Improvement'in or connected with Pneumatic Tyres.
Year: 1897

page_text: Date of Application, 21st Apr., 1897
Complete Specification Left, 19th Jan., 1898-Accepted, 5th Mar., 1898
Improvement'in or connected with Pneumatic Tyres.
I, CHARLES HENRY GUEST, General Manager of R. W. Webb Limited, of
Draycott, in the County of Derby, do hereby declare the nature of this invention
to be as follows:-
My invention relates to improved means for fixing pneumatic tyres to wheel
rims.
According to my invention I employ a cover having two or more slots or tubes
in each side one above or outside another and I thread laces of tape, string or the
like through these tubes each lace alternately passing from one tube to another at
suitable points.
With this arrangement as the tyre is inflated and the top or outer slot or tube
tends to increase in diameter the portions of the laces in the outer tube pull upon
the laces in the inner tube and contract the latter until the edge of the cover comes
into contact with the rim.
Instead of employing laces as described I may employ specially woven fabric in
which all the threads which run lengthwise of the fabric are brought to the edge of
the same and pass alternately from side to side in a diagonal direction, the said
threads running along the edges of the fabric for a short distance before crossing
over.
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1004
Improvement in or connected with Pneumatic Tyres.
I, CHARLES HENRY GUEST, General Manager of R. W. Webb Limited, of
Draycott, in the County of Derby, 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:―
My invention relates to improved means for fixing pneumatic tyres to wheel
rims.
According to my invention I employ a cover having two or more slots or tubes
in each side one above or outside another and I thread laces of wire, tape, string or,
[Price 8d.]

page_text: •
at suitable points.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is an elevation of a wheel rim having upon it a tyre provided with
means for fixing it upon the rim according to my invention, the said rim being
partly broken away:
Figure 2 is a radial section through the rim and tyre drawn to an enlarged
scale:
Figure 3 is a plan view drawn to the same scale as Figure 2 of a piece of the
tyre cover made flat or developed :
Figure 4 is a diagram shewing the arrangement of the fixing wires or the like;
and
Figure 5 is a similar view shewing a slight modification.
a is the wheel rim, b is the cover or jacket of the tyre and c the air tube of the
said tyre.
d, e are two tubes or pockets formed in each edge of the jacket and f, g are the
wires or the like, which wires, shewn in Figures 1 to. 4, are in the form of endless
rings and of a diameter greater than that of the wheel rim a on the flanges. "These
wires are fixed in the tubes or pockets d, e so that for say half the circumference
of the jacket each wire f runs in a pocket d and then for the other half runs
through a pocket e whilst each ring is for half its circumference in a pocket
and then crosses over the other wire f into a pocket d in a manner which will be
clearly understood by reference to Figure 3.
.
e
In putting on a jacket provided with wires in its edges as hereinbefore described
the two rings are pulled so that they lie one above another to permit of their being
passed over the edges of the ring. When the jacket is upon the rim and the tyre
is inflated the portions of the rings in the pockets or tubes e, e move outwardly in a
radial direction so that the other parts of the rings in the pockets d, d are pulled
towards one another as indicated in Figure 4 and so pull the edges of the cover into
contact with the rim.
Instead of using two rings in each edge I sometimes make use of a single end-
less wire having two convolutions which cross each other at one point, as shewn in
Figure 5, the pull or pressure upon the outer convolution in the pocket e when the
tyre is inflated tending to pull the inner convolution in the pocket d into con-
tact with the rim. It will be understood in putting on the tyre having a single
wire, as shewn, in the edge of the cover, that the two convolutions lie one over the
other and are of larger diameter than the edge of the rim so as to pass over the
same.
Although I have shown and described one or two wires as being arranged in each
edge of a cover it is to be understood that three, four or more wires may be
made use of.
Having now particularly described, and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
:
F.
:
.
1. The improvement connected with pneumatic tyres consisting in forming in
each edge of the jacket or cover two tubes or pockets for containing wires, strings or
the like, the said wires or the like being so arranged that they pass from one tube
or pocket to the other in such a manner that when the tyre is inflated the wires, strings
or the like in the pockets nearest to the rim will be drawn together, substantially
as described.
2. The manufacture and use of pneumatic tyres the covers of which are provided
with fixing wires, strings or the like, arranged and operating substantially in the
manner hereinbefore described and illustrated in Figures 1 to 4 of the accompanying
drawing.
3. In a pneumatic tyre having two or more pockets or tubes in each edge of the tyre

page_text: cover passing a single wire through the two pockets, substantially as described by
reference to Figure 5 of the accompanying drawing.
Dated the 19th day of January 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.