close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2134293

код для вставки
Oct. 25, 1938.
NV W> WEBB
2,134,293
WOVEN WIRE FABRIC FOR DANDY ROLLS, CYLINDER MOLDS,
IOR THE LIKE, FOR PAPER MAKING MACHINES
'
Filed June 4, 1936
'Ilm
~ , )UMa/M»
ATTORNEY
_
Patented Oct. 25, 1938
2,134,293
. UNITED e ,STAT-Es'
PATENT u0FHC1-‘1h ¢
Y i 2,134,293
WOVEN WIRE FABRIC FCR DANDY ROLLS,
CYLINDER MoLDs, on THE LIKE, non
PAPER MAKING MACHINES
Nelson W. Webb, Beueville, N. '.I., assignòr to
Eastwood-Nealley Corporation, Belleville, N. J.,
a corporation of New Jersey
Application June 4, 1936, Serial’nNo. 83,520
6 Claims.
The present invention relates to Woven Wire
fabric for dandy rolls, vcylinder molds, or the like,
for paper making machines, the invention resid
ing both in the arrangementI of the fabric as a
5 covering for such rolls, molds, or the like, and in
the seam structure for thisy covering. Dandy
rolls, cylinder molds, and the like, are practically
standardized in diameters, dandy rolls usually
having standardized diameters of 8", 10”, 12”,
14"', etc., >and cylinder molds usually having
standardized diameters of 30”, 36", 42", 48",
etc., but the length of these rolls and molds vary
considerably with the particular installations,"as
they must be used upon paper machines which
15 vary Widely in dilîerent Inills.
`
In the ordinary method of applying the cover
to these rolls and molds the Warp Wires of the
fabric were carried around the circumference and
the weft Wires ran parallel to the length of the
20 cylinder, so that in cutting the covering from, a
bolt of woven wirev fabric there was excessive
scrap because the variable length of fabric Was
out from the standardized width of the bolt. It
is proposed in the present invention to reverse
25 this procedure so that the weft wires of the fabric
will go around the standardized circumference
and warp wires will lie parallel _tov the length of.
the cylinder, and consequently the bolts of fabric
may be Woven so that the Width will correspond
30 to the standardized diameters of the cylinders,
thus reducing the scrap to a minimum.
'
It is further proposed to provide seam forming
Wires Woven into the fabric, as warp wires, at
suitable intervals corresponding to the'circum
35 ference of the cylinder, these seam forming Wires
being such that they may be readily soldered in
place, so that even though they are at the edge
_ of the fabric they will be strongly anchored for
the purpose of engaging the lacing` Wire there
(C1. 245`-`-10)
for the engagement of the lacing Wire, so that
a heavier lacing wire may be utilized without
projecting above the surface of the cylinder,`also
the knuckles Will have a morer solid and uniform
engagement With the circumferential supporting
Wires of the cylinder than heretofore.
Y
It is proposedlin Weaving in the seam forming
Wires to provide these Wires either as silver solder
covered wires,'the core of ‘which may be of bronze
or other suitable material, or as a pair of Wires,
one being an ordinary warp wirelandl the other
being a silver soldered wire. "In either case the
silver solder covering or the separate silver solder
Wire will be utilized for soldering the seam form
16
ing Wire to the ends of the weft Wires. »
With Èthe above -and other objects in‘view em- '
bodiments of my invention arev shown in the ac
companying drawing» and these embodiments Will
be hereinafter more fully described With Vrefer
ence thereto,` and the inventionwill be> finally 20
pointed out in the claims.
'
In the dravvingz--K-k
'
'
» ^
=
"
»
I
Fig. 1 is an enlarged plan-:view partially broken
'away of' a section of Woven Wire fabric accord
ing to the embodiment,`- the weft dimension vbeing 25
substantially equal to one circumference dimen
Sion of a cylinder tobe covered'by the fabric.
" F’ìg.` 2 is a similar view ofa section of Woven
Wire fabric, in which the weft dimension corre->
sponds lto aV plurality' of cylinder circumference 30
dimensions.
'
1
_
’
y
'
e
Fig. >3 is a side elevation, partiallybroken away,
of a dandy roll or cylinder moldv structure, the
woven Wire fabric covering being broken away to
show the cylindrical supporting wire structure
beneath it, and a portion of the cylinder support-ring wire structure being broken away to show
Fig. 4 is a sectional View along the 'line 4-4 v
of. Fig. 3.l
of special importance in the present arangement, -
fabric, according to the invention, prepared for
high knuckles of thek warp wires which have here
tofore been utilized to retain the seam forming
edge wires Will not be available in the present
50 arrangement, but the seam forming edge Wires
will be engaged by the relatively low knuckles of
the weft Wires. However, the arrangement of
the knuckles according 'to the present invention
is such that deeper depressions than with the
55 old >arrangement will be provided along the seam
se
the supporting frame structure thereof. '
with, ormay be utilized for producing a soldered
seam without the use of lacing wires. This is
because the crimping of the weft wires which will
lie transversely of the seam instead of parallel
to the seam as heretofore, is considerably less
than the crimping of the Warp wires, so that the
10
`
g
~
40
Fig. 5 is a plan view of a section of Awoven wire
covering the cylinder and -producing a seam by
means of a lacing wire.
y
'
v
'
Fig. 6 is a plan View showing the seam struc# 45
ture formed by means of a lacing- wire, portions
of the cylindrical Supporting Wires being shown
in relation thereto.
`
Fig. '7 is a sectional view in the Weft'wire direc
tion of the fabric covering, taken along the line 50
'1_1 of Fig. 6.' ’
.
Fig. 8_is a sectional view in the Warp Wire di
rection of. the fabric covering, taken along the
line 8-8 of Fig. 6.
kl5'ig.'9 isa planQvieW of a
"
modified form` of
55
2
2,134,293
seam structure, according to the invention, in
ized circumference cylinder are woven in one
which the two end warp wires are brazed to
piece of fabric, the silver solder covered Wire
I8 in this case being adjacent the extremity
of the fabric and also in pairs at the points sep
arating the sections, so that to cut the covering
sections therefrom the loop ends of the weft are
trimmed off and the sections are separated by
cutting across the weft wires between the pairs
gether.
'
Fig. 10 is a plan view of another modified form
of seam structure, in which a single end warp
wire is brazed between the overlapping ends of
the weft wires.
»
n
Fig. 11 is a plan View of a section of woven
of silver solder covered Warp wires. The sec
tions may be of equal width if they are for the 10
_ purpose of covering equal circumference cylin
sponding parts throughout'the several figures of ders, or they may be of different widths corre
Wire fabric, according to a modification of the
10 invention.
Similar reference characters indicate corre
the drawing.
sponding to different standardized circumfer"
_
Referring to the drawing and more particu
15 larly to Figs. 3 and 4, thereof, the dandy roll
or cylinder mold structure comprises a series of
circular frame members I IJ, mounted upon a
ences.
Referring to Figs. 5 to 8, in which I have illus
15
trated a lacedpseam, the woven wire fabric is
first prepared for'covering the cylinder by ap
shaft Il, these frame members having longi«
tudinally extending bars I2 secured to their peri
20 pheries and extending between-the end mem
bers I3--I3 of the cylinder, these bars being
provided with a series of grooves I4 in which is
engaged thespirally wound wire I5- forming the
cylindrical supporting surface upon which the
plying heat to` the silver solder covered end
Warp wires which thus become fused with the
weft wire ends as shown in Fig. 5. The fabric 20
25 woven wire fabric covering is engaged and sup
depressions produced along the edges of the 25
fabric by the relatively high knuckles of the
In practice dandy rolls are substantially small
er than cylinder molds but the constructions of
the tWo arev substantially similar in principle,
30 and it will be understood that the present in
Warp Wires and the transverse arrangement of
the relatively low knuckles of the weft wire ends
the lacing wire will ñt into these depressions and
extend across the'low knuckles of the weft wires 30
ported.
vention not only contemplates dandy rolls and
cylinder molds but anyy other cylindrical struc
ture in which a woven wire covering is adapted
to be supported upon a cylindrical’ support, or ln
85 which the woven wire covering'may be in the
form of a belt extending over a pair of spaced
the ends of the fabric are seamed together by
means of a lacing wire 2l. Due to the deep
without projecting above the surface of the fabric,
thereby permitting of the use of a much heavier
lacing wire than has heretofore been possible
in the lacing together of a seam in which the
weft wires of the fabric were parallel to the 35
axis of the cylinder.
~
Iny addition to the advantage of having the
rolls, as for instance a Fourdrinier wire.
As above pointed out, the practice heretofore
both in the arrangement of the covering of cyl
40 inders and in Fourdrinier wires, for paper mak~
ing machines, has been to have the warp wires
extend around the circumference of the cylin
der, and in the case of Fourdrinier wires around
the supporting rolls, While the weft` wires extend
45 parallel to the axis of the cylinder'or rolls. Ac
cording to the present invention the weft wires
I6 extend around the circumference of the cyl«
Wire Woven to standardized circumferences, the
invention also has the advantage of disposing the
high warp knuckles transversely of the axis of 40
the supporting wires I5 so that the covering will
engage more firmly and uniformly upon the sup
portingA wires. This is _clearly illustrated in Fig.
8, and it will be observed by comparing the cross
section of the covering in this ñgure with that of 45
the covering in Fig. '7, that if the weft wires were
inder or rolls and the warp wires I'I extend par.
disposed transversely of the axis of the support
ing wire the crowns of certain of the supporting
allel to the axis of the cylinder or rolls.
wires might be engaged by the high knuckles of
~
» ,
The diameters of the cylinders for which the
50
fabric is designed are standardized so that by
Weaving the fabric of a width corresponding'tc
the standardized circumference of the cylinder,
or in a width which is a multiple of this stand
55 ardized width so that it may be separated into
sections for use upon a plurality of cylinders, or
in widths which will correspond to the sum of
the circumferences of cylinders of different stand
ardized widths, the fabric thus woven may be
60 placed upon the cylinder without any loss due
to scrap. The lengths of the cylinder may vary,
but as this dimension will be cnt_frorn the bolt
of fabric in the Warp‘ direction there will be no
scrap due to this cutting. .
65
is then placed about the cylinder vwith the sol
dered end warp wires in adjacent relation, and
As shown in Fig. 1 a silver solder covered wire
I8, the core of which will preferably be of brass
or bronze alloy corresponding to the warp wires
is woven in as a warp wire adjacent each ex
tremity of the weft Wires. In preparing the cloth
70 for covering the cylinder the loop ends I9 and
the warp wire while the crowns of other of the 50
supporting wires might be engaged by the low
knuckle of the weft wires, with a consequent un
evenness in the surface andgin the support of
the covering.
.
In Fig. 9 I have illustrated a modified form of 55
seam produced by bringing the soldered covered
end warp wires I8 together prior to the applica
tion of heat, and applying heat with these wires
in abutting relation, whereby the two Wires be
come fused to each othery and to the ends of the 60
weft wires thus producing an all-brazed seam.
In Fig. 10 I have shown another modification
of the all-brazed seam in which one of the warp
wires atone end of the fabric is~removed and the
weft ends overlapped with the soldered covered 65
wire I8 in the other end of the fabric. In this
relation heat is applied and the single wire I8
becomes fused to the two ends of the fabric.
In Fig. 11 I have shown a modification of fabric 70
the edge selvage warp wires 20 will be trimmed
in which the solder is interwoven as a warp wire
off so that the silver solder covered wire will
be at the extremity of the fabric.
As shown in Fig. 2 a plurality of sections, each
in the form of thin silver solder wire 22 disposed
alongside of the warp wire 'adjacent the edge of
the cloth, and is adapted to be fused to the ends
of the weft wires by application of heat in a 75
of a width to form a covering for a standard
2,134,293
similar manner to the silver solder covered Warp
woven in said fabric and soldered to the weft
Wires I8.
wires.
-
I have illustrated and described preferred and
satisfactory embodiments of the invention, but it
will be obvious that changes may be made therein,
within the spirit and scope thereof, as deñned in
the appended claims.
Having thus described my invention what I
claim and desire to secure by Letters Patent is:
10
3
l. Loom woven wire fabric for use as a cylindri
cal sieve in paper making machines comprising
interwoven warp and weft wires, and seam form
ing wires loom woven into said fabric as warp '
wires in predetermined spaced relation deter
mined by a standardized circumference of cylin
der, and each comprising a wire of similar com
position to the other warp wires together with
solder contiguous to and simultaneously woven
with said seam forming wire adapted through the
application of heat to solder said seam forming
Wire to the weft wires, said warp wires adapted to
extend parallel to the axis of said cylindrical
sieve.
2. Loom woven wire fabric for use as a cylin-25 drical sieve in paper making machines compris
ing interwoven Warp and weft Wires, and seam
forming wires loom woven into said fabric as
'
4. In a dandy roll, cylindrical mold, or the like,
a cylindrical wire support, a loom Wovenl wire
covering therefor comprising interwoven warp
and weft wires, the warp wires extending parallel
to the axis of said cylindrical support and the weft
wires extending circumferentially thereof, and a
seam connecting the ends of the weft Wires to
gether comprising a warp wire together with sol
and soldered to the weft Wires.
5. Ina dandy roll, cylindrical mold, or the like
ka cylindrical wire support, `a loom Woven Wire
covering therefor comprising interwoven Warp 15k
and weft wires, the Warp wires'extending paral
lel to the axis of said cylindrical support and the
weft Wires extending circumferentially thereof,
and a seam connecting the ends of the weft wires ,
together comprising a pair of warp wiresv together 20
with solder contiguous thereto loom woven in
said fabric, one at each end of the'weft Wires,
and soldered to the weft wires, and a lacing wirev
laced about said soldered warp Wires.
6. In a dandy roll, cylindrical mold, or the 25
like, a cylindrical wire support, a loom woven wire
covering therefor comprising interwoven Warp
warp Wires in predetermined spaced relation de
and weft wires, the warp wires extending paral
termined by a standardized circumference of
lel to the axis of said cylindrical support and the
30 cylinder, and each comprising a solder covered
weft wires extending circumferentially thereof,
wire adapted through the application of heat to
be soldered to said weft wires.
and a seam connecting the ends of the weft wires
3. Loom woven Wire fabric for use in paper
making machines comprising interwoven Warp
35 and weft wires and a seam connecting the ends
of the fabric together and including a warp wire
together with solder contiguous thereto loom
10
der contiguous Vthereto loom woven in said fabric
30
together comprising a pair of warp Wires together
With solder contiguous thereto loom woven in
said fabric, one at each end of the weft Wires,
and soldered to the weft Wires and to each other. 35
NELSON ` W. WEBB.
Документ
Категория
Без категории
Просмотров
0
Размер файла
513 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа