Year: 1884

page_text: AND
MACHINERY TOR MAKING
"3
THE SAME to be as follows:-
This invention has for its object improvements in wire netting and in machinery
for making the same.
In the machine at present in use for the manufacture of wire netting two sets
of wires are employed. One set is supplied from bobbins or reels and the other
set is drawn out from tubular bolders in which the wire is coiled in close helical or
spring like coils.
The twisting parts of the machine consist of a row of toothed pinions each
divided into two parts, a front part and a back part. The wires coming from the
bobbins are led upwards through eyes or holes in the back row of half pinions. The
wires from the tubes are led through eyes or holes in the corresponding half piuions
in the front row.
The bearings of both half pinions back and front rows are carried by moveable
plates or bars which slide laterally so that each front and back half pinion is
carried to and fro from oue half pinion in the one row to the other half pinion in
the other row. Whilst the front and back parts coincide the pinions are rotated by
the movement of a rack with the result that the tubes with the wires they contain
are carried bodily around the wires from the bobbins and the wires are thus twisted
together in pairs. Then by the lateral movement of the front and back rows of
half pinions they are brought to coincide with other half pinions and all are again
caused to rotate. Thus each wire twists alternately with two other adjacent wires.
The twist is in one direction on the one wire and in the opposite direction on the
other wire.
Now according to the present Invention we dispense with the tubes and springs
and supply all the wires from bobbins. In making each twist we rotate the

page_text: pinions first in one direction for say one and a half or two or more turns and then
to an equal amount in the opposite direction. The net produced thus differs from
ordinary wire netting every twist in one direction being compensated by a corre-
sponding twist in the reverse direction. This obviates the necessity for conveying
the wires of one set bodily around the wires of the other set. Consequently
bobbins on stationary spindles can be substituted for the springs in the tubes.
In the improved machine when the pinions have rotated to the extent requisite
to produce the half of the twist necessary to form the sides of a row of meshes
nipping blades are made to close upon the netting and retain this twist whilst the
pinions rotate in the reverse direction and produce the other half of the twist
completing thereby the sides of the meshes. The nippers then open, the work is
wound up, the lateral movement of the half pinions takes place thereby pairing the
wires differently, then the twisting operation is repeated and so the work proceeds.
The netting is afterwards galvanized.
In this way not only are considerable economies obtained but a more regular
shaped and stronger and better net can be produced.

page_text: Improvements in Wire Netting and in Machinery for Making
the same.
We, JAMES BRYCE BROWN of N° 90 Cannon Street in the City of London Wire
Netting Manufacturer and WILLIAM SCARLES of N° 68 Orchard Street Victoria
Street in the City of Westminster Mechanic do hereby declare the nature of our
invention for "IMPROVEMENTS IN WIRE NETTING AND IN MACHINERY FOR MAKING
THE SAME," and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention has for its object improvements in wire netting and in machinery
for making the same.
In the machine at present in use for the manufacture of wire netting two sets
of wires are employed. One set is supplied from bobbins or reels and the other
set is drawn out from tubular holders in which the wire is coiled in close helical or
spring like coils.
The twisting parts of the machine consist of a row of toothed pinions each.
divided into two parts, a front part and a back part.
The wires coming from the bobbins are led upwards through eyes or holes in the
back row of half pinions. The wires from the tubes are led through eyes or holes
in the corresponding half pinions in the front row.
The bearings of both half pinions (back and front) are carried by moveable.
plates or bars which slide laterally so that each front and back half pinion is
carried to and fro from one half pinion in the one row to the other half pinion in
the other row. Whilst the front and back parts coincide the pinions are rotated by
the movement of a rack with the result that the tubes with the wires they contain
are carried bodily around the wires from the bobbins and the wires are thus twisted
together in pairs. Then by the lateral movement of the front and back rows of
balf pinions they are brought to coincide with other half pinions and all are again
caused to rotate. Thus each wire twists alternately with two other adjacent wires.
The twist is in one direction on the one wire and in the opposite direction on the
other wire.
Now according to the present invention we dispense with the tubes and springs
and supply all the wires from bobbins. In making each twist we rotate the
pinions first in one direction for say one and a half or two or more turns and then.
to an equal amount in the opposite direction. The net produced thus differs from
ordinary wire netting every twist in one direction being compensated by a corre-
sponding twist in the reverse direction This obviates the necessity for conveying
the wires of one set bodily around the wires of the other set. Consequently
bobbins on stationary spindles can be substituted for the springs in the tubes.
In the improved machine when the pinions have rotated to the extent requisite
to produce the half of the twist necessary to form the sides of a row of meshes.
nipping blades are made to close upon the netting and retain this twist whilst the

page_text: wound up, the lateral movement of the half pinions takes place thereby pairing the
wires differently, then the twisting operation is repeated and so the work proceeds.
The netting is afterwards galvanized.
In this way not only are considerable economies obtained but a more regular
shaped and stronger and better net can be produced.
In order that our said invention may be most fully understood and readily
caried into effect we will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a portion of our improved wire netting.
Figure 2 is a plan and Figure 3 is a transverse section showing parts of a
machine in which this netting may be manufactured.
The operative parts only of the machine are represented in these figures; the move-
ments herein after more fully described are given to them by means of cams upon
rotating axes or it may be by other suitable means.
In Figure 1 it will be seen that where the wire is twisted together between mesh
and mesh half of the twist is in one direction and the other half is in the other direction
this is the distintive feature in our improved netting, it renders it easier of manu-
facture and has other advantages as already stated. After the wires have been
twisted together as shown the netting is galvanized in the usual inanner.
In the machine represented in the drawings a a are portions of the main frame,
they support the trough like parts bb so that the same can be slidden end wise
and this motion is imparted to them by cams at suitable times. In the parts b b
bearings are formed in which the parts c c¹ are held and are capable of being
rotated. These parts have teeth formed upon them at c* c* and with these teeth
the rack d engages. The rack d also receives end wise movement by means of a cam as
hereinafter stated. ff are a pair of bars, they are carried upon brackets a¹ a¹
forming part of the frame in such manner that they can advance towards each
other to nip the wires and retire to release them at suitable times. One of the
bars is provided with spring plungers f¹ and it is by these that the wires are
nipped and pressed against the face of the opposing bar.
The bars ff are actuated by other bars g g within them and which partake of
their movements but which also receive a longitudinal motion by means of a cam;
this motion is parallel to that of the bars b and the rack d. There are inclined
grooves in the bars g and corresponding projections on the brackets a¹ enter these
grooves; hence the endwise movement of the bars g g causes the bars ff to close
together or to separate. h is the roller on which the wire netting as it is produced
is wound forward; the roller is moved step by step as hereinafter stated.
The wire to produce the netting is brought to the machine wound upon bobbins
which are arranged in a rack beneath the machine. The ends of the wires are led
upwards from the bobbins through eyes or holes c° formed in the parts c and c¹.
Immediately above these eyes or holes the wires are combined together to
produce the netting and this netting as fast as it is made is wound forward by the
roller h.
At the commencement of the course of work the wires are all nipped together
in pairs, each plunger f¹ pressing on two wires and holding them firmly against the
opposing bar f. The rack d then moves say to the left this causes the parts c c¹ to
rotate and the wires which are threaded through them are twisted together in pairs
immediately beneath the nip of the parts ff. These parts then separate and the
roller rotates so far as to raise the twist on the wires above the pressers f¹ and
this being done the parts ff1 again close together and the wires again are held
fast. The rack d now moves to the right returning to its original position which
results in the parts c c rotating in the opposite direction to that in which they'

page_text: previously rotated and an opposite twist is consequently put upon the wires. The
nipping bars ff now again separate and a further winding up of the work takes
place whilst at the same time the bars b b move in opposite directions, the rack d
moving with its bar. This novement of the parts b b separates the parts c c¹
which have previously worked together and re-pairs them each bar b taking with
it one set of twisters c or c¹ and moving a distance equal to half the interval between
bearing and bearing.
When the twisters are re-paired the wires are again nipped and the work
proceeds as before the bars b b at the end of the sequence of motions returning to
the positions they occupied at the commencement of the cycle.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
(1.) Our improved wire netting in which where the wires are twisted together
to form the meshes each twist is compound, part turning in one direction and part
in the contrary direction.
(2.) Our improved machinery for the manufacture of wire netting in which
rotating tubular holders are dispensed with and the wires drawn from bobbins are
passed through parts c c¹ which whilst together in pairs are rotated first in one
direction and then in the other and are then re-paired substantially as herein
described.