Improvements in Valves for Use in connection with Pneumatic Tyres, and for other purposes.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 22nd Feb., 1897-Accepted, 21st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Valves for Use in connection with Pneumatic
Tyres, and for other purposes.
We, THOMAS FREDERICK EDWARDS, of 69 Sherrard Road, Forest Gate, in
the County of Essex, Manager and Secretary, and FRANCIS ERNEST SWANN, of
Wood Green, in the County of Middlesex, Gentleman, do hereby declare the
nature of this invention to be as follows:-
This invention relates to valves chiefly intended for use in connection with
pneumatic tyres of the wheels of cycles and other road vehicles for inflating
and deflating such tyres, but the said valves are applicable also for other
purposes.
A valve constructed according to this invention comprises a tubular body
adapted to be secured in any ordinary or suitable manner to the rim of the
wheel, a conical valve adapted to slide to and fro in the tubular body, and a
conical valve seat formed by a piece which is screwed to the outer end of
the tubular body or is permanently or detachably fixed thereto by solder or other
means. The outer end of the conical seat piece is constructed to receive a screw
cap or other closing device, and the said seat piece is pierced with a central
opening to allow of inflating and deflating the tyre.
We sometimes rely entirely upon the conical faces of the valve and its seat to
make a tight joint and at other times we provide in the valve a suitable piece of
packing material to bear against the end of the valve seat immediately around the
aperture and thus ensure a perfect joint. We may use leather, india rubber,
vulcanite or other suitable material for this purpose. We preferably provide a
few small holes in the side of the conical part of the valve to allow of the free
passage of the air when inflating or deflating the tyre. Although the valve will
work quite well without any other support behind it to keep it to its seat than the
air pressure in the tyre we prefer to further support the valve and make it more
certain in action by means of a spring which is arranged to press the valve to its
seat. We may make the various parts of the valve of metal or of
material.
Deted this 21st das of May 1896
any
other suitable
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.
Improvements in Valves for Use in connection with Pneumatic
Tyres, and for other purposes.
We, THOMAS FREDERICK EDWARDS, of 69 Sherrard Road, Forest Gate, in the
County of Essex, Manager and Secretary, and FRANCIS ERNEST SWANN, of
Wood Green, in the County of Middlesex, Gentleman, 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 valves chiefly intended for use in inflating and

page_text: maintaining the air pressure in pneumatic tyres of the wheels of cycles and other
road vehicles, but the said valves are applicable also for other purposes.
A valve constructed according to our invention comprises a tubular body adapted
to be secured in any ordinary or suitable manner to the rim of the wheel, a conical
or other suitable valve adapted to slide to and fro in the tubular body or case,
and a correspondingly shaped valve seat formed by a piece which is firmly attached
to the outer end of the tubular body. The outer end of the conical seat piece is
constructed to receive a screw cap or other closing device, and the said seat piece
. is pierced with a central opening to allow of the inflation and deflation of
the tyre.
We preferably face the valve with suitable material that bears against the end
of the valve seat immediately around the aperture and ensures a perfect joint.
We may use leather, india rubber, vulcanite or other suitable material for this
purpose, but we prefer to use a material known as "Delaware fibre" made from
vegetable fibres by the action of chemicals and a vulcanizing process together
with heavy rolling and pressing. This material is tough and hard somewhat
resembling horn and possessing great strength and density combined with lightness.
We preferably provide one or more grooves or holes at the side of the valve to
allow of the free passage of the air when inflating or deflating the tyre. Although
the valve will work quite well without any other support behind it to keep it to its
seat than that afforded by the air pressure in the tyre we prefer to further support
the valve and make it more certain and rapid in action by means of a spring
which is arranged to press the valve to its seat. We may make the various
parts of the valve of metal or of any other suitable material.
In order that our invention may be more fully understood we will describe the
same with reference to the accompanying drawing which is a longitudinal section
of a valve constructed in accordance with this invention and adapted for use as a
non-return pneumatic tyre valve.
A is the tubular valve case or body provided with the usual or any suitable
means for attaching it to the rim of a wheel and to the air chamber of a pneumatic
tyre. B is the valve provided with a conical central recess C in which is placed
a piece of suitable packing material D to form the valve face and ensure a
tight closure against the valve seat H. F is a spring serving to press the valve
against its seat; the end of the spring may bear in a recess in the back of the
valve. The valve is of cylindrical form externally and is guided by the case A ;
a groove is formed in the valve to permit the passage of air when the tyre is being
inflated or deflated.
The conical valve seat H is formed upon the cap or cover I soldered or
otherwise securely fastened upon the outer end of the valve case A. This cover has
a nipple J formed upon it adapted for attachment to an air pump or inflator, and
centrally through the nipple J and valve seat H a hole K extends, through
which the air passes on its way to or from the tyre. The end of the
nipple is closed by a dust cap in the usual manner when the inflator is not
attached.
When the tyre is required to be deflated it is only necessary to insert a wire
into the passage K and so press the valve B from its seat to allow the air to
escape by way of the said passage K and in the case of large tyres such as
for carriages, suitable means may also be provided for opening the valve when
inflating.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A sliding valve having an air groove or hole and a conical or other recess
adapted to fit upon a correspondingly shaped seat and provided with an interposed
packing piece, substantially as and for the purposes specified.

page_text: 2. The valve constructed substantially as and for the purpose described with.
reference to the accompanying drawings.
Dated this 20th day of February 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.