Improvements in Valves connected with the Inflation by Air of Pneumatic Tyres and the like.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Valves connected with the Inflation by Air of
Pneumatic Tyres and the like.
I, ASPLAN BELDAM, of The Lodge, Acton, London, W., Engineer, do hereby
declare the nature of this invention to be as follows:-
-
This invention has reference to valves through which pneumatic tyres are inflated
with air and deflated, and by which such air is held in.
The valve, according to the present invention, is constructed with a plurality,
that is, two or more holes or ways through its body or stem, and each of the ways
or holes is in connection with a tube of the tyre, that is to say, the tyre in con-
nection with which it is used has two or more tubes or parts, and these parts are
filled with or emptied of air through suitable ways or holes in the valve stem or
body; and it is so adapted and arranged that the several tubes or parts of which
the tyre is composed, can be filled simultaneously, or separately. These holes or
ways in the valve body are provided with small non-return or lift valves, the stems
of which preferably extend down to the lower end of the valve body. Thus each
tube of the tyre is complete in itself, and has no connection with the other or others,
so that in the case of one, say the outer tube, becoming punctured or leaky, it does
not affect any of the other tubes.
The stem or valve body is provided with a screwed end, and a cap, onto which,
say an ordinary cycle pneumatic pump can be screwed in the ordinary way; also
at the lower end, in some cases, it is formed of a separate part to the main body,
screwed thereon, and within which one or more of the side valves are placed and
work.
In the case of the application to a pneumatic tyre, having three tubes, namely,
an outer one on which the wheel runs, and two inner ones which fit in the rim of
the tyre, the valve body will have three holes up it, one of which extends into the
main outer tube, and two communicate with the side tubes. At the points of
communication the holes lead at right angles to the length of the body, and are
provided with nozzles to which the said side tubes are connected.
If it is desired to inflate one or two of the tubes at a pressure greater than the
other or others, this can be accomplished by introducing into the different holes
or air apertures, small plugs or stops, prior to attaching or screwing on the pump.
Under normal conditions, the several tubes of the tyre would be inflated with
air at equal pressure.
In some cases, the valve, according to this invention, is adapted to inflate tyres
containing or consisting of a single tube.
The valve may be made of metal, woodite, vulcanite, or other suitable material;
and the non-return or lift valves will also be made of the same or other suitable
material.
10.1 1
T11007

page_text: Improvements in Valves connected with the Inflation by Air of
Pneumatic Tyres and the like.
I, ASPLAN BELDAM, of The Lodge, Acton, London, W., Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention has reference to valves through which pneumatic tyres are inflated
with air and deflated, and by which such air is held in.
The valve, according to the present invention, is constructed with a plurality,
that is, two or more holes or ways through its body or stem, and each of the ways
or holes is in connection with a tube of the tyre, that is to say, the tyre, in con-
nection with which it is used, has two or more tubes, or parts, and these parts
are filled with, or emptied of, air through suitable ways or holes in the valve stem
or body; and it is so adapted and arranged that the several tubes or parts of which
the tyre is composed, can be filled simultaneously, or separately. These holes
or ways in the valve body are provided with small non-return or lift valves, the
stems of which, preferably, extend down to the lower end of the valve body. Thus
each tube of the tyre is complete in itself, and has no connection with the other
or others, so that, in the case of one, say the outer tube, becoming punctured or
leaky, it does not affect any of the other tubes.
The stem or valve body is provided with a screwed end, and a cap, onto which,
say, an ordinary cycle pneumatic pump can be screwed in the ordinary way; also at
the lower end, in some cases, it is formed of a separate part to the main body, screwed
thereon, and within which one or more of the side valves are placed and work.
In the case of the application to a pneumatic tyre, having three tubes, namely,
an outer one on which the wheel runs, and two inner ones, which fit in the rim of
the tyre, the valve body will have three holes up it, one of which extends into the
main outer tube, and two communicate with the side tubes. At the points of
communication, the holes lead at right angles to the length of the body, and are
provided with nozzles to which the said side tubes are connected.
If it is desired to inflate one or two of the tubes at a pressure greater than the
other or others, this can be accomplished by introducing into the different holes
or air apertures, small plugs or stops, prior to attaching or screwing on the pump.
Under normal conditions, the several tubes of the tyre would be inflated with air
at equal pressure.
In some cases, the valve, according to this invention, is adapted to inflate tyres
containing or consisting of a single tube.
The valve may be made of metal, woodite, vulcanite, or other suitable material;
and the non-return or lift valves will also be made of the same, or other suitable
material.
Examples of valves, according to this invention, are given in the accompanying
drawings, which shew the valve in several modified forms.
Referring, in the first instance, to Figure 1, the valve therein shewn is for
inflating a tyre having three tubes or tubular portions; and it is provided with
three ways, a, and b, b. The central way a would be used for inflating the main
or outer tube, constituting the tyre proper; and the ways 6 will serve to inflate the
tubular edges of the tyre, which rest or fit in the rim. Tyres of the character just
referred to are set forth in the application for Patent Nos. 24 and 4705 of 1897.
It will be seen that the two side air ways b branch off from the body e of the
valve; while the central one is carried vertically upwards. At the lower portion
of the body e, there is a base plug c, which is screwed onto the bottom of the

page_text: body; and is provided with a projecting screwed nipple c¹, onto which the inflating
pump is screwed; and it has through it a vertical hole a¹, and also a transverse
hole 6', leading from a¹, and communicating with the side air ways b. In the
lower portion of this base plug c, there is a valve a², the stem of which reaches
to the bottom of the hole a', and is there provided with a screw milled nut, a³,
the body of which fits into the nipple c¹, the sides of this nut being cut away to
allow air to pass from the pump into the tube a¹. At the top of the central stem,
the way a is provided wih a supplementary valve at, which is introduced from
the top, and held in position by a pin a5 across the tube which projects above the
valve.
Each of the sideways b is provided at its upper end with a valve 62; and these
valves, which are of the non-return or check type, are held in place by transverse
pins 63, passed through the projecting portion of the stems which stand above them.
The tubes or ways b are secured to the tyre tubes, which they serve to feed with air,
by means of milled nuts d, and check nuts d¹; the nuts & being connected up with
the tyre tubes by screwed studs secured to each of such tubes, and projecting
through the rim.
To inflate the tubes of the tyre, the cap el of the valve is screwed off the nipple c¹,
and the pump screwed on in the usual way; and when the pump is operated, the
air will be supplied through three passages or ways, a, b, b, and distributes itself,
according to the pressures therein. Then, if it is desired to further inflate the
side tubes of the tyre, this can be done by screwing the nut a³ onto the stem of the
valve a², which pulls this valve down onto its seat, and closes the way a; then
all the air has to pass by way of the ways b. Or, the reverse operation may be adopted,
if desired, namely, the inflation of the side tubes may be first effected by screwing
down the valve a²; and then the centre one may be inflated, by releasing this
valve, and allowing the air to pass up a.
In the modification shewn in Figure 2, the ways a, b, b, are all formed in a
vertical body e of the valve; and the air is distributed to the several tubes by the
vertical, and right and left hand branches, shewn in the body e, with which the
tubes will be connected, and made air tight. The lower porton of the valve con-
sists of a separate base plug c, with nipple c¹, for the air pump connection; and
the single air passage in this nipple branches out into three, as shewn. The two
outer of these branches b, are provided, in the body, at the lower part, with a
valve 62, of rubber or equivalent material, which prevents the return flow of air,
by the side tubes or ways b; and the central way a is provided with a non-return
valve a, as in Figure 1.
In the modification shewn in Figure 3, the nipple c¹ of the base plug c, is provided
with three apertures, as shewn, the two outer ones of which are controlled by the
rubber or flap valve 62, which lies within the body of the plug c, and round the
central tube of the central way a; and then there are additional valves b* at the
upper parts of the ways b, to check the return flow, from which point the air is
led into the side air tubes by inclined branches, as shewn. The central air way a
is carried up beyond these points as shewn, and, in its upper end, the check or
non-return valve a is fitted. The part of the tube or way a, above the point x,
may be of either metal or rubber.
The operation of this valve will be similar to the others.
In the modification shewn in Figure 4, the pump nipple c¹ is provided with three
ways, and the valves 68 of the side tubes 6 are arranged in this base portion; the
valve at being disposed in the upper end of the way a, as in the fromer modification.
Otherwise than in these respects, the valve is similar to the others shewn, more
especially that shewn in Figure 2.
A modification of the valve shewn in Figure 4 is given in Figure 5. The
modification consists in arranging the valves 62 in the body of the base plug c,
and not in the nipple c¹; and of having a single passage only in the pump nipple.
In other respects it is substantially the same as the valve shewn in Figure 4.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A valve for inflating tyres with two or more tubes or tubular portions, com-
prising a body having two or more air ways, each air way having a non-return or
check valve thereon, and all being supplied through a single nipple to which the
air pump is attached; substantially as herein set forth.
2. An air valve for inflating pneumatic tyres having two or more separate tubes
or tubular portions, comprising a body, with separate air ways in it, and valves,
and having a base plug at the lower part connected with the body, and a nipple
to connect up with the air pump, substantially as set forth with reference to and
shewn in the drawings.
3. The several triplicate air way valves having parts arranged, constructed, and
adapted to operate particularly as set forth with reference to, and shewn in the
several figures of the drawings, respectively, for the purposes specified.
Dated this 20th day of November 1897.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.