An Improved Valve for Inflating Pneumatic Tyres for Cycles or other Vehicles, and for other purposes of the like kind.
Year: 1890

page_text: Date of Application. 11th July, 1890
Complete Specification Left, 5th Nov.. 1890-Accepted, 6th. Dec.,
1890
PROVISIONAL SPECIFICATION.
An Improved Valve for Inflating Pneumatic Tyres for Cycles or
other Vehicles, and for other purposes of the like kind.
I, WILLIAM THOMAS NEWCOMBE, of 44, Grange Road West, Middlesbrough-on-
Tees, in the County of York, Accountant, do hereby declare the nature of this
invention to be as follows:-
My invention relates more especially to the valves used for inflating with air the
pneumatic tyres used for the wheels of cycles, and it has for its object a novel
form of such valves by which they are very simple, easily adjusted, and not liable
to get out of order, whilst the escape of air through them is completely prevented.
The body of the improved valve is made in two parts, that is to say, a short
nipple attached to the tyre of the cycle the hollow pneumatic tyre of which is to be
inflated, and a cap or cover which is screwed upon the outer end of the nipple.
The nipple consists of a short tube having a flange of suitable size and shape at
one end by which it can be fixed on the inside of the cycle wheel metal tyre, the
joint between them being made airtight, and the nipple communicating with the
interior of the pneumatic tyre.
Or instead of having a flange, the nipple inay be screwed into or otherwise fixed
to the tyre.
The other end of the nipple is screwed outside to receive the cap, and inside it at
a convenient part of its length is formed or fixed a transverse perforated plate,
having preferably a rectangular hole through it sufficiently large to allow the air to
pass through it but preventing the valve itself from passing.
The cap is enlarged at one end to screw upon the end of the nipple, its other
end being bent round preferably at right angles. Through the cap a small central
hole passes the inner end of which forms a seat for a ball or valve of metal or other
suitable material, such as india rubber, vulcanite, or ebonite, but preferably of india
rubber.
The outer end of the curved cap is screwed to receive a small plug or cap, which
can be screwed up against a washer or flange to make an airtight joint or can be
easily removed when required.
•
By means of the improved valve, the pneumatic tyre can be readily inflated to
the desired extent, the plug or cap being first removed, and an air pump being
fitted in its place.
On the air being pumped in, it lifts the ball from its seat, and against the
perforated plate, whilst the air passes by it into the tyre. The valve falls back
into its seat and makes an airtight joint as soon as the pump ceases to force the
air in.
When the pneumatic tyre is sufficiently inflated, the pump is removed and the
plug or cap, screwed into its place, keeping all dirt from the valve and preventing
any escape of air..
The improved valve may be used for other similar purposes as well as for the
inflation of pneumatic tyres, such for instance as a valve for gases, steam, or any
other volatile substances or liquids.
It may be placed in any desired position and its shape, proportions, and the
materials of which it is made may be varied more or less according to the conditions
and purpose for which it is to be used.
Dated Liis 11th day of a my
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Valve for Inflating Pneumatic Tyres for Cycles or
other Vehicles, and for other purposes of the like kind.
I, WILLIAM THOMAS NEWCOMBE, of 44, Grange Road West, Middlesbrough-on-
Tees, in the County of York, Accountant, 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 and accompanying
drawing that is to say :--
My invention relates more especially to the valves used for the purpose of inflating
with air, and retaining such air in, the pneumatic tyres used for the wheels of
bicycles, tricyles, and other vehicles. It has for its object a novel form of such
valves and the parts connected with them by which they are very simple, easily
adjusted, and free from liability to get out of order, as compared with the valves for
the said purpose heretofore ordinarily used, whilst the escape of air through them is
· completely prevented.
In the accompanying drawing, which
in illustration of iny invention, Figure 1
is a transverse section through an improved valve and the parts connected with it.
Figure 2 is a plan and Figure 2* an end view of the same. The body or case of the
improved valve is made in two parts, that is to say a short nipple attached to the
inner rim of the wheel the hollow pneumatic tyre of which is to be inflated, and a
cap or cover b which is screwed upon the outer end of the nipple a.
The nipple a
consists of a short tube having a flange al of suitable size and shape by which it can
be fixed by screws or equivalent means upon the inside of the metal rim of the
wheel, the joint between them being made airtight, and the nipple communicating
with the interior of the hollow pneumatic tyre
Or, instead of having a flange, the nipple a may be screwed into or otherwise fixed
to the tyre.
The other end of the nipple is screwed to receive the cap b, and inside it at a
convenient part of its length is formed or fixed a transverse perforated plate, grating
or support which serves as a guard to prevent the valve c from rising too high
from its seat, but at the same time allows the air to pass through the nipple when
the valve is so raised.
The cap 6 is screwed upon the outer end of the nipple « its other end being bent
round at or about at right angles, and through it passes a small central hole y, the
inner end of which forms a seat for a small ball valve c of metal or other suitable
material such as india rubber, vulcanite, or ebonite. The outer end of the cap bis
screwed to receive a plug or cap d which can be screwed up against a washer or
flange e so as to make a perfectly airtight joint, but can be easily unscrewed and
removed when desired.
By means of the improved device, the pneumatic tyre can be readily inflated with
air to the required extent, the plug or cap d being first unscrewed and an air-pump
or other suitable forcing apparatus being fitted in its place. On the air being forced
in, it lifts the ball valve c from its seat, whilst the air passes by it into the hollow
tyre. The valve falls back into its seat and makes an airtight joint as soon as the
pump ceases to force air in.
When the pneumatic tyre is sufficiently inflated, the
pump is removed and the plug or cap d'is screwed into its place, keeping all dirt
from the valve and preventing any escape of air.
My improved device may be varied more or less in its form and construction and
in the method of attaching it to the rim of the wheel.
In Figure 3 it is shewn applied to a wheel having a hollow india rubber pneumatic
tyre. a is the nipple, having a flange e at its inner end and screwed at its outer end.
This nipple is introduced into the hollow tyre f and its screwed end passed out
through a hole in the latter and through the metal tyre a soft washer / being
arranged under the flange e and a similar washer i being fitted over the outer screwed
end of the nipple. is a metal washer, preferably square, which is screwed against

page_text: the washer i, and b is the cap which is screwed upon the end of the nipple as in the
arrangement already described, (preferably with the intervention of another soft
washer between its flange and the washer k). The part of the nipple a which passes
through the hollow tyre f and the metal ring is preferably made square in section
(as shewn in Figure 5), the hole through which it passes being made of corresponding
shape so that the nipple cannot turn round. The end of the nipple which forms a
guard for the ball valve c is provided with a number of small holes through it (as
shewn in Figures 4 and 5 at /) for the passage of the air. is a screw plug which
can be reinoved for the purpose of allowing the air to escape from the pneumatic
tyre when required. Its head is screwed up against a soft washer m.
Another modification is shewn in Figure 6, in which n is an india rubber tube
passing through a hole in the hollow tyre f and the metal rim or tyre g, and having
external and internal flanges which may be cemented to the tyres.
The nipple a is provided with a corresponding flange, which may be circular,
square, or of other convenient shape, and it is fixed by small screws passing through
holes in the flange (shewn in Figure 7) and screwed into the metal tyre or rim g.
The guard for the ball valve may consist of a pin or pins or bars across the bore.
of the nipple, instead of holes through the end of the latter.
In order that the outer flange of the india rubber tube may be passed through
the hole in the tyres, the end of the tube may be made without a flange but of
additional length, so that its end may be cut or split into strips which are then
spread out to form a flange, a packing washer being added if required to ensure an
airtight joint. Or a flange may be used upon the tube so thin that it can be passed
through the hole, additional thicknesses being added outside to form a sufficiently
thick flange. By this method of arrangement, the improved device is entirely
outside the hollow tyre and metal rim, to which latter it is attached by screws,
whilst in the first described arrangement it could not be removed without opening
the hollow tyre to remove the flange on the nipple, but on the other hand the
metal tyre is not weakened by the holes for the screws, and the whole arrangement
is very firm and secure.
Where screws are used, metal plates or pieces may be brazed upon the metal rim,
so as to strengthen the latter and afford more secure hold for the screws.
The outer curved piece or cap b provided with an airtight plug or cap d, may be
screwed upon or attached to the nipple of the valve ordinarily heretofore used.
This arrangement is illustrated in Figure 8, in which the end of the nipple a is
inserted into the projecting tube of the ordinary valve to which it is attached by
binding it with wire or other means. The outer end of the nipple is provided with
the screw plug d and soft washer e. In this arrangement if the ordinary valve
should fail the air is still retained in the tyre.
My improved device may be used for other purposes as well as for the inflation
of pneumatic tyres, such for instance as a valve for gas, steam, or any volatile
substances or liquids.
It may be placed in any desired position, and its shape and proportions and the
materials of which it is composed may be varied more or less according to the
circumstances and purposes for which it is to be used.
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:
1. The combination of the nipple a, cap b, valve c, and plug or cap d, arranged
and operating substantially in the manner and for the purposes described and
shewn.
2. In combination with the nipple. a, cap b, and valve c, the open guard f¹, to
limit the movement of the valve and allow the air to pass, substantially as described
and shewn.
3. In combination with the nipple a, cap b, and valve c, the plug ¹, substantially as
and fax the wurnace dacaribad and cham

page_text: 4. The methods of attaching the nipple a to the hollow pneumatic tyre and to
the metal rim of the wheels of cycles or other vehicles, substantially as described
and shewn.
5. The combination with the ordinary valve of a pneumatic tyre, the nipple a
and plug , substantially as described and illustrated in Figure 8.
Dated this 5th day of November 1890
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.