Improvements in Pneumatic Tyres and the Means for Inflating the same.
Year: 1896

page_text: Date of Application, 16th Dec., 1896
Complete Specification Left, 14th Aug., 1897-Accepted, 16th Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres and the Means for Inflating the
same.
FREDERICK BILLING of Livery Street, Birmingham Manufacturer and WILLIAM
EDWARD PARTRIDGE of 74 Grange Road, Small Heath Birmingham, Traveller both in
the County of Warwick do hereby declare the nature of our said invention to be as
follows:-
Our invention has for its object improvements in pneumatic tyres and the means
for inflating the same which enables us to more effectively provide against the vital
effects of puncture and also for more readily removing the tube covers from the wheel
rims.
According to one part of our invention we use two, three or more air tubes all of
which are covered by one cover and secured to the wheel rim. Each of these inner
air or gas tubes is provided with a separate branch for inflation but all the branches
with their separate valves may pass through the one opening in the wheel rim, so that
the air or gas pump may be connected to all the nipples or branches at one time.
For this purpose we construct the air or gas pump with a number of branch connec-
tions according to the number of tubes to be inflated each one communicating with
the pump chamber. By this means an equal pressure of air is forced into all the
tubes at the same time and with the same pumping action. In case one or more of
these air tubes become punctured it would be still possible to ride the wheel without
stopping. On the other hand by stopping the remaining tubes may be made to fill
the vacant space by further inflation. Another portion of our invention consists in
using coiled strips of spring of spring steel in the edges of the tyres or cover or in
a portion of it or it may be a wire with a portion only so coiled so that the edge of
the tyre may be more easily sprung over the edge or edges of the rim, as the coiled
portions of the wire would allow the edges to be extended sufficiently for that purpose
and yet be sufficiently stable to retain the cover in position against coming off the
wheel.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres and the Means for Inflating the
same.
We, FREDERICK BILLING, of Livery Street, Birmingham, Manufacturer, and WILLIAM
EDWARD PARTRIDGE, of 74, Grange Road, Small Heath, Birmingham, Traveller, both
in the County of Warwick, do hereby declare the nature of our said invention and
Cine 8d1

page_text: in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement -
Our invention has for its object improvements in pneumatic tyres and the means
for inflating the same which enables us to more effectively provide against the vital
effects of puncture and also for more readily removing the tube covers from the wheel rims.
According to one part of our invention we use two, three or more air tubes, all of
which are covered by one cover and secured to the wheel rim. Each of these inner
air or gas tubes is provided with a separate branch for inflation, but all the branches
with their separate valves may pass through the one opening in the wheel rim, so that
the air or gas pump may be connected to all the nipples or branches at one time.
For this purpose we construct the air or gas pump with a number of branch connections
according to the number of tubes to be inflated, each one communicating with the
pump delivery chamber. By this means an equal pressure of air is forced into all the
tubes at the same time and with the same pumping action. In case one or inore of
these air tubes become punctured it would be still possible to ride the wheel without
stopping. On the other hand by stopping, the remaining tubes may be made to fill
the vacant space by further inflation. Another portion of our invention consists in
using coiled strips of spring steel in the edges of the tyre or cover or in a portion of it
or it may be a wire with a portion only so coiled so that the edge of the tyre may be
more easily sprung over the edge or edges of the rim, as the coiled portions of the
wire would allow the edges to be extended sufficiently for that purpose and yet be
sufficiently stable to retain the cover in position against coming off the wheel.
- In order that our invention may be more clearly understood and easily carried into
practical effect we have appended hereunto a double sized sheet of drawings upon
which we have illustrated examples of our improvements.
Figure 1 is a cross sectional perspective view of part of our tyre and rim.
Figure 2 is a cross sectional perspective view of part of the outer cover of our tyre.
Figure 3 is a similar view to Figure 1 showing the valves and connections to the
inflater for inflating our tyre when using three inner tubes.
In carrying one part of our invention into practice we form the edges a¹ of our
outer cover A with a spiral or coiled spring S enclosed in each. These coiled springs
which may be made from fine round spring steel wire or flat spring steel are first
embedded in the rubber tube or pipe B when moulding the same and then this pipe
or tube is enclosed in the edges of the canvas with which the outer cover or restraining
jacket is lined, so that the outer cover or restraining jacket is more easily sprung into
position on the rim R and can easily and quickly be detached' without any or little
exertion as the coiled wires allow the edges to extend and at the same time are
sufficiently stable to retain the cover in position when the tyre is inflated with air or gas-
under pressure, as the air tube forces the edges of the cover against the edges
the rim as clearly shown on the drawings. Or the spring may be embedded or
inserted directly into the canvas or canvas and rubber of the edges of the outer cover
or restraining jacket without being first inserted into the tube B. In some cases we
may embed a wire or strip of flat spring steel coiled only at some portion or portions
in the tube or pipe B or in the edges of the outer cover in place of the continuous
coil.
of
The other portion of our invention consists in the use of two, three or more air or
gas tubes (by preference three) d d and d all of which are enclosed in the outer
cover A as shown at Figures 1 and 3 which is then secured to the rim in the manner
as herein before described. Each of these air tubes is provided with a separate valve,
the valve communicating with the tube d', the valve ft with the tube d, and the
valve with the tube d³ so that when the inflater which is provided with the three
connections, and 3, is operated an equal pressure of air is forced into each tube.
at one operation by the one inflater. The valves instead of passing through
separate holes in the rim may if desired pass through one opening. Should one of
these air tubes be punctured the other two will immediately swell out and take its
place thus enabling the wheel to be ridden without having to dismount and repair the

page_text: puncture. Or on the other hand the rider may dismount and attach the connections
of the inflater to the three valves and inflate the tyre without having to first ascertain
which air tube is punctured should the air tubes require reinflating.
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:
CLAIMS.
First. In pneumatic tyres securing the tyre on to the rim of the wheel by inserting
in the edges of the outer cover a coiled spring or springs in the manner substantially
as herein before described and as shown upon the accompanying sheet of drawings.
Second. In pneumatic tyres the use of two or more air tubes each being provided
with a separate valve so that an equal pressure of air is forced into each tube at one
operation from the one pump or inflater in the manner and for the purpose substan-
tially as hereinbefore described and as shown upon the accompanying sheet of
drawings.
Third. A pneumatic tyre having a spiral spring in each edge to hold it on the rim
in combination with two or more air tubes inflated from separate inlets substantially
as hereinbefore described and as shown upon the accompanying sheet of drawings.
Dated this 13th day of August 1897:
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicants.