An Improved Pneumatic Tyre for Carriage and other Wheels.
Year: 1896

page_text: Date of Application, 19th Sept., 1896
Complete Specification Left, 3rd June, 1897-Accepted, 3rd July, 1897
An Improved Pneumatic Tyre for Carriage and other Wheels.
I, JOHN ROBERTSON of 412-424 St. Vincent Street, Glasgow, Coach Builder, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improved pneumatic tyre for carriage and other
wheels.
In accordance with my invention I dispense with the ordinary air tube which is
placed round the rim of the wheel and in lieu thereof I place round the rim of the
wheel a series of hollow indiarubber balls which are filled with air. The said
balls are protected by means of a thick outer indiarubber or other covering which
covering may be secured to the rim of the wheel in any convenient manner such as
by moulding or cutting two edges of the strip, which constitutes the cover, with a
thickened or catch portion, which portion is gripped within a correspondingly shaped
section of the rim of the wheel.
It will be seen that the pneumatic action is effected by means of the said balls
which surround the rim of the wheel and which are within the said covering. The
said balls are protected from any liability to puncture by means of the thick outer
case or covering but even should any puncturing occur the damage if confined to the
one ball will not affect the rest of the balls and therefore the pneumatic action of the
wheels will not be appreciably affected.
I prefer to keep each ball in a fixed position by securing the balls by cement or
otherwise to a rubber or other strip which goes round the centre of the rim of the
wheel.
In that case the said strip acts as a filling piece between the two edges of the
covering.
In lieu of making the air containers as balls that is to say of a round shape they
may be made of any other suitable shape.
I, JOHN ROBERTSON, of 412-424 St. Vincent Street, Glasgow, Coach Builder, 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 state-
ment-
This invention relates to an improved pneumatic tyre for carriage and other wheels
and has for its object to provide a tyre which when in use will have the same action
and advantages as the ordinary tube inflated tyre but which will not be materially
Dine 1

page_text: affected if by any chance it should become punctured and which will be little or no
trouble to manipulate.
In accordance with my invention I dispense with the ordinary air tube which is
placed round the rim of the wheel and in lieu thereof I place round the rim of the
wheel a series of hollow indiarubber balls which are filled with air. The said balls
are protected by means of a thick outer indiarubber or other covering which
covering may be secured to the rim of the wheel in any convenient manner such as
by moulding or cutting two edges of the strip, which constitutes the cover, with a
thickened or catch portion, which portion is gripped within a correspondingly shaped
section of the rim of the wheel.
It will be seen that the pneumatic action is effected by means of the said balls
which surround the rim of the wheel and which are within the said covering. The
said balls are protected from any liability to puncture by means of the thick outer
case or covering but even should any puncturing occur the damage if confined to the
-one ball will not affect the rest of the balls and therefore the pneumatic action of the
wheels will not be appreciably affected.
The accompanying sheet of drawings in which Fig. 1 is a cross section and Fig. 2
a longitudinal section illustrates one method of carrying my invention into effect.
A are the hollow indiarubber balls which are filled with air and arranged closely
together round the rim of the wheel. B is the outer indiarubber or other covering
which completely encases the balls A and is of such a thickness as to make it almost
impossible for the balls to become punctured. C, C are the portions formed by
moulding or cutting, and adapted to be clinched by the rim D of the wheel E
whereby the cover is securely held in position.
The ends of the tyre may be secured by means of T bolts or other similar means
and if desired two three or more T bolts may be placed at intervals around the wheel
-to further secure the tyre.
I prefer, when the air balls are arranged at a short distance apart in place of as
shewn, to keep each ball in a fixed position by securing the balls by cement or
otherwise to a rubber or other strip which goes round the centre of the rim of the
. wheel.
In that case the said strip acts as a filling piece between the two edges of the
covering.
In lieu of making the air containers as balls that is to say of a round shape they
may be made of any other suitable shape; the aperture in the cover being shaped to
.correspond.
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 :-
The improved pneumatic ball tyre for carriage and other wheels, substantially as
hereinbefore described and shewn in the accompanying drawings.
1000
Dated
the 2nd day of June 1907.
JOHNSONS,
Applicant's Agents,
115, St. Vincent Street,
Glasgow.