An Improved Valve for Pneumatic Tyres and All Kinds of Inflating Articles.
Year: 1896

page_text: Date of Application, 12th May, 1896
Complete Specification Left, 12th Feb., 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
An Improved Valve for Pneumatic Tyres and All Kinds of Inflating
Articles.
We, FREDERICK SAMUEL BELLHOUSE of 23, Lever Street, Manchester,
Engineer, GEORGE RATCLIFFE BELLHOUSE of Chief Fire Station, The Priory,
Birmingham, in the County of Warwick, Gentleman, and FRANCIS ROWLAND
CLARKE of Grange Avenue, Heaton Chapel, Lancashire, Mechanic, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved valve for pneumatic tyres and all kinds of
inflating articles such, for instance, as footballs, air-beds, pillows, seats, and the
like, and the object of the invention is a valve simple in its construction, positive
in its action, inexpensive in its production, extremely light, and both durable and
flexible. One of the essential features of our improved valve is the absence of
any metallic parts, such as in valves as usually constructed, therefore little or no
fitting is requisite for its adaptation to the articles for which it is designed.
The valve consists essentially of an envelope-like body part composed of india
rubber, canvas, leather, or other suitable flexible material, and a tubular stem part,
the former part adapted to be contained within the interior of the inflating article,
and the latter part to extend through the walls of the body of the said article, and
which said stem or tubular part is fitted at its end with an air pump connection of
any suitable kind. The body of the valve is constructed of two suitable shaped
halves of thin rubber, leather, canvas, or other suitable material, placed side by
side and connected together all round their edges perfectly air tight, with the
exception of a small portion of the same which is left open to form an air inlet.
Connected air tight to one part of the thin envelope-like body part is the tube or
stem, as aforesaid, to which the air pump is attached when air is being forced
through the valve.
In placing the valve in position within a pneumatic tyre, that part of the body
which is left open to form an inlet and outlet for the air extends inwards of the
other part, and when air is pumped through the same the body part is somewhat
dilated and the opening within the walls of the same forced open, through which the
air enters into the air sack, but, immediately, the pressure of the inpumped air is
relieved, the internal pressure of the air in the sack acts upon the side walls of the
valve body, first near the throat, and then all over the surface, which effectually
prevents the return of the air pumped in by closing the inlet. To deflate the tyre
a rod plunger or its equivalent is inserted down the tubular neck and the side of the
valve body forced open, when the air can escape.
The body of the valve and the stem may be moulded in one piece, or built up
and attached by cementation, and the junction of the body with the tubular neck,
at a point where the same is connected to the air sack, may be suitably strengthened
f required.
As a further form I may construct the valve in one piece with the air sack and
fit thereto permanently a plug for the purpose of deflating the inflating article
when required.
Dated this 11th day of Mar 1806
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birminghaut,
Agents for Applicants.

page_text: An Improved Valve for Pneumatic Tyres and All Kinds of Inflating
Articles.
We, FREDERICK SAMUEL BELLHOUSE of 23, Lever Street, Manchester,
Merchant, GEORGE RATCLIFFE BELLHOUSE of Chief Fire Station, The Priory,
Birmingham in the County of Warwick, Engineer, and FRANCIS ROWLAND
CLARKE of Grange Avenue, Heaton Chapel, Lancashire Mechanic, do hereby
declare the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement :-
This invention relates to an improved valve for pneumatic tires and all kinds of
inflatable articles, such, for example, as footballs, air beds, air pillows, life buoys,
life belts, gas bags, and air seats, and has for its object a valve simple in its
construction, positive in its action, inexpensive in its production, extremely light,
and both durable and flexible. One of the essential features of the said improved
valve is the absence of metallic parts, such as in valves of usual construction;
therefore little or no fitting is requisite for its adaptation to the articles specified
and, consequently, its chances of getting out of order are reduced to a minimum.
The valve according to this invention consists essentially of an enclosed body
and a stem, the former somewhat resembling in its construction an envelope and
projecting into the interior of the inflatable article, whilst the stem part, as
aforesaid, which is made in one piece with the body and is hollow, extends outwards
through the walls of the inflatable article for connection to an air pump. This
enclosure and its stem is composed of flexible material such as india-rubber,
canvas, or leather, (the former for choice) and its build and disposition of air
passages is the gist of the invention; the same consisting of a thin triangular or
cone-like body part, having projecting from its base a tubular shank or part which
is in communication with the interior. The said triangular or cone-like body is
closed upon its side edges and base, leaving the interior hollow and in communication
with the hollow stem, as aforesaid, but the apex is left open, the disposition of
the same being one projecting more into the centre of the inflating article than the
base: the latter, at its junction with the hollow stem, being near the walls of the
inflatable article. The disposition of the open apex is practically one coincident
with the tubular stem.
In the accompanying sheet of drawings the invention is practically carried out,
Figs. 1 and 2 representing it applied to a pneumatic tire, the first named fig.
showing the tire in position upon a wheel rim, and the second named fig. the inuer
tube and valve separate. Fig. 3 represents a section of the combined valve aud
inuer tube with the inner faces of the valve walls silk-lined so as to prevent them
sticking. In these figs. the valve is shown moulded in one piece with the inner
tube, but in Figs. 4, 5, 6, and 7, a separate part valve is illustrated, designed to be
fitted to the inner tube by cementation, the first three of these figs. representing a
body having an outline the same as Figs. 1 and 2, (which somewhat resembles the
body of a bellows) whilst the body of Fig. 7 has an outline very much resembling
a pear.
The same letters of reference indicate like parts in the different figs.

page_text: The valve a, which is moulded in one piece with the inner tube b, is built up of
two parts a², a³, the first named a body part extending into the interior of the tire
or air chamber, and the last named a stem. The part a consists of two leaves or
thicknesses of rubber a', a', hermetically sealed face to face upon their boundary
edges a, a, leaving a hollow interior a³, the base a of which is in communication
with the tubular stem a³, as aforesaid, which extends outwards of the inner tube or
inflatable article, and the termination of which is screwed for connection to an
inflator. The outline of the body a² is bellows-like, and the apex is left open at c
for an air inlet and outlet to the interior c of the tire, but this particular outline is
not essential, the build of the part a being the chief feature.
It will be noticed that the body a² of the valve a is of a larger area at its base
or point of connection with the stem than it is at its inner projecting part and outlet
end, and that the said outlet end stands some distance away from the base and stem
junction, which is most important.
A metallic ferrule d is vulcanized to the inner tube b and to the stem a³ at their
junction with the valve body a³, to strengthen the attachment of the said inner tube
to a part of the rim e; (shown in Fig. 1) a Welch-Dunlop cover
forming the
connection and means of confining the inner tube to the rim. In Fig. 3 the inner
faces of the sides a, a, of the body a² are silk-lined or otherwise faced, or chalked
in manufacture, at h, h', as a protection against the said sides sticking together. In
Figs. 4 5 6 and 7 the construction of the valve is practically the same as in the
former case, with the exception that a flange j is provided for its rigid attachment
to the inflatable article.
In actual use the valve body a² operates somewhat similar to a bellows, its
particular build allowing it, when air is forced through its walls a, a³, to be
parted to give passage to the said air through the opening c into the interior of the
tire, but immediately the pressure of the pumped-in air is relieved the internal
pressure of the air in the inflatable article acts simultaneously upon the walls a³, a*,
first at the throat part m on account of its large area, which effectively chokes or
throttles the inlet at that particular point; the same actually taking place before
the last wave of air has passed through the inlet c, thus checking the return of the
pumped-in air and any leakage thereof until a hollow rod n or its equivalent, as
shown in Fig. 8, is inserted up the stem a³, and through the body of the valve to
again open its walls and inlet c. To enable deflation by the said rod it is necessary
to have the opening c coincident with the stem a³.
The application of this invention to inflatable articles other than pneumatic tires
differs in no essential respect to that described in the foregoing.
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.
First. A valve for pueumatic tires and other inflatable articles consisting of a
flexible enclosed envelope-like hollow body part a², and a tubular stem part a³,
the former having an air inlet hole c approximately opposite the said stem and
some distance therefrom, and being of a considerably larger area adjacent to its
junction with the part a³ than at the said inlet c, for the purpose substantially as
described.
Second. The combination with a pneumatic tire of a flexible valve having an
envelope-like hollow body a², and a stem as, the first named extending into the
interior of the tire and being built approximately a cone, and also having an
outlet e at its apex, and the last-named a hollow interior communicating with the
said hollow body and coincident with the inlet c, substantially as described in
Figs. 1 to 7.
Third. The combination of a flexible valve a², a³, as claimed in the preceeding
claims, and a tubular valve opening rod n for, the purpose substantially as described
and set forth.

page_text: Fourth. The general construction, fitting, and combination of the parts set forth
in Figs. 1 to 7.
Dated this 11th day of February 1897.
W. P. THOMPSON & Co.,
Of 11, Burlington Chambers, New Street, Birmingham,
Also at Liverpool, London, and Manchester,
Agents for the Applicants.