Improvements in the Manufacture of Wire-mats.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895
Complete Specification Left, 31st Aug., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Wire-mats.
I, GEORGE GATTON MELHUISH HARDINGHAM, of 191, Fleet Street, in the
City of London, Civil Engineer and Chartered Patent Agent, do hereby declare
the nature of this invention (a communication to me from the Firm of Felten &
Guilleaume, of Mülheim-on-the-Rhine, in the German Empire, Cable Manu-
facturers), to be as follows:-
This invention relates to the manufacture of wire-mats from wire spirals and to
the employment for such purpose of oval or flattened spirals formed from flat wire,
instead of cylindrical spirals formed of round wire, as heretofore. In using a mat
composed of cylindrical spirals, the wear is confined to a small portion of the upper
surface of each convolution; whereas in mats composed of oval or flattened spirals,
the tread is distributed over a considerably larger proportion of each turn of the
wire. Moreover, by using flat wire, the effectiveness of the article as a scraper is
improved, and, without increase of material, the mat becomes more rigid and better
able to support weight.
In carrying out the improved mode of manufacture, the convolutions of
contiguous spirals when laid up to form the mat may alternate with one another
Or the convolutions of the
and be then threaded by an interlocking rod or rods.
contiguous spirals may entwine with one another, in which case longitudinal rods
for interlocking the spirals may be dispensed with.
Where the convolutions of contiguous spirals are arranged midway between one
another the mat possesses considerable elasticity. Where comparative rigidity is
desired, the spirals are laid up in such a manner that the turns of the wires when
they embrace the interlacing rods are in contact with, instead of being separated
from, one another. Under such circumstances, the convolutions present the
appearance of continuous diagonal lines.
In order to provide against mats of the kind hereinbefore referred to becoming
slippery in wet or frosty weather, the spirals may be twisted some right- and some
left-handed, and laid up alternately or in alternate pairs in the construction of the
mat. Each spiral may embrace two or even three interlacing rods.
The sectional form of the wire employed for the spirals, or for the wires or rods
composing the interlocking rods, or constituting the frame, may be triangular,
quadrangular, semicircular or polygonal. Some of the advantages resulting from
the present invention are realisable from mats manufactured from round wire.
ليد
Deamba- 1005
I, GEORGE GATTON MELHUISH HARDINGHAM, of 191, Fleet Street, in the
City of London, Civil Engineer and Chartered Patent Agent, do hereby declare
the nature of this invention (a communication to me from the Firm of Felten &
Guilleaume, of Mülheim-on-the-Rhine, in the German Empire, Cable Manu-
facturers), and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention relates to the manufacture of wire-mats from wire spirals and to

page_text: "
the tread is distributed over a considerably larger proportion of each turn of the
wire. Moreover, by using flat wires, the effectiveness of the article as a scraper is
improved, and, without increase of material, the mat becomes more rigid and better
able to support weight.
In the accompanying drawings,
Figs. 1 and 2 are respectively a transverse section and a plan of a wire-mat
manufactured in accordance with this invention.
Figs. 3 and 4 are similar views of a modified construction, while
Figs. 5 and 6 illustrate an alternate mode of manufacture.
Fig. 7 is a plan of a further modification.
Referring to Figs. 1 to 4, a a are the flat-wire spirals, bis the border, c is the wire
for securing the mat to the border, d d are lacing or interlocking rods and e e are
stiffening rods.
In carrying out the improved mode of manufacture, the convolutions of contiguous
spirals a a when laid up to form the mat may entwine with one another as shown in
Figs. 1 and 2. Or they may alternate with one another (Figs. 3 and 4) and be
then threaded by an interlocking or interlacing rod or rods d; stiffening rods or
bars e being employed to impart rigidity. In this example, the spirals a are shown
as embracing two rods d, but it will be understood that more than two rods d may
be embraced by the spirals a.
Where the convolutions of contiguous spirals a are arranged midway between
one another as shown in Fig. 4, the mat possesses considerable elasticity. If com-
parative rigidity be desired, the spirals a are laid up in such a manner that the turns
of the wires, where they embrace the rods d, are in contact with, instead of being
separated from, one another. Under such circumstances, the convolutions present
the appearance of continuous diagonal lines, similar to Fig. 2.
In order to provide against mats of the kind herein before referred to becoming
slippery in wet or frosty weather, the spirals, Figs. 5 and 6, may be twisted some
right and some left-handed; a¹ being the right-handed and a² the left-handed
spirals. These spirals may be laid up alternately in the construction of the mat as
shown in Fig. 6, or they may be laid up in alternate pairs. Each spiral a', a² may
embrace two interlacing rods d (Fig. 6), or even three interlacing rods as shown in
Fig. 7. By these modes of construction the spirals run in opposite directions and
thereby afford a firm foot-hold.
The sectional form of the wire employed for the spirals, or for the wires or rods
composing the interlocking rods or constituting the frame may be triangular,
quadrangular, semicircular or polygonal. Some of the advantages resulting from
the present invention are realisable from mats manufactured from round wire.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, and knowing that it has
been proposed to manufacture wire-mats from flattened or rectangular spirals in
order to afford a flat bearing surface and distribute the tread over a large area,
I claim :-
1. In the manufacture of wire-mats from oval or flattened spirals, the employ-
ment of wire of flat, triangular, quadrangular, semicircular or polygonal section,
whereby greater rigidity is secured.
2. A wire-mat composed of flattened or oval spirals formed of wire of flat,
triangular, quadrangular, semicircular or polygonal section, the said spirals being
entwined with one another, substantially as described with reference to Figs. 1
and 2 of the accompanying drawings.
3. A wire-mat composed of flattened or oval spirals formed of wire of flat,
'triangular, quadrangular, semicircular or polygonal section, the said spirals

page_text: alternating with one another and being threaded longitudinally by interlocking
rods, substantially as described with reference to Figs. 3 and 4 of the accompanying
drawings.
4. A wire-mat composed of right- and left-handed flattened or oval spirals
formed of wire of flat, triangular, quadrangular, semicircular, polygonal or circular
section, the said right- and left-handed spirals alternating with one another and
being threaded by interlocking rods, substantially as described with reference to
Figs. 5 and 6, or to Fig. 7, of the accompanying drawings.
Dated this 19th day of August 1896.