An Improved Air Tube for Pneumatic Tyres.
Year: 1897

page_text: Date of Application, 11th Nov., 1897-Accepted, 29th Jan., 1898
COMPLETE SPECIFICATION.
An Improved Air Tube for Pneumatic Tyres.
We, HENRY GARDNER, of "Woodside," Stepney Road, Scarboro', Warehouseman,
and GEORGE GARDNER, of 1, Pine Road, Cricklewood, London, N.W., Warehouse-
man, 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, reference being had to the accompanying drawings and to the
letters and figures marked thereon, that is to say:-
This invention relates to an improved air tube for use with pneumatic tyres for
cycles, and like vehicles, and it has for its object to provide an air tube which can
be quickly removed from the tyre, for purposes of repair, or otherwise, without it
being necessary to take off the wheels of the machine, as is now the case.
To render our invention readily understood, we will describe the same fully
with reference to the annexed drawings, in which:
Fig. 1 is an exterior view, partly in section, of our improved air tube in its
unfolded condition, and
Fig. 2 a like view, but shewing it as it would appear when inserted in the tyre,
and closed.
For the purpose of our invention, the air tube a, which may be made as usual
of rubber, or other suitable composition, has one of its ends, b, closed air tight,
while near its other end c there is provided a suitably shaped closing piece d.
This piece d is inserted and cemented in the tube at a distance, say of 4 to 5 inches,
from the end c, so leaving an open space or cup c¹ between it and the mouth of the
tube, the purpose of which is hereinafter mentioned. The portion of the tube
comprised between b and d is that which is inflated with air through the valve e,
in the usual manner.
The tube thus formed is introduced into the tyre, and its end b is inserted into
the space or cup c¹, at the end c, as shewn in Fig. 2. It is then inflated and a
firm connection is established without the use of extraneous means.
The tube is made of such a length as to suit the circumference of the wheel
and to allow for the insertion of the end b into the open space or cup c¹.
It will thus be obvious that with this improved air tube, it can be entirely removed
from the tyre, for purposes of repair, or otherwise, without removing the wheel.
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:-
1. An air tube, for pneumatic tyres, having one end closed air tight and the
other provided, at a convenient distance in the length of such tube, with a closing
piece, the open space or cup beyond said piece being adapted to receive the closed
end, substantially as and for the purpose described.

page_text: 2. The combination with a pneumatic tyre for the wheels of cycles and like
vehicles, of an air tube constructed substantially as above claimed.
Dated this 11th day of November 1897.
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 5A, Market Street, Nottingham,
Agent for the Applicants.