An Improved Valve for Pneumatic Tyres.
Year: 1893

page_text: Date of Application, 30th Aug., 1893-Accepted, 30th Sept., 1893
COMPLETE SPECIFICATION.
An Improved Valve for Pneumatic Tyres.
I, EMILE JOSEPH VAUZELLE, of 21 Boulevard Poissonnière Paris, in the
Republic of France, 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 statement :-
My invention relates to a valve for use in inflating the air chambers of pneumatic
tyres for wheels of velocipedes and other vehicles, the said valve being characterized
by the fact that neither a spring nor any fragile part is used in its construction.
This valve consists substantially of a tube adapted to be lengthened or shortened
at will and acting in combination with a cone connected to a ball by means of a rod
traversing the entire length of the said valve.
In order that its construction and mode of action may be properly understood I
will proceed to describe the valve with reference to the accompanying drawing in
which it is represented by way of example.
Figure 1 is an elevation of the valve provided with a washer and nut designed for
fixing it upon the air chamber.
Figure 2 is a section through the axis showing the several parts constituting the
valve.
Figure 3 is a plan.
The body A of the valve is screw threaded the whole of its length; it has a
conical flange a, a central cylindrical hole terminating at the flanged end in a
conical cavity a¹ and at the other end in an interiorly screw-threaded recess of
larger diameter. In to this recess is screwed a socket B having a milled
collar b.
In the conical cavity a¹ is arranged the cone C made of compressible material
and connected by a rod c to a ball c' held in a spherical cavity provided in the
lower part of the socket B.
The whole of the valve thus constituted is fixed to the air chamber by means of
the nut D exerting pressure upon a washer d for ensuring the tightness of the
joint.
The introduction of air into the pneumatic tyre is effected by means of a pump.
The union of the latter is screwed upon the socket B which is at the same time
screwed into the body A thus uncovering the air admission orifice previously
closed by the ball e. The cone C being released can then rise under the pressure
of the air coming from the pump set in operation, and close again automatically;
its movement is limited by a pin e traversing the head of the valve body.
When the chamber has been inflated with air to the desired extent it is sufficient
to unscrew the union of the pump. This operation causes at the same time the
unscrewing of the socket B which, bearing against the ball c', causes the cone C to
be carried away through the intervention of the latter and the rod c in such a
manner that this cone, bearing upon its conical seat a', effects the hermetic closing
of the valve.
It will be understood that the above described valve may be made of any
desired materials, forms and dimensions, according to the use for which it is
designed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. In a valve for pneumatic tyres the combination of a cone C with a ball c¹
A ball is moved outwards

page_text: by means of a movable part or socket B, and released on the ball being liberated
again, substantially as herein described with reference to the drawing.
Second. In a valve for pneumatic tyres the combination with its body A of a
movable part or socket B which during the connection of an air compression
pump to the same liberates the ball c and the cone C, and which during the
disconnection of the said pump forces the ball outwards and the cone upon its
seat, substantially as herein described with reference to the drawing.
Dated this 30th day of August 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.