A New or Improved Valve for use with Pneumatic Tyres and the like.
Year: 1897

page_text: Date of Application, 26th Oct., 1897
Complete Specification Left, 16th May, 1898-Accepted, 9th July, 1898
A New or Improved Valve for use with Pneumatic Tyres and
the like.
I, OWEN JAMES BROWN, of 2, Bramley Street, Manchester, Watch Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved valve for use with pneumatic tyres and
the like, and its object is to provide a valve which will allow the tyre to be easily
inflated without any danger of the air escaping.
In carrying out my invention I employ a stem screw threaded externally and
fixed in the usual manner to the tyre. This stem is provided with small screwed
extension at its end adapted to receive a cap when the valve is closed, and to
receive the end of the pump. Within the stem a sníall tube is fitted, which is
placed loosely in position and is adapted to slide up and down in the top of the
stem. It may be prevented from passing completely into the stem by means of
an enlargement or head which meets the top of the screwed extension. The lower
part of this tube or slide is concave or hollowed out, and a small rubber ball is
placed within the stem which is adapted to fit into the end of the slide.
lower part of the stem a small internal grating is provided which may be screwed
in place, and prevents the ball dropping through into the tyre. This grating
can be detached and the pump then inserted in place.
At the
The slide or tube is provided with small openings at the sides, both at the upper
and lower end, and the lower end is formed with a small circular groove, which
is adapted to carry a rubber ring. This rubber ring bears against the top of the
stem at the inside when the slide is in its top position. When the tyre is inflated
the pump and slide are forced up to the top of the stem, and the opening at the
bottom of the slide is closed by the ball which is placed in the cup like extremity.
The side openings at the lower end of the stem are then situated within the
screwed extension on the stem, and no air can escape through them, the rubber
ring closing all communication.
When the tyre is being inflated the slide is pressed in and the air passes through
the apertures into the interior of the valve. On removing the pump the pressure
of air inside will force the slide out and the valve will be closed in the manner
above described.
To deflate the tyre the slide is pressed in with the finger, and the air can then
escape through the openings at the sides deflating the tyre in a rapid manner.
During deflation the ball is kept in its position at the mouth of the slide, but
when all the air is exhausted so that there is no pressure at the back of the ball
the latter will fall on to the grating.
17.
1
1007

page_text: A New or Improved Valve for use in Pneumatic Tyres and
the like.
I, OWEN JAMES BROWN, of 2, Bramley Street, Manchester, Watch Manufacturer,
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 follow-
ing statement:
This invention relates to an improved valve for use with pneumatic tyres and
the like, and its object is to provide a valve which will allow the tyre to be easily
inflated without any danger of the air escaping.
In order to more clearly describe this invention reference is had to the accom-
panying drawing in which Fig. 1 is a section of a valve constructed according
to this invention, and to an enlarged scale, Fig. 2 is a similar view showing the
method of operating the valve to deflate the tyre. The stem a is screw threaded
externally, and fixed by means of the extension 6 and nut c to the tyre in the
usual manner. The stem a is provided with a similar screwed extension a¹ at
its end and adapted to receive a cap e when the valve is closed, or to receive the
end of the pump while the tyre is being inflated in a manner well understood.
The tube f is fitted within the stem a¹ and is placed loosely in position so that
it is capable of sliding up and down to a certain extent. The lower end f¹ of this
sliding tube f is concave or hollowed out and a small rubber ball g is placed within the
stem a and is adapted to fit in the said concave or hollowed out end f¹ of the
sliding tube f. The end f2 of the sliding tube f, is somewhat enlarged to prevent
sliding entirely into or out of the stem a.
Within the lower portion of the stem a an internal grating his fitted. A con-
venient means for attaching this grating is by forming it upon a casing h¹ having
at its lower end a screwed ring ha adapted to screw into the lower end of the
stem a. Any other suitable means for securing the grating h in position, may,
however, be employed without departing from this invention. Openings f³ f
are formed in the sliding tube f and a rubber ring i is arranged in a recess upon
the said tube f, so as to ensure an air tight fitting thereof. This ring bears
against the interior surface of the stem a as shown when the sliding tube f is in
its top position. When it is desired to inflate the tyre, the pump is fitted upon the
extension a¹ and the pump is operated to force air into the tyre in the usual
- manner. As soon as the pumping ceases the ball g is forced up by the air pressure
into the concave or hollowed out end f¹ and the ball and tube are forced to the
upper position. The openings f* at the lower end of the tube f are then situated
within the extension a¹ and no air can escape through them, the rubber ring i
closing all communication. The pump can then be removed and it will be readily
understood that the valve is entirely closed.
To deflate the tyre, the tube f is pressed inwards with the finger as shown in
Fig. 2, and air can then escape through the openings f3 f.
During deflation the ball is kept in the end f of the tube f until there is
no pressure within the tyre, when it will fall on to the grating h.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
(1) In a valve for pneumatic tyres, a stem adapted to be attached to the tyre
and having upon its upper end a screwed extension to which the pump or cap
is attached, a tube within said extension, and having its lower end concaved or

page_text: hollowed out, a rubber ball adapted to fit within said concave or hollowed out
end, openings towards either end of said sliding tube and a grating secured within
the stem, substantially as and for the purposes specified.
(2) In a valve for pneumatic tyres, a stem a adapted to be secured to the
tyre and having an extension a', tube f adapted to slide within said extension a¹
its end f being concaved or hollowed out, ball g which can fit within the end f¹
of the tube f, grating / fitted within the stem a, openings f³ f* formed in the
sliding tube f, and rubber ring i substantially as described and for the purposes
specified.
(3) In a valve for pneumatic tyres, stem a, extension a¹, lower extension b,
nut c, cap e, tube f having concave or hollowed out end f¹ and enlarged end fa,
openings f³, f, rubber ball g, grating hand rubber ring i all arranged and
operating substantially as described with reference to the drawings.
Dated this 16th day of May 1898.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.