An Improved Fabric for Pneumatic Tyre Covers.
Year: 1898

page_text: Date of Application, 22nd Aug., 1898
Complete Specification Left, 20th May, 1899-Accepted, 22nd Aug., 1899
Date of Application, 22nd Aug., 1898
Complete Specification Left, 20th May, 1899-Accepted, 22nd Aug.. 1899
PROVISIONAL SPECIFICATION.
An Improved Fabric for Pneumatic Tyre Covers.
I, GEORGE CROYDON MARKS, of 18, Southampton Buildings, London, W.C.,
Consulting Engineer and Patent Agent, (a communication from La Société J.
Lacroix et Cie., of 42, Boulevard Bonne-Nouvelle, l'aris,) do hereby declare the
nature of this invention to be as follows;-
This invention relates to an improved fabric for pneumatic tyre covers, the
object being to produce in the process of weaving a strip of material without
a seam and having various thicknesses instead of requiring as in the present
system of forming tyres that the various thicknesses of material should be
obtained by cementing or joining different strips or layers of material together.
In the following description, when I speak of "the edges" of the woven strip,
I refer to the two marginal portions extending lengthwise of the strip on either
side of the central portion. When the strip is bent round to form a ring or tyre,
the edges contain the binding or fastening wires. When I speak of "the ends"
of the woven strip, I refer to the two portions extending across the ends of the
strip, which portions, when the strip is bent round to form a ring or tyre, over-
lap one another and form the joint.
In carrying my invention into effect when weaving a band or strip suitable for
use as a tyre covering, I form the central portion of the strip of different thick-
ness to that of the edges and ends, the material being woven thicker in the cen-
tral portion only. I make the two edges thinner, so that when they are respec-
tively doubled over upon themselves to enclose the binding or fastening wire on
each side, the two thicknesses themselves superposed make the same thickness
as the central portion. Similarly, I make the ends of the strip of such a thick-
ness that when lapped over each other they preserve the uniformity of the tyre
material by making the thickness at that point equal to the central portion.
By weaving the strip of canvas or other material with the varying thickness
obtain a greater resistance than is possible by the existing methods of employing
independent layers of fabric for producing the variation desired.
I make the central portion which forms the tread of the tyre any desired thick-
ness, while the edges and ends I reduce preferably to one half the thickness.
I may make my tyre of a circular form at first instead of joining the ends
together, making the material at the centre thicker than the side portion as
bereinbefore described.

page_text: I, GEORGE CROYDON MARKS, of 18, Southampton Buildings, London, W.C.,
Consulting Engineer and Patent Agent, (a communication from La Société J.
Lacroix et Cie., of 42, Boulevard Bonne-Nouvelle, Paris,) do hereby declare the
nature of this invention 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 an improved fabric for pneumatic tyre covers the
object being to produce in the process of weaving a strip of material without
a seam and having various thicknesses, instead of requiring as in the present
system of forming tyres that the various thicknesses of material should be
obtained by cementing or joining different strips or layers of material together.
The invention is illustrated in the accompanying drawings in which;
Figure 1 is a plan of a cover provided according to the invention.
Figure 2 is a section on the line ay Figure 1.
Figure 3 is a similar section to Figure 2 with the edges of the cover folded
back and covering the wires in the edges so formed.
Figure 4 represents in detail the joining of the two extremities of the cover.
Figure 5 represents an endless cover provided according to the invention.
In the following description, when I speak of "the edges" of the woven strip,
I refer to the two marginal portions extending lengthwise of the strip on either
side of the central portion. When the strip is bent round to form a ring or tyre,
the edges contain the binding or fastening wires. When I speak of "the ends
of the woven strip, I refer to the two portions extending across the ends of the
strip, which portions, when the strip is bent round to form a ring or tyre, over-
Jap one another and form the joint.
In carrying my invention into effect as illustrated in the accompanying draw-
ings, when weaving a band or strip suitable for use as a tyre covering, I form the
central portion of the strip E, F, H, I, of different thickness to that of the edges
and ends A, B, C, 1), the material being woven thicker in the central portion
only. I make the two edges A, C, B, D, thinner, so that when they are respec-
tively doubled over upon themselves to enclose the binding or fastening wire on
each side, the two thicknesses themselves superposed make the same thickness as
the central portion, E, F, H, I. Similarly, I make the ends of the strip of such
a thickness that when lapped over each other they preserve the uniformity of the
tyre material by making the thickness at that point equal to the central portion.
By weaving the strip of canvas or other material with the varying thickness I
obtain a greater resistance than is possible by the existing methods of employing
independent layers of fabric for producing the variation desired.
I make the central portion E, F, H, I, which forms the tread of the tyre any
desired thickness, while the edges and ends I reduce preferably to one half the
thickness.
I may make my tyre of a circular form at first as illustrated in Figure 5
instead of joining the ends together as in Figure 4, making the material at the
centre thicker than the side portion as hereinbefore described.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A cover for pneumatic tyres having the central part of a thickness greater
or double that of the edges or selvages, the said cover being either woven as a
strip (Figure 1) and afterwards joined at its extremities, or formed as an endless

page_text: circular strip (Figure 5) and in such a manner that when the edges or selvages
are turned over for enclosing the wires or other attaching devices, the said edges
present a thickness corresponding to that of the central part, substantially as
described.
2. A cover for pneumatic tyres substantially as hereinbefore described and
Dated this 19th day of May 1899.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents.