Improvements in or relating to Pneumatic Tyres.
Year: 1893

page_text: Date of Application, 22nd June, 1893-Accepted, 16th June, 1894
COMPLETE SPECIFICATION.
Improvements in or relating to Pneumatic Tyres.
I, EDWARD EDWARDS, of 10, Friday Street, in the City of London, Manu-
facturers Agent, 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 a pneumatic tyre and pertains particularly to the
means for securing the air tube to the rim of the wheel, the special object in view
being so to secure the air tube as to admit of ready access being had to it for
repairs in case of puncture or other damage.
The invention will be best understood by reference to the accompanying
drawings in which
Figure 1 is a section of a rim and canvas cover constructed according to my
invention, the cover in this view being loose, and
Figure 2 is a similar section showing the cover fastened to the rim and containing
the air tube which is inflated ready for use.
Like letters indicate like parts in both figures of the drawings.
The rim A shown in the accompanying drawings is of the section which I prefer
to employ in carrying out my invention though a rim of a different section may if
desired be used. The rim shown in the drawings consists of an angular outer
surface A and a rounded inner surface A³ the whole constituting what might be
regarded as a tube. B is the canvas cover which in its normal or developed
condition is in the form of an endless strip and may have a thickening of rubber C
in the usual manner to strengthen it at the tread surface and one edge of which may
be provided with studs or hooks B' and the other edge with eyelets B' adapted to
engage with the studs or hooks B¹. D is a wire cord or equivalent encircling the
cover B and holding it close against the angle A³ of the rim A. The rim A at
this part, namely A³, may be depressed so as if necessary to form a small or
shallow groove adapted to receive the secured part of the cover B and the wire D,
but, with the construction of rim shown in the drawings this additional groove is
not considered necessary.
E, Figure 2, is the air tube which may be of ordinary construction.
The wire D, the ends of which may be fastened in any convenient manner,
secures the cover B permanently on the rim A and when it is desired to place the
air tube E in position all that is necessary is to fold back the tread or outer
portion of the cover B in a manner somewhat as shown in Figure 1 and then place
the air tube E around the inner portion of the cover. The outer portion of the
cover B is then brought over the air tube E and the eyelets B* are engaged with
the studs or hooks B in the manner shown in Figure 2. The air tube E is then
inflated and both it and the cover B will be pressed towards or against the rim A.
This pressure also holds the overlapping portions of the cover B together and
presses them against the adjacent portion of the rim A as shown in Figure 2 and
this will prevent the cover B coming undone at its joint.
When it is desired to have access to the air tube E to repair a puncture or for
other purposes, all that is necessary is to deflate the air tube, push the cover B to
one side (the left in Figure 2) and undo the cover-fastenings B' B' when the air
tube will be fully exposed to view and may if desired be entirely removed from the
wheel rim.
Instead of the edges of the cover B overlapping and being joined by hooks or
studs and eyelets the edges need not overlap and may be joined by lacing or other
suitable means and if desired the joint instead of being located adjacent to the

page_text: rim A may be located beyond it, that is to say, between it and the tread surface of
the tyre; the arrangement shown however is that which I prefer.
It will be obvious that instead of securing the cover B to the rim A by one wire
only, two or more may be used if the rim be constructed to accommodate them,
though one as shown in the drawings is considered ample for the purpose.
The before described tyre or air tube may be inflated through a non-return valve,
of the usual construction, said valve passing through the hole in the rim A in the
ordinary manner.
Having now particularly described and ascertained the nature of the sau
invention and in what manner the same is to be performed, I declare that what
I claim is :-
:-
1. Securing the air tube of a pneumatic tyre to a wheel rim by means of a cover
or strip permanently held to the rim by one or more wires or equivalent passing
between the cover and air tube substantially as described.
2. The combination with a wheel rim such as A and air tube E of a stri
cover such as B and one or more wires or equivalent such as D passing around Lue
inner portion of the cover and between it and the air tube E substantially as
described and illustrated in the accompanying drawings.
3. The combination with a wheel rim and air tube E of a strip or cover such
as B held to the wheel rim by one or more wires or equivalent and having means
such as studs and eyelets laces or equivalent for securing together its edges
substantially as described and illustrated in the accompanying drawings.
4. The combination and arrangement of the cover B B B air tube E and wire
or equivalent D substantially as described and illustrated in the accompanying
drawings.
Dated this 22nd day of June 1893.
EDWARD EDWARDS.
W. P. Thompson & Boult,
Agents for the Applicant.