An Improved Pneumatic Tyre for Cycles and other Vehicles.
Year: 1897

page_text: Date of Application, 29th Sept., 1897
PROVISIONAL SPECIFICATION.
An Improved Pneumatic Tyre for Cycles and other Vehicles.
I, ALEXANDER MACAULEY, Hairdresser, of 4, Edward Street, Portadown, County
Armagh, Ireland, do solemnly and sincerely declare the nature of this invention
to be as follows.
This invention relates to pneumatic tyres for cycles and other vehicles and it
has for its object to provide an improved construction of same.
In carrying out my invention I fit to the periphery of the rim by means of
cement or otherwise a series of hollow pieces of india rubber preferably hemi-
spherical in shape. Each of these hemi-spheres is capable of inflation by means
of air or other fluid which is admitted thereto through suitable small non-return
valves situated on the inner surface of and passing through the rim. These valves
are so constructed to only admit the air into the hemi-spheres.
Fitted round the inside of the rim is a preferably detachable metal tube of
a D, C, or other suitable shape in section which encloses all the valves. This tube
is made air-tight preferably by means of a strip of india rubber or the like fitted
between its flat surfaces and the inner surface of the rim. Au air valve is fitted
to the tube by means of which all the hemi-spheres may be inflated simultaneously.
An outer cover is preferably fixed.in any suitable manner to the rim and the
hemi-spheres are thus enclosed in the same way as with an ordinary air tube.
With this construction of tyre should one or more of the hemi-spheres be punc-
tured they may be readily repaired or replaced by new ones after first detaching
the metal tube and removing the outer cover.
A further advantage is that should one or more of the hemi-spheres become
punctured the tyre is not rendered useless as only the hemi-spheres damaged are
deflated.
An Improved Pneumatic Tyre for Cycles and other Vehicles.
I, ALEXANDER MACAULEY, Hairdresser, of 4, Edward Street, Portadown, County
Armagh, Ireland, 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 pneumatic tyres for cycles and other vehicles and it
has for its object to provide an improved construction of same.

page_text: And in order that my said invention may be properly understood I have here-
unto appended an explanatory sheet of drawings whereon:-
Fig. 1 shows in section a portion of a bicycle wheel having my improved tyre
secured thereto.
Fig. 2 is a cross section on the line - Fig. 1.
On the drawings the same reference letters wherever repeated indicate the same
parts.
In carrying out my invention I fit to the periphery of the rim a, a series of
hollow pieces of india-rubber 6 which may be of the shape shown on the drawings.
Each of these hollow pieces constitutes a chamber which is capable of inflation by
means of air, or other fluid, admitted thereto through suitable small non-return
valves c situated on the inner surface of and passing through the rim a. One
non-return valve c is provided for the inflation of each separate chamber.
Fitted round the inside of the rim is a detachable tube d made of a "D" "C"
or other suitable shape, in section and which communicates with all the valves c.
This tube is made air-tight preferably by means of a strip of india-rubber or the
like fitted between its flat surface e and the inner surface f of the rim a. An
ordinary inflating valve g is fitted to the tube d and by means of which all the
chambers can be inflated simultaneously.
An outer cover h is preferably fixed by means of wires or cords, or in any other
suitable and well known manner, to the rim and the chambers are thus enclosed
in the same way as with an ordinary air tube.
The rim, as shown, is made with turned in edges which form grooves for the
reception of the edges of the cover so that when the chambers are inflated they will
press the edges of the cover into the aforesaid grooves thus securely holding the
tyre on to the rim. As will be readily understood when air is pumped through
the valve g, the chambers 6 are inflated simultaneously by means of the tube d
and valves c.
When the tube is removed the valves c are exposed and the chambers b can be
deflated in order to remove the cover so as to repair punctures.
With this construction of tyre should one or more of the chambers be punctured
they may be readily repaired or replaced by first removing the outer cover h and
then detaching the tube d.
A further advantage is that should one or more of the chambers be punctured
the tyre is not rendered useless as only the chamber or chambers damaged are
deflated.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
consider novel and desire to claim is:
A pneumatic tyre for cycles and other vehicles comprising, in combination,
number of hollow chambers 6 and the means for inflating the chambers all substan-
tially as herein before described with reference to the drawings annexed.
Dated thin 90th day of Tuna 1808
Dated thin 08th
day o
af Tuna 1808
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.