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Патент USA US2106454

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Jan. 25, 1938.
2,106,454
P. F. FROST ET A1.
WIRE COILING AND INTERWEAVING MECHANISM
Filed Feb. 18, 1956
Ti
Fl|l|.lIl
INVENTOR .‘
arm’l
BY
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aff/demon
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Patented Jan. 25, 1938
2,106,454
UNITED STATES PATENT OFFICE
2,106,454
WIRE COILING AND INTERWEAVING
MIECHANISM
Parmenas F. Frost, Mount Vernon, N. Y., and
John C. Anderson, Keyport, N. `J.
Application February 18, 1936, Serial No. 64,426
10 Claims. (Cl. 140-8)
This invention relates to improvements in coil
the wire to be coiled. Due to the relative align
ing mechanism used in making and interweaving ment of the- edges cf the mandrel and the grooves
coiled wires in the manufacture of wire netting in the rotating sleeve, that portion of the wire
and more particularly to improvements in coiling extending through the groove of the die can fit
mechanism for making and interweaving coiled in the grooves of the sleeve, and since the mandrel
wire netting in which the coils are flattened.
and sleeve are rotated in synchronism, it follows
Heretofore many types of mechanisms have that the rotating grooves materially aid the
been used for the manufacture of flattened coiled mandrel in forcing the wire through the die. As
wire netting, but all of such mechanisms have the result of this cooperation between the mandrel
10 been so constructed as to present definite limita
and the sleeve, it is possible to increase the angu
tions as to the angularity of the coils, etc. In
other words, the mechanisms have been so con
structed that the maximum angle at which the
wires can be coiled has been approximately 45°.
When attempts have been made to increase the
angle to say 60°, the resultant friction set up in
the mechanism has been so great as to practically
prevent operation of the mechanism on any but
very small wire.
An object of the present invention is to pro
great angle. When the coiled wire is interwoven,
it follows that the distance between engaged loops
in one plane is considerably greater than the dis
tance between the engaged loops in the other
plane. To facilitate the introduction of the wire
into the spiral groove of the desired angularity,
either one of two expedientscan be used.
vide mechanism for coiling and interweaving wire
into netting of such construction that the angle at
which the wire is coiled can be considerably in
creased beyond that posslble in prior practice.
Another object of the invention is to provide in
mechanism of the foregoing character, an auxil
iary member moving in synchronism with the
customary mandrel for aiding said mandrel in
advancing wire through the die.
30
A further object of the invention is to pro
vide means for facilitating the introduction of
wire into a die groove of relatively wide angu
larity.
larity of the spiral groove in the die so that the
coiled wire has the turns thereof at a relatively
.
In one
form of the invention the die has the major por 20
tion thereof at the desired wide angle, while the
groove at the end of introduction of the wire is
of a different angularity more in keeping with
that ordinarily used in prior practice. This> modi
fied angularity of the groove exists for such Aa
distance ofl the groove as to introduce a loop of
the wire into a groove in the sleeve, after which
the die groove extends at the desired angularity,
In another form of the invention the mandrel is
provided with a twisted portion positioned at the 30
entry end of the die, which twisted portion serves
the same function as the> modified angularity of
die groove.
Another additional object of the invention is to
Other features, objects and advantages of the
' provide a forming die in which the groove is of
invention will become apparent by reference to
the following detailed description thereof read
in the light of the accompanying drawing, where
a relatively wide angularity throughout the major
portion of the length thereof and is of a diiïerent
angularity at the entrance thereof, to facilitate
introduction of the wire into the forming groove.
4.0
A still further object of the invention is to pro
vide a mandrel> for use in connection with a form
ing die having a forming groove of relatively wide
angularity, such mandrel having a portion there
of twisted adjacent the entry end of the groove to
facilitate the introduction of wire thereinto.
The mechanism. embodied in the preferred form
of the present invention comprises a spirally
grooved die held in stationary position by some
suitable clamp mechanism at the respective ends
thereof; a mandrel rotatable within the die; and
a sleeve encircling the major portion of the die
and arranged to rotate in synchronism with the
mandrel. rI‘he mandrel is in the form substan
tially of a flat blade; and the sleeve is provided
with diametrically opposite grooves extending
longitudinally thereof in alignment with the edges
of the mandrel. Suitable mechanism is provided
for rotating the mandrel and the sleeve in syn
chronism. The die preferably has a cylindrical
60 wall of slightly less thickness than the diameter of
1n
Fig. 1 is a side elevation, partially in section,
of mechanism embodying the invention.
40
Fig. 2 is an enlarged vertical section taken sub
stantially on the line 2-2 of Fig. 1.
Fig. 3 is an enlarged vertical section taken sub
stantially on the line 3_3 of Fig. 1.
Fig. 4 is a plan view of a twisted mandrel used 45
in one embodiment of the invention; and
Fig. 5 is an enlarged fragmentary showing of a
die used in the invention.
Referring now to the drawing, I0 indicates a
cylindrical or tubular die member which is pro 50
vided with a spiral groove II extending com
pletely lengthwise thereof and cut completely
through the wall of the die. The respective ends
of the die IU are clamped in supports I2 and I4
which may lextend upwardly from a suitable base
I5. Surrounding rings I2’ and I4’are secured
to the die by set screws.
55
The supports I2 and
I4 are in the form of split rings which can be
drawn together by a suitable nut and bolt ar
rangement I6 passing through upstanding ears 60
2
2,106,454:
the locking rings I2’ and I4', yet be capable of
mandrel, and since, as before pointed out, the
Wire looped around the edges of the mandrel is
of such size as to extend through the groove, the
loops extend into the grooves 2I as shown clearly
in Fig. 2. Thus, in addition to the normal ad
vancing action of the mandrel itself, a cumula
tive advancing action is afforded by the sleeve
which rotates in- synchronism with the mandrel.
rotation about the die.
Due to this coaction between the mandrel and
Il' to clamp the rings I2’ and I4’ and to thereby
lock the die against any movement. Any other
suitable locking arrangement can be used for
restraining the die from -any movement.
Fitting around the die I0 between the sup
ports I2 and I4 is a tubular sleeve 20. This
sleeve is of such length as to ñt closely between`
The inner surface of
10 the sleeve 20 is provided `with _diametrically op
posite longitudinally extending grooves 2l. The
purpose of these grooves will be explained later.
Secured to the sleeve is a cog wheel 22 around
which passes a chain belt 24, also passing over
15 a similar wheel 25 on a countershaft 26.
Spaced from the support I2 is a head 30 within
which is rotatably mounted a power shaft 3| in
the grooved sleeve, the friction which is set up 10
is substantially overcome so that the wire ad
vances as readily through the groove of the angu
larity shown as it will through a groove of sub
stantially 45° or less angularity.
'
The shape of the wire emerging from the form~
ing die is shown clearly in Fig. 1, wherein it will
be noted that the angle between two expanses
axial alignment with the die I0. Some suitable
source of power may be utilized for rotating the
20 shaft 3l. This shaft h-as one end thereof split
for the reception of one »end of a flat blade-like
mandrel 32, which mandrel can be locked in
place by means of a screw 34 in the customary
fashion. The end of the shaft 3| has a cog
of the wire is substantially 120°. When a wire
so coiled has been woven into netting, the loops
25 Wheel 35 thereon over which passes a chain belt
36, also passing over a similar cog wheel 31 on
netting can be used more advantageously for
fence purposes due to the restriction of the hori
zontal measurements of the mesh (it being under
stood that the wire is woven from top to bottom
of what is intended to be fence netting). Since
this horizontal measurement can be materially 30
reduced, it follows that a fence made of the wire
affords less chances for foot-holds th-an the
square mesh. Furthermore, with a given hori
zontal measurement of loops a saving in wire can
be effected by utilizing the wide angularity of '
the countershaft 36. By this arrangement it will
ÍIce-,evident that when the shaft 3l is rotated to
y„rptate the mandrel 32, which extends completely
.through and beyond the die I0, the sleeve 20 will
¿be rotated in synchronism with the mandrel.
-_;’In the assembly of the component parts of the
mechanism, the blade 32 is so introduced intofthe die and registered relative `to the sleeve 20
that the grooves 2l in the sleeve are in exact
alignment with the two edges 38 of the mandrel.
The wall thickness of the tubular die IIJ depends
on the size of the wire 50 to be coiled by the
mechanism. Preferably, the thickness of the
wall of the die Il! is slightly less than the diam~
îeter‘of the wire 50 so that when this wire is bent
,_aroundfthe mandrel 32, an edge of the wire will
„extend-:through the groove I I.
.ai _By¿._rei"erence tog¿the drawing, it will be seen
íthatgtheçgroove I _Igzis v¿so formed as to extend
.atanangle- cfwsubstantìalln~59° relative t0 a
Erlang:transversgoîfth@die? ret-.anengle 0f 30°
relative to a plane extending axially_9f,.¿the die.
when sffçnîtshave:been- made tefssae'ßëgeye 0f
'.SuChîsang’lllëLfÃWLDIÍìOFLIIÍïQ .tfhe pIÍeSent iinVçI-IÈ'IQQ’
f-itfhas «been vfOLlnEl--that; the -
of the netting will be found to be substantially 20
diamond shaped, being made up of twoî 120° an
gles and two 60° angles. Such netting possesses
many advantages over the ordinary square mesh
netting heretofore manufactured, in that the
the forming die groove.
In the event it is undesirable to have the groove
II of different angularities, a mandrel similar to
that shown in Fig. 4 can be used. When this
mandrel is used the groove may be of the same 40
angularity throughout the length of the die. The
mandrel 60 of Fig. 4 is provided with a twisted
portion 6I which can be so positioned that ap
proximately half of the twisted portion extends
beyond the entry end of the die. Thus when a
wire is fed over this mandrel and introduced into
the groove, the looping of the wire is accelerated
at the point of entry so that the wire assumes,
in effect, the shape it assumes in a groove of 45°
‘çàngularity
ì _
.,
The entrance of the wire into the
ye, is thereby facilitated.
While thejmandrel has been described as being
this ¿ausm-anw. »hast-bœufs@- great fe
11a
the passage along the groove of any wire,
.verr-ñne-Wirar
end port-ien. .5I f1tQfl».Shouleïzbeinoted.
the-¿F9951 Xœïlîlië“
however'
bladegwíththe sleeve having grooves therein
extending on
udinally thereof in register with
mandrel_„at the same time it
he blade can be slightly
f y.within the die,
-tiallyf atan angle of. ,452m @it
or axial plane ¿of 1 the' die.
illib'e Icorrespond
change: in _engula?trfeffthf~
ì
tate the introduction ¿of `lthrew» _ `
5.6.0
¿ing groovef-Sincér-the-f Wìrefwill»
..
¿
, „ „
„. .
groove. m0re;readi1y;_wh¢n 'the vg QQYQëIAQf t
.approaches aa-direçtionaßrgs
,y
¿anyactual twisting lof
1I?"WhÄCb-sWOtlïd‘fpml/ent .the .netting
. n andrei withinthedie is straight,
-`
fthe>
*is§§particularly"useiulf
mandrel isfasilbstant. _1ly;;ílat~.straish
y, _,
,_ .blade
`
_uchtwistingwithî
eing `sub'starx'vitially„flat` „When the ex,
'
When the wire 50, under.
elmorderfthat. the-,wire maybe adva
.fthe forminadie mare readily,
l(
'
drel-beyondthe-end of
e.
luseof- he rot ti ¿sleevefandthe advan
-
tmerein - have: been yset forth> par.
70
3
2,106,454
With opposite grooves in alignment with the edges »
of the mandrel, it is also contemplated that the
sleeve could have an uninterrupted inner surface,
and could be stationary relative to the die. When
the sleeve is stationary it is possible to use a die
having a .groove of an angularity somewhat in
excess of 45° provided some arrangement is used
for facilitating the introduction of the wire into
the die. Either one of the forms of devices de
10 scribed hereinbefore will serve this purpose, that
is, either the change in angularity at the entrance
end of the die, or the mandrel having a twist
therein at the entrance end of the die, will serve
to cause the proper introduction of the wire into
15 the portion of the groove of angularity in excess
of 45°. When the sleeve is stationary, it is essen
tial that the die have a Wall thickness slightly
less than the diameter of the wire being looped.
Moreover, the invention is adaptable for use in
20 arrangements wherein tWo strands of Wire are
simultaneously advanced through the same die,
the only requirement being that the grooves be
properly arranged for such purpose.
From the foregoing it will be seen that the pres
ent invention provides novel mechanism for pro
ducing looped wire netting in which the openings
are of substantially diamond-shape. Such wire
netting in addition to the uses and advantages
pointed out hereinbefore also has pleasing orna
mental effects. It is to be understood that the
invention is not to be limited to the illustrated
embodiments but is to be limited only by the scope
of the following claims.
We claim:
1. In mechanism for producing looped Wire net
ting, a tubular die having a spiral groove through
the wall thereof and extending longitudinally
thereof with at least the major portion thereof
at a pitch in excess of 45°, a mandrel extending
through said die, a tubular sleeve member fitting
around said die, and means at the entrance end
of said die for facilitating introduction of a wire
into the groove of the die.
2. In mechanism for producing looped wire net
45 ting, a tubular die having a spiral groove through
the wall thereof and extending longitudinally
thereof, a portion of the groove at the entrance
end of the die being at a different pitch from
that of the major portion thereof to facilitate
50 entry of a wire into the major portion, a mandrel
extending through said die, and a tubular sleeve
member fitting around said die.
3. In mechanism for producing looped wire net
ting, a tubular die having a spiral groove through
55 the wall thereof and extending longitudinally
thereof with at least the major portion thereof
at a pitch in excess of 45°, a mandrelv extending
through said die, and a tubular sleeve member
fitting around said die, said mandrel having a
60 portion thereof at the entrance end of the die
twisted to facilitate the introduction of a wire into
the groove of the die.
4. In mechanism for producing looped wire
netting, a tubular die having a spiral groove
5. In mechanism for producing -looped wire
netting, a tubular die having a groove through
the wall thereof and extending spirally longitudi
nally thereof, a substantially nat blade-like man
drel extending through said die, a tubular sleeve
surrounding the major portion of said die, the
inner surface of said sleeve being provided With
longitudinal grooves aligned with the edges of
said mandrel, and means for rotating said man
drel and said sleeve in synchronism.
6. In mechanism for producing looped wire
netting, a tubular die having a groove through
the wall thereof and extending'spirally longitudi
nally thereof, said .groove having an angularity
relative to a plane cross-axially of said die greater 15
than 45° throughout the major portion of the
length thereof, and having an angularity not
greater than 45° at one end thereof, a substan
tially flat blade-like mandrel extending through
said die, a tubular sleeve surrounding the major 20
portion of said die, the inner surface of said sleeve
being provided with grooves aligned with the
edges of said mandrel, and means for rotating
said mandrel and said sleeve in synchronism.
’7. In mechanism for producing looped wire 25
netting, a tubular die having a groove through
the wall thereof and extending spirally longitudi
nally thereof, said groove having an angularity
relative to a cross-axial plane of said diel in
excess of 45°, a substantially flat blade-like man
said die and being provided with longitudinally
extending grooves on the inner surface thereof,
70 and means for rotating said mandrel and sleeve
in synchronism.
30V
drel extending through said die, said mandrel
having a twisted portion adjacent the entry end
of said die, a tubular sleeve surrounding the
major portion of said die, the inner surface of
said sleeve being provided with grooves in align 35
ment with the edges of the mandrel, and means
for rotating said mandrel and sleeve in synchro
msm.
8. In mechanism for producing looped wire
netting, a tubular die having a spiral groove 40
through the wall thereof and extending longitudi
nally thereof with at least the major portion at
a pitch in excess of 45°, a mandrel extending
through said die, a tubular'sleeve member fitting
around said die, and means for rotating said 45
mandrel and sleeve in synchronism.
9. In mechanism for producing looped wire
netting, a tubular die having a groove through
the wall thereof and extending spirally longitudi
nally thereof with at least the major portion
thereof at a pitch in excess of 45°, a substantially
flat blade-like mandrel extending through said
die, a tubular sleeve surrounding the major por
tion of said die, the inner surface of said sleeve
being provided with longitudinal grooves aligned 55
with the edges of said mandrel, and means for
rotating said mandrel and said sleeve in syn
chronism.
l0. In mechanism for producing looped wire
netting, a tubular die having a spiral groove 60
through the wall thereof and extending longi
tudinally thereof with at least the major portion
thereof at a pitch in excess of 45°, a mandrel
extending through said die, a tubular sleeve mem
through the wall thereof and extending longitu~ ' ber ñtting around said die and being provided
dinally thereof, a mandrel extending through` with longitudinally extending grooves on the in
said die, a tubular sleeve member fitting around
10
ner surface thereof, and means for rotating said
mandrel and sleeve in synchronism.
PARMENAS F. FROST.
JOHN C. ANDERSON.l
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