An Improvement in Hollow Tyres of Wheels for Bicycles, Tricycles, or any other Vehicle, and Method of Fixing, also an Improved Air Valve for same.
Year: 1892

page_text: COMPLETE SPECIFICATION.
An Improvement in Hollow Tyres of Wheels for Bicycles, Tricycles,
or any other Vehicle, and Method of Fixing, also an Improved
Air Valve for same.
I ALBERT EDWARD PAYER of 28 Rendezvous Street Folkestone in the County
of Kent Builder and Contractor 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 improvements in that class of wheel tyres which are
formed hollow and inflated by hydrogen, air, or any other gas. The chief object
of my improvement being the application of metal air tubes inside hollow tyres
which said tubes may be formed of thin steel or brass or any other metal or alloy
which said tubes shall be made circular in section and made continuous around the
rim of any wheel. The thin steel or other metal forming the air tube to be lapped
and brazed together or made air tight by any other suitable means.
According to my invention the use of a metallic air tube would enable the
pneumatic tyre to be used ou heavy road vehicles as the metal would not chafe
through under the work which air tubes have to undertake as the metal could be
made of any suitable thickness according to the load the wheels would carry.
According to my invention in applying the metal air tube inside cycle tyres it is
intended to fill same under pressure with hydrogen gas which could not then escape
through the metal air tube which said hydrogen gas would make the tyre light in
weight and more elastic than any tyre at present in use and the said hydrogen gas
being many times more elastic than air would more than compensate for the
interference of metal air tubes with the speed of the tyre but the said tyre could
be inflated with air if required.
According to my invention the outside cover would be formed of india-rubber
and canvas and the edges of the said cover should fix itself into the rim of wheel
by cramping itself between the two edges of rim as shown in the accompanying
drawings but the said metal air tube may be fixed onto a wheel by any other
suitable method if required.
According to my invention an improved air valve is attached to the metal air
tubes of an improved construction which said valve shall allow the air to escape
when required and which said valve shall be fixed at an angle to the rim so as to
allow the air pump to work freely at the side of wheel away from the wire spokes.
In order that my invention may be fully understood I will proceed to describe
the drawings annexed but I do not limit myself to any thickness of material or any
measurement given. The drawings are simply to show the principle of the
invention.
In Fig. 2. 3. 6. 7. the letter D indicates the edge of double rim showing each
edge of the outside cover marked L fixed between the two edges of rim by means
of the pieces of metal marked K which may be made in any shape or section either
round or of any other form. The said pieces of metal indicated by K may be
continuous around the metal rim and formed in one piece or they may be made in
sections or in any number of picces as may be found desirable according to the
different shapes of the double edged rim. The said pieces of metal marked K may
also be .connected to either edge of the rim by means of rivets or any other
suitable arrangement or they may be made separate from the rim but held in their
place by means of rivets which shall be fixed across the two edges of the rim so as
to prevent the pieces of metal marked K from dropping out of their place.
Fig. 24 34, 64 74 shows the position of the various parts of the tyre as they
would appear when the outside cover was being removed from the metal rim of

page_text: wheel. To get the outside cover in the position shown the air would have to be
allowed to escape from the inner air tube.
In Fig. 1. 2. 3. 4. 5 the letter A indicates the steel air tube.
In Fig. 1. 2. 3. 4. 6. 7 the letter B indicates the outside covers showing the edges
of same marked L fixed into the rim by the different methods of cramping same.
In Fig. 1. 2. 3. 5. 6. 7. C indicates metal rim or felloe of the wheel.
In Fig. 4 C indicates the wood felloe of a heavy carriage wheel with the tyre
fixed thereto.
Fig. 5. shows a section of the air valve E indicates a brass nob which takes out
to connect air pump Findicates brass screw which moves the brass cylinder I
down to let out the air. The said brass cylinder I having a number of holes
drilled through the end of it nearest the inside of tyre H indicates body of air
valve indicates brass disk and india rubber washer J being forced against body
of air valve by the pressure inside the air tube stops the return of gas.
When
the hollow brass screw marked forces down the brass cylinder marked it
displaces from the body of valve the air then escapes through the holes in the
bottom of the brass cylinder and out through the hollow part of the air valve.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. A. hollow tyre in which an improved metal air tube shall be used which said
tube may be formed of thin steel or other metal substantially as herein before
described and illustrated in the accompanying drawings.
2. A hollow tyre in which an improved metal air tube shall be used which said
tube shall be covered by a layer of canvas and india rubber t protect it from
road wear substantially as described.
4
3. A hollow tyre in which an improved metal air tube shall based which said
tube shall be encased in an outer cover which said cover shall be ed to the metal
rim by cramping its two edges between the double edge of the me al rim of wheel
as hereinbefore described and illustrated in the accompanying dra ings.
4. A hollow tyre in which an improved metal air tube shall be used which said
tube may be inflated by hydrogen or other gas and which said metal air tube would
enable the pneumatic tyre to be used on heavy road vehicles without continual
failure as happeus in the use of india-rubber air tubes.
5. A hollow tyre in which an improved metal air tube shall be used which said
tube shall be fixed onto the rim of wheel by the different methods as hereinbefore
described and shewn in the accompanying drawings.
6. A. hollow tyre in which an improved metal air tube shall be used which said
tube shall have an improved air valve which said valve shall allow the air to
escape when required as hereinbefore described and illustrated in the accompanying
drawings.
16th January 1899
ALBERT EDWARD PAYER.