Improvements in the Covers of Pneumatic Tyres.
Year: 1898

page_text: Date of Application, 24th Oct., 1898
Complete Specification Left, 24th July, 1899-Accepted, 24th Oct., 1899
PROVISIONAL SPECIFICATION.
Improvements in the Covers of Pneumatic Tyres.
I, WILLIAM ARTHUR GRIFFITHS, Tyremaker, of 299, Bradford Street,
Birmingham, in the County of Warwick, do hereby declare the nature of this
invention to be as follows:-
This invention relates to the covers of pneumatic tyres, and its object is to
provide a cover for the inflatible tubes of pneumatic tyres, which can be fitted to
either a flat, or dished rim, of any ordinary section at present in use, and which
at the same time will completely envelope and protect the inflatible tube, and
which can also be easily detached for the purpose of repair. In order to effect
these objects, I make my cover in two parts, both of which engage with each
other at their edges, when the cover is fitted together. In the edges of both of
these parts, I insert a length of flat, thin, spring ribbon steel, with their ends
laid to, or overlapping. One of these parts I preferably make of sufficient
dimensions to fit close to the face of the rim it is intended to fit the cover to, and
the lengths of steel in this part, I turn inwards towards the centre of its outer
face, so as to form a recess, or groove, around each side of its outer face.
The other part I make of larger dimensions, in order to present a greater
bearing surface to the road, and the lengths of steel in the edges of this part, are
made of sufficient dimensions to slide into the recess, or groove, formed by the
lengths of steel in the other part, or, as it were, hang upon the lengths of steel,
forming the recess, or groove, and, engaging firmly with them, when the tyre
is blown up, the cover forms a complete envelope around the inflatible tube. It
will be found that the tyre as thus formed can be safely fitted to any ordinary
rim, or felloe, at present in use, of a flat, or dished, section. That part of the
cover which I fit on to the face of the rim, I may make either in a circle, or in a
length, which can be buttoned or otherwise fastened around the felloe, but the
ends of the lengths of steel therein I do not in any way connect. It is obvious
that I may form my cover in a variety of ways, without departing from the nature
of my invention.
Dated this 22nd day of October 1898.
COMPLETE SPECIFICATION.
Improvements in the Covers of Pneumatic Tyres.
I, WILLIAM ARTHUR GRIFFITHS, of 299, Bradford Street, Birmingham, in the
County of Warwick, Tyre Maker, 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 the covers of pneumatic tyres and its object is to
provide a cover for the inflatible tubes of pneumatic tyres which can be fitted to
either a flat or dished rim of any ordinary section at present in use and which
at the same time will completely envelope and protect the inflatible tube and
which can also be easily detached for the purpose of repair.
In order that my invention may be clearly understood and more easily carried
[Price]

page_text: into practise I have appended hereunto one sheet of drawing upon which I have
fully illustrated the nature of my said improvements.
Figure 1 is an enlarged section through one of my tyres with the cover attached
complete.
Figure 2 is a part similar section to Figure 1 but shewing the cover detached.
Figure 3 is a view of the rim part of the cover detached.
Figure 4 is also a view of the rim part of the cover but shewing the fastening
of the ends together.
Figure 5 is a similar view to Figure 3 but shewing a modification.
Figure 6 is also a similar view to Figure 3 but shewing a modification.
In carrying my invention into effect I make my cover in two parts A and A
both of which engage with each other at their edges when the cover is fitted
together, the part A consisting of strong canvas or other such material, and of a
similar kind to that usually forming the lining of the part A¹.
In the edges of both of these parts I insert lengths of flat, thin, spring ribbon
steel bands 61 and 62 with the ends of the steel laid to or overlapping.
The one A I preferably make of sufficient dimensions to fit close to the face of
the rim B which is intended to fit the cover, and the lengths of steel in this part
I turn inwards towards the centre of the outer face as shewn at Figure 3 so as
to form a recess or groove a² around each side of the outer face.
The part A is made of larger dimensions in order to present a greater bearing
surface to the road and the lengths of steel 62 in the edges of this part are made
of sufficient dimensions to slide into the recess or groove a² formed by lengths of
steel in the other part or as it where hang upon the lengths of steel b¹ forming
the recess, or groove and engaging firmly with them, when the inner tube c
contained in the tyre is blown up the cover forms a complete envelope around the
inflatable tube.
It will be found that the tyre as thus formed can be safely fitted to any ordinary
rim or felloe at present in use of a flat or dished section.
That part A of the cover which I fit on to the face of the rim B I may mako
either in a circle or in a length which can be buttoned or otherwise fastened
around the felloe as shewn by Figure 4 but I do not connect the ends of the
lengths of steel in any way. It is obvious that I may form my cover in a variety
of ways without departing from the nature of my invention as for instance
metal hooks E can be used instead of the lengths of wire or both parts of the
cover as shewn in Figure 6 interlocked with each other or two parallel lengths
of wire F and F can be used in both parts of the cover and stitched into the
canvas and such parallel lengths of wire can also be connected with small metal
bridges at intervals to ensure their lying parallel in which case one wire is
bent over the other so as to form a continuous hook on both parts of the cover
as shewn by Figure 5 the continuous hooks thus formed being interlocked as
before described thus forming a modified method of attachment while small
tubular sleeves f* can be used to cover the ends of the wire so as to insure the
free expansion and contraction of the wire in order to fit the tyre to the rim.
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:
In pneumatic tyres the inner part of the cover A for fitting the rim in com-
bination with the outer part A¹ and means for attaching and detaching the two
parts substantially as and for the purpose herein set forth and illustrated.
Dated this 17th day of
1000
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham,