers are offset
from the axis ‘of rotation of said cage whereby rotation of
said cage will effect automatic feeding of said wire
for said wire-engaging and de?ecting members each dis
placed circumferentially 120 degrees, each set including a
straightened.
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through said cage with said wire being concurrently
3,100,519
5
7. Apparatus as set forth in claim 6 wherein the axes
of rotation of the rollers carried by each set of longitu
dinally aligned roller-carrying members lie in a plane
substantially parallel with the axis of rotation of said
cage but disposed at a substantially common angle relative
thereto.
8. Apparatus as set forth in claim 7 wherein said com
6
References Cited in the ?le of this patent
UNITED STATES PATENTS
456,883
585,720
613,754
1,128,223
mon angle approximates 45 degrees when taken between
1,229,981
a line extending through the angle of rotation of said
1,400,764
rollers and a line extending from the entrance to the 10 1,859,851
exit side of said cage and corresponding to the axis of.
2,228,390
rotation of said cage.
Brightman ___________ __. July 28, 1891
Teetor _______________ __ July 6, 1897
Brightman ___________ __ Nov. 8, 1898
‘
Burgher ______________ __ Feb. 9, 1915
Lehmann ____________ __ June ‘12, 1917
Ollard ______________ __ Dec. 20, 1921
Stiefel ______________ __ May 24, 1932
Heller _______________ -_ Jan. 14, 1941
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