IMPROVEMENTS IN ELASTIC WHEEL TYRES
Year: 1885

page_text: We HENRY BARRETT and JOHN JAMES VARLEY both of Charterhouse Buildings,
Goswell Road, in the county of Middlesex, Manufacturers do hereby declare the
nature of our said invention for "IMPROVEMENTS IN ELASTIC WHEEL TYRES" to be
as follows:
The present improvements relate to constructing elastic wheel tyres of vulcanized
india rubber over a flat core consisting of a strip or length of suitable flexible
metal such as flat spring steel or of other suitable material such as ebonite.
A suitable method of manufacturing the tyres consists in covering the coro (when
made of flat metal) with hard rubber, hemp or otherwise; the ends of the core are
lapped one over the other, or not as required; when the ends are lapped provision
is made to allow one end to slide over the other. The core (whether coated or not)
is then covered with rubber dough or the compound used to produce vulcanized
india rubber, and the same is cured or treated in the manner usual to produce
vulcanized india rubber.

page_text: Improvements in Elastic
Дос тугов
We HENRY BARRETT and JOHN JAMES VARLEY both of South Lambeth Road,
in the county of Surrey, Manufacturers 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 constructing elastic wheel tyres of vulcanized india
rubber over a flat core consisting of a strip or length (or strips or lengths) of
suitable metal such as flat spring steel or of other suitable material such as
ebonito.
In order to enable our invention to be fully understood we will describe the
same by reference to the accompanying drawing in which figure 1, is an elevation
of a portion of an elastic wheel tyre provided with a flat core according to our
invention, the core being covered with a suitable material such as hemp; figure 2,
is a cross section of the same; figure 3, is a side elevation of a portion of the core
shewing the ends thereof lapped over each other, and connected by a strip of
rubber forming a spring; figure 4, is a similar view to figure 3, but shewing the
core without the covering; figure 5, is a longitudinal section of a portion of a tyre
having a core similar to that shewn in figures 1, and 2, the ends of the core not
being lapped over each other; figure 6, is a view on a reduced scale of the complete
core; similar letters in all the figures represent similar parts.
Referring to figures 1, 2, 3 and 6 a, represents the flat core consisting of a strip
or length of suitable flexible metal such as flat spring steel which is shewn covered
with a suitable material b, such as hemp; the said core is formed into a circle or
ring of the required size as shewn in figure 6, and the ends of the core are lapped
over each other (as clearly shewn in figure 3); a strip or layer of rubber dough or
the compound used to produce vulcanized india rubber c, is then inserted between
and attached to the said ends by means of solution or otherwise, so as to form a
spring which will allow of the tyre being stretched when placing the same over the
felloe of the wheel. Or the ends of the core can be merely overlapped without
being connected by the said spring c, and the ends of the core in this case would
merely slide over each other when the tyre is stretched, one or both ends of the
core being provided with a clip or guide so as to prevent the ends of the core
separating; d, figures 1 and 2, is the tyre which is formed by covering the core,
made as described and shewn in figure 6, with rubber dough or the compound used
to produce vulcanized india rubber which together with the inserted strip c is then
cured or treated in the manner usual to produce vulcanized india rubber.
By these means we thus obtain an endless elastic wheel tyre provided with a flat
core, which tyre can be sprung into the groove in the rim of a wheel and cannot
then be easily displaced or removed, as the tyre, being placed with the core
flatwise in the rim or felloe of the wheel, will be prevented from rolling out of its
place and coming off the wheel, which has hitherto been the source of frequent
annoyance and loss of time. The tyre can also be fixed in the rim without the use
of cement. Further, when the surface of the tyre has become worn, the tyre can
be removed and replaced in the rim or felloe of the wheel in the reverse position,

page_text: that is to say, with the worn surface within the rim or felloe, thereby allowing of
the whole of the tyre being used.
Instead of the flat core being covered with fabric as herein before described and
shewn in figures 1, 2, and 3, the core can be used without the fabric as shown in
figure 4.
The core of the tyre illustrated in figure 5, is the same as that hereinbefore
described when referring to figures 1, 2, 3 and 6 with the exception that the ends
are not overlapped, but are brought to within a short distance of each other, the
elastic material d, of the tyre intervening between the said ends in order to give
the required elasticity to allow the tyre to be sprung over the felloe of the wheel.
Or, as will be well understood, the ends of the core can be connected by means
of a suitable spring which will give the required elasticity.
Instead of covering the core, when of metal, with material such as hemp as
hereinbefore described and shewn in figures 1, 2, 3 and 5, it may be covered with
hard rubber or other suitable material; further, the core itself may be formed of
ebonite in which case no covering would be required.
It will be obvious that, instead of forming the core for each tyre in a single
length as herein before described and shewn in figure 6, it may be formed in
sections.
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. The manufacture and use of elastic wheel tyres having a flat core (or
cores) of metal or other suitable material either in a single length or in sections,
substantially as hereinbefore described.
2. Joining the ends of flat cores for elastic wheel tyres by inserting a strip or
layer of india rubber or like material between, and attaching it to the said ends,
substantially as herein before described and represented in figures 3, 4 and 6, of the
accompanying drawing.
3. The improved elastic wheel tyres herein before described and represented in
figures 1, 2 and 5, of the accompanying drawing.
Dated the 70th Int
T1000