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Патент USA US2137789

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Nov. 22, 1938.
w. J. TAYLOR
_
2,137,789
WIRE FABRIC SEAM AND METHOD OF MAKING SAME
Filed Aug. 26, 1937
INVENTOF!
ATTORNEY$
Patented Nov. 22, 1938
2,137,789‘
UNITED STATES
PATENT OFFICE
2,137,789
WIREFABRIC SEAM AND METHOD OF BIAK
ING SAME
William J. Taylor, Nutley, N. J.
. Application August 26, 1937, Serial No. 161,124
5 Claims.
This invention relates to an improved method
of joining together pieces of woven metallic wire
and more particularly to improved methods of
joining wire fabrics to be used as endless webs
‘ in paper making machines of the Fourdrinier
type.
.
Heretofore, in the seaming or joining together
of pieces of metallic fabric for use in the so-called
Fourdrinier paper making machine wherein pulp
is caught on an endless web and formed into
paper, it has been difficult to produce a seam hav
ing the proper qualities of wear, strength, and
porosity. It is believed that these de?ciencies of
the seams produced according to processes here
(Cl. 245-10) ‘
rially or substantially different from the re
mainder of the fabric,‘ that is to say, the seam
produced in accordance with the present inven
tion does not substantially affect the porosity of
the web noralter its strength, ?exibility ‘nor 6
wearing qualities.
It is a further object of the present invention
to provide means whereby wire fabrics of the
type indicated can be seamed or joined together
by means both economical from the standpoint 10
of labor and of material. The process according
to the present invention does not necessitate the
use of skilled labor nor complicated machinery to
effect a seam in the fabric.
The portion of the
15. tofore known are due at least in part to improper
fabric wherein the seam lies is of substantially
alignment of the fabric elements at the place
where the seam. is made. For example, in the
process according to the Webb patent, #2,030,616
issued Feb. 11, 1936, the ends of the warp Wires
~20 are cut at a place at least not beyond the face of
a weft wire, the seam being made by removing
the outermost weft wire‘, replacing it by a solder
covered wire and joining the ends of thefabric so
the same strength as the remainder of the web.
The invention will be fully and comprehensively
understood from‘a consideration of the following
detailed description when read in connection with
the accompanying drawing which forms part of 20
the application.
In the drawing:
'
ments. Inasmuch as the usual wire fabric is of
an 80 mesh, the elements are approximately .0065
of an inch in diameter, and accordingly it is diiii
Fig. 1- is a top plan view illustrating two pieces
of wire fabric joined together in accordance with
the present invention.
25
Fig. 2 is a vertical sectional detail view of Fig. 1
taken along the line 2-y-2.
Figs. 3, 4:, and 5 are side views, partially in
section, illustrating certain features of the present
Si) cult to properly align the warp wires particularly
when their ends are cut as short as in the process
invention.
30
Fig. 6 is a top plan view showing sections of
prepared by soldering the abutting wire edges.
Notable among the disadvantages of this process
is the difficulty of properly aligning the wire ele
according to the patent aforesaid. Another diffi
culty encountered in following the teachings of
the Webb patent is the tendency of the fabric
I elements to alter'their relative position due to
expansion and contraction during the soldering
operation wherein the temperature often reaches
as high as 1300° F. ‘ Improper alignment of the
wire ends or movement of their relative position
results in so-called high or low spots in the fabric
due to buckling of the elements and accordingly
the fabric is worn down ?rst at the point where
the buckling takes place thereby substantially
decreasing the useful life of the seamed fabric
because of cracking‘or breaking at the place of
scam. It is an object of the present invention to
provide a process of seaming a wire fabric where
by the tendency of the fabric elements to warp
or buckle is substantially minimized and whereby
' v the elements can be more easily aligned than was
possible in processes heretoforev known.
It is an object of the present invention to pro
vide a means for seaming metallic fabrics of the
type used as endless webs in paper making ma
55, chines whereby the seam produced is not mate
two pieces of wire fabric joined in accordance
with another embodiment of the ‘present inven
tion.
'
Fig. 7 is a vertical sectional detail View of Fig. 6, 35
taken along the line '|-—-1; and
Fig. 8 is a side view of a portion of wire fabric
illustrating the parts removed during the seam
ing process according to the present invention.
Figs. tie-5, inclusive, and Fig. 8 illustrate the 4.0
preferred embodiment of the present invention.
Fig. 1 illustrates the general appearance of por
tions of two pieces of metallic fabric, generally
designated at A and B, joined together by the
members C. This embodiment of the present in
vention is characterized by the overlapping rela
tionship existing between the warp wires, one of
which is designated at E0, and the uniting means,
designated generally at I I. In this type of union
the warp ends are alternately disposed above and
below the uniting means, that is to say, the warp
element it is disposed below the unitingymeans
whereas the warp element Illa is disposed above
same. The elements of each piece of fabric to be 55
2
2,137,789
united are disposed relative to the uniting means
nated at A and B, are cut substantially as shown
is capable of extended application and is not
con?ned to the exact showing of the drawing
nor to the precise construction described, and,
therefore, such changes and modi?cations may
be made therein as do not affect the spirit of the
along the line C, and the weft elements l5, I6, H,
invention nor exceed the scope thereof as ex
and I8 are removed. Referring now to Fig. 3,
two of the warp elements indicated at 20 and 2|
pressed in the appended claims.
in the same manner.
Referring to Fig. 8, the warp elements of the
ends of the fabric to be joined, generally desig
are shown in the position assumed after removal
10 of the weft members as aforesaid. The resiliency
in the warp elements is such that they assume
the extended position shown. Referring now to
joined along the far face of a weft wire, remov
ing ?rst the terminal weft wire and second the
Fig. 4, a solder-covered wire 23 has been pushed
between the expanded warp elements 20 and 2|
weft wire next thereto, placing a solder-covered
wire between the'extended warp wire ends in sub
15 so that it assumes a position corresponding to the
position formerly occupied by one of the weft
elements, substantially as shown, being held in
position by the relatively hard and renitent steel
wire 24. When the members have been so ar
20 ranged the end of the fabric is rolled so that the
hard steel wire forms‘a recess in the warp mem
bers as indicated at 25. The warp wires of the
assembled structure are then out along a plane
perpendicular to the plane of the fabric and
passing along the far side of the wire 24 so that
the portions of the warp elements 20 and 21,
shown in dotted form in Fig. 4, are removed.
The elements 20 and 2| are bent at the ends by
the pressure of the cutting knife, substantially
as shown, so that when the steel wire 24 is re
moved, the elements are'positioned and formed
as indicated in Fig. 5. The ends of the fabric
to be joined are prepared as hereinbefore de
scribed and then positioned relative to each other
35. so that the ends of the warp elements overlap
the solder-covered wires, substantially as shown
in Figs. 1- and 2, the general appearance of the
positioned members being substantially that
shown in Fig. 1. The solder-covered elements
with the warp elements positioned adjacent
thereto, are then heated so that the solder dis
poses itself as shown in Fig. 2, uniting the mem
bers 23 with the warp ‘elements thereby provid
ing a ?rm, resilient and substantial union.
In the embodiment of the present invention
illustrated in Figs. 6 and 7, one piece of the me
tallic fabric to be joined, generally indicated at
A, is prepared as hereinbeforev described, and the
other piece, generally indicated at B, is prepared
- in substantially the same manner except that in
the operation wherein the warp elements are cut,
the cut is made adjacent the far face of the
element 23 instead of adjacent the far face of
*-
, element 24, so that the warp elements of the
‘trio, for instance those indicated at l2 and
v
What is claimed is:
1. Method of joining ends of wire fabric com
prising cutting the warp wires of the ends to be 10
prepared as last described, overlap only one
of the solder-covered connecting members, gen
erally designated at D, instead of overlapping
both as was the case in the other embodiment of
60 the present invention hereinabove described.
The other steps in the operation of joining the
fabric pieces are substantially the same as de
scribed in connection with the other embodiment
of the present invention and the general appear
65 ance of the united fabric ends is substantially as
shown in Figs. 6 and 7.
Although in the embodiment of the present
invention hereinbefore described, reference has
been made to “weft” and “warp” elements, it
70 will be apparent to those skilled in the art that
stantially the position formerly occupied by the 15
weft wire last removed, placing a hard renitent
wire parallel said solder-covered wire and be
tween the extended warp wire ends, cutting the
extended warp ends at a place adjoining the far
face of the renitent wire, removing said wire, 20
positioning the fabric ends to be joined adjacent
each other in a manner whereby the warp ele
ments are in alignment ‘and the projecting ends
of the warp wires overlap more than one solder
covered wire, heating the fabric ends whereby 25
the solder is caused to ?ow over the surfaces
abutting the solder-covered wire and cooling the
assembly whereby the solder is caused to solidify
and the members to be united.
2. Method of joining ends of wire fabric com 30
prising cutting the warp wires of at least one
end of the fabric to be joined along the far face
of a weft wire, removing ?rst the terminal weft
wire and second the weft wire next thereto
whereby the ends of the warp wires are left in 35
extended projecting position, placing a solder
covered wire between the extended warp wires in
substantially the position formerly occupied by
the weft wire last removed, placing a hard ren
itent relatively immalleable wire parallel said 40
solder-covered wire and between the extended
warp wire‘ ends, cutting the extended warp wire
ends at a place adjoining the far face of the
relatively immaleamle wire, removing said wire,
positioning the fabric ends to be joined adjacent 45
each other in a manner whereby the warp ele
ments are in alignment and the projecting ends
of the warp wires of at least one of the ends to
be joined overlap more than one solder-covered
wirerheating the‘ fabric ends whereby the solder
is caused to flow over the surfaces abutting the
solder-covered wire and cooling the assembly
whereby the solder is caused to solidify and‘ the
members to be united.
3. Method of joining ends of wire fabric com 55
prising cutting the warp wires of at least one
end of the fabric to be joined along the far face
of a weft wire, removing ?rst the terminal weft
wire and second the weft wire next thereto
whereby the ends of the warp wires are left in
extended projecting position, placing a solder
covered wire between the extended warp wires
in substantially the position formerly occupied
by the weft wire last removed, placing a hard
renitent relatively immalleable wire parallel said 65
solder-covered wire and between the extended
warp wire ends, rolling the fabric end so pre
pared, cutting the extended warp wire ends at a
place adjoining the far face of the relatively
immaleable wire, removing said wire, position 70
these terms are merely used as a matter of con
ing the fabric ends to be joined adjacent each
venience in description and that in the applica
tion of the present invention, they can be used
other in a manner whereby the warp elements
interchangeably.
It is to be understood that this improvement
are in alignment and the projecting ends of the
warp wires of at least one of the ends to be joined
overlap more than one solder-covered wire, heat 75
3
2,137,789
ing the fabric ends whereby the solder is caused
to ?ow over the surfaces abutting the solder
covered wire and cooling the assembly whereby
the solder is caused to solidify and the members
In to be united.
4. A seam joining wire fabric ends, each of
said fabric ends having a terminal weft wire, the
terminal weft wires of the joined fabric ends
being positioned adjoining each other in sub
10 stantially parallel relationship, the out free ends
of the warp wires of at least one of the pieces
of joined fabric extending beyond the axis of and
overlying the terminal weft wire of another piece
of fabric joined thereto, said terminal weft wires
and said warp wire ends being united to hold
same in relatively ?xed relationship.
5. A seam joining wire fabric ends, each of said
fabric ends having a terminal weft wire, the
terminal weft wires of the joined fabric ends
being positioned adjoining each other in sub
stantially parallel relationship, the cut free ends
of the warp wires of each of said pieces of joined
fabric extending beyond the axis of and over
lying the terminal weft wire of the piece of fabric 10
joined thereto, said terminal weft wires and said
warp wire ends being united to hold same in
relatively. ?xed relationship.
WILLIAM J. TAYLOR.
‘
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