Improvements in or relating to Inflation Valves and Pumps.
Year: 1897

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Date of Application, 13th Dec., 1897
Complete Specification Left, 13th Sept., 1898-Accepted. 10th Dec. 1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Inflation Valves and Pumps.
I, FITZ-HARDINGE ROBERT BAYFIELD LIEBENROOD, of Red House, Halfway
Street, Sidcup, in the County of Kent, Barrister-at-Law, do hereby declare the
nature of this invention to be as follows:-
This invention relates to valves and pumps for inflation purposes, and I will
describe it as applied to a pneumatic tyre, though it may be used for other
purposes if desired.
The valve chamber comprises a short preferably metal body which may be
screwed or otherwise secured to the ordinary valve stems, or may be connected
direct with the air tube or to a small
This valve chamber is hollow and suitably formed to receive a valve approxi-
tube projecting therefrom.
mately of an inflated mushroom form, above which is placed a preferably rubber
ring or cushion nearly enclosing the space, but leaving a small orifice in the
centre. Above this ring I arrange a closure cap of metal or other suitable
material adapted when closed to press upon the previously described ring or
cushion so as to cause it to entirely close, thus forming an additional closure
valve, while the side of the inner face of the closure cap may be more or less
conically formed so as to fit down in an air-tight manner upon the previously.
described ring. The valve proper may be of rubber or other suitable and pre-
ferably flexible material, and its upper conical face is intended to engage with
the previously mentioned ring so as to make a tight joint on that side also. This
valve may be attached or not to the rubber ring as preferred, a suitable way
being to connect it at one part as though it were hinged; it may be made at
the same time as the ring and as a part thereof either of the same rubber or
vulcanised to it.
I thus have three air-tight joints in the valve which is nevertheless of an
exceedingly simple construction.
The closure cap previously described may be hinged to or carried by a metal
or other ring adapted to screw into or onto the valve chamber, the underside
being preferably shaped to fit and press upon the ring or cushion; a spring or
any suitable means may be used to retain the closure cap in its closed position.
The pump is provided with a nozzle preferably of thin metal and suitably
shaped to pass through the rubber ring, its point forcing back the valve, and
the air when the pump is worked passing round between the edges of the valve
and the cavity in the valve chamber in which it sits...
The pump nozzle may be provided with a stirrup or equivalent which would
hook over some projection upon the outside of the valve chamber, or be otherwise
quickly connected and disconnected so that by the arrangement described I dis-
pense with the dust cap usually employed, and the screwing and unscrewing of
the pump in making or breaking the attachment.
If desired the nozzle may be screwed or provided with a suitable attachment
30 that it may be used with the ordinary valves.

page_text: To connect the nozzle with the flexible tube of the pump I prefer to employ
a divided clip which may if desired be tapered outside and have a clamping ring
forced upon it so as to grip the rubber tube between the clip and the stem or
other portion of the nozzle. If desired the clip may be screwed externally so
as to fit into the ordinary valve and the clamping ring may if necessary screw
upon the clip.
Dated this 13th day of December 1897
of relating to inflation Valves and Pumps.
I, FITZHARDINGE ROBERT BAYFIELD LIEBENROOD, of Red House, Halfway
Street, Sidcup, in the County of Kent, Barrister-at-Law, 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:-
This invention relates to valves and pumps for inflation purposes, and I will
describe it as applied to a pneumatic tyre, though it may be used for other
purposes if desired.
The valve chamber comprises a short preferably metal body which may be
screwed or otherwise secured to the ordinary valve stems, or may be connected
direct with the air tube or to a small tube projecting therefrom.
This valve chamber is hollow and suitably formed to receive a valve approxi-
mately of an inverted mushroom form, above which is placed a preferably rubber
ring or cushion nearly enclosing the space, but leaving a small orifice in the
centre. Above this ring I arrange a closure cap of metal or other suitable
material adapted when closed to press upon the previously described ring or
cushion so as to cause it to entirely close, thus forming an additional clos tre
valve, while the side of the inner face of the closure cap may be more or less
conically formed so as to fit down in an air-tight manner upon the previously
.described ring. The valve proper may be of rubber or other suitable and pre-
ferably flexible material, and its upper conical face is intended to engage with
the previously mentioned ring so as to make a tight joint on that side also. This
valve may be attached or not to the rubber ring as preferred, a suitable way
heing to connect it at one part as though it were hinged; it may be made at
the same time as the ring and as a part thereof either of the same rubber or
vulcanized to it.
I thus have several air-tight joints in the valve which is nevertheless of an
exceedingly simple construction."
The closure cap previously described may be hinged to or carried by a metal
or other ring adapted to screw into or onto the valve chamber, the underside
being preferably shaped to fit and press upon the ring or cushion; a spring or
any suitable means may be used to retain the closure cap in its closed position.
The բնութ is provided with a nozzle preferably of thin metal and suitably
shaped to pass through the rubber ring, its point forcing back the valve, and
the air when the pump is worked passing round between the edges of the valve
and the cavity in the valve chamber in which it sits.
The pump nozzle may be provided with a bayonet-catch or equivalent which
would engage in a suitable slot in the valve chamber, or be otherwise quickly
connected and disconnected so that by the arrangement described I dispense with

page_text: dust cap usually employed, and the screwing and unscrewing of the pump
in making or breaking the attachment.
If desired the nozzle may be screwed or provided with a suitable attachment
so that it may be used with the ordinary pumps.
To connect the nozzle with the flexible tube of the pump I prefer to employ
a divided clip which may if desired be tapered outside and have a clamping ring
forced upon it so as to grip the rubber tube between the clip and the stem or
other portion of the nozzle. If desired the clip may be screwed externally so
as to fit into the ordinary valve and the clamping ring may if necessary screw
upon the clip.
In the accompanying drawings
Figure 1 is the sectional elevation of the improved inflation valve showing the
closure cap in position;
Figure 2 is a similar view showing the pump nozzle inserted in the valve;
Figure 3 is a perspective view of the elastic cushion;
Figure 4 is a perspective view of the closure cap;
Figure 5 is a similar view of the valve casing;
Figure 6 is a similar view of the pump nozzle ;
Figure 7 is a sectional elevation of a slightly modified construction showing
the closure cap in position;
Figures 8, 9 and 10 are perspective views of the closure cap and parts of the
casing of the modification;
Figure 11 is a section of another construction of cushion;
- Figure 12 is a perspective view of the improved clip for connecting a pump
tube to a nozzle.
Like letters indicate like parts throughout the drawings.
The valve casing is formed in two parts A and B which are screwed one into
the other so as to enclose the perforated elastic cushion C.
casing is provided with an internal screwed portion A¹ for enabling it to be con-
The part A of the
nected to a pneumatic tyre or other article requiring inflation. This part of
the casing is also provided with a central orifice A2 for the passage of the air
and a circular ridge A3 upon which the cushion Crests in such a manner that
an air-tight joint is formed round the central orifice. The part B of the valve
casing is also provided with a ridge B which when the two parts of the casing
are united for the purpose of enclosing the cushion C is embedded in the latter
so as to form a second air-tight joint. The elastic cushion C is perforated as
at C¹, the surface of the cushion around this perforation being on one side flat
or approximately so while at the other side the cushion has a conical indenta-
tion C leading to the perforation. When the cushion is in position within the
casing A B the ridges A³ and B¹ by reason of their being embedded in the
cushion cause the rubber or other elastic material of which the latter is made
to be slightly displaced in such a manner as to tend to close the orifice C¹, thus
keeping the valve air-tight even when the closure cap is removed. This cap D
is provided with a cup shaped part D₁ whose edge when the cap is in position
on the valve is embedded in the cushion C and tends to still further close the
orifice C¹ while at the same time making a tight joint around it. For the pur-
pose of connecting the closure cap and valve casing the latter is provided upon
the top with an undercut circular groove B² with which engage lugs D2 upon the
closure cap. The grooves B2 are interrupted as at B3 to allow the introduction
of the lugs. Thus it will be seen, that all screwing for the purpose of removing
or attaching the closure cap is obviated the action being made by simply pressing
in the cap and giving it a quarter turn after the lugs D are in engagement with
the groove B². For the purpose of inflating the valve a special pump nozzle E
is employed. This comprises a cylindrical portion provided with a flange E¹
having lugs E2 for engaging the groove B2 on the valve casing and an exten-
tion E3 whose end is rounded so that it can be readily forced into the perfora-
tion C in the cushion C. The extension E³ is preferably just of sufficient length

page_text: :
to allow of its passing right through the cushion C. Upon the extension E³ is
formed an annular cup. shaped part E which when the nozzle is inserted in the
valve forms a tight joint in the same way as the cup shaped portion D₁ of the
closure cap D by reason of the edge of the annular cup being embedded in
the substance of the cushion C.
If desired in order to prevent a rush of air from the interior of the article
inflated directly the pump nozzle is inserted the latter may be provided internally
with some form of valve such as a spring controlled ball valve.
The closure cap D is provided with a milled portion D³ to facilitate its
manipulation.
..
...In the modification shown in Figures 7 to 10 the valve casing is as before con-
structed in two parts A and B but in this case the former part is enlarged and
then reduced to accommodate the cushion C which is sprung into it, the second
part B of the casing when screwed in merely serving by reason of the ridge B¹
to form a tight joint, since the shape of the casing A causes the cushion to be
retained until it is forcibly withdrawn. The part A is provided with a screwed
part A, orifice A2 and ridge A3 as before, while the part B is provided with an
undercut groove B2 for the reception of the lugs D2 on the closure cap D, the
latter in this case instead of having a milled head is provided with a flattened
piece D by means of which it may be turned.
One or both of the parts A and B of the casing may if desired be milled or
roughened in order to facilitate their disconnection.
The pump nozzle E is conveniently provided with a portion E5 which is cut
with a screw thread such as will allow of the connection therewith or an ordinary
air pump of the type commonly used for the inflation of pneumatic tyres.
The cushion shown in Figure 11 is provided with a flap C³ attached to its under
side in such a way that it forms a non-return valve over the opening C in the
cushion. The flap C³ may if desired be replaced by a strip of rubber stretched
across the central orifice Č¹ and attached by solution or otherwise to the sides of
the cushion, or a metal disc may be used.
This construction of the cushion is that which I mainly described in my Pro-
sional Specification since filing which I have, however, discovered that the addi-
tional valve is not always necessary.
In Figure 12 is shown a convenient device for securing the end of the rubber
pump tube to the screw connection over the pump, nozzle. The device com-
prises a cylindrical piece F adapted to fit upon the end of the tube G and pro-
vided with several projections which are tapered externally so that they can
be caused to securely clip the end of the tube G by sliding a ring F2 along their
tapered surfaces. If the ring F is thus forced up the inclined surfaces of the
extensions F1 after the reduced part of the pump nozzle connection H has been
inserted into the end of the tube G, the latter is firmly compressed about the
connecting piece H so as to prevent it from becoming accidentally detached.
By means of the above described device a new rubber tube can be readily fitted
to existing connecting pieces. It is obvious that the device may be employed
for securely attaching the tube to the pump in the same way.
If desired a casing enclosing a perforated elastic cushion provided with a cup-
shaped closure cap such as 1 D₁ may be screwed on to a valve of some well
known type. In this case the cap D D¹ serves as an effective dust cap, the pump
nozzle such as shown in Figure 6 being employed for inflating.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1: In an inflation valve the employment of a perforated elastic cushion such
as C.
T
2. In an inflation valve the combination with a two-part casing of an elastic

page_text: cushion such as C enclosed by the parts of the casing so as to form an air-tight
joint.
3. In an inflation valve the combination with an elastic cushion such as C of a
two-part casing enclosing it each part having a ridge which is imbedded in the
cushion so as to form an air-tight joint substantially as described.
4. In an inflation valve the combination with a cushion such as C of a casing
engaging by suitable projecting faces with the cushion so as to produce more than
one air-tight connection between the cushion and the casing.
5. In an inflation valve the combination with a casing enclosing a perforated
elastic cushion of a cup-shaped closure cap such as D D.
6. In an inflation valve the combination with an elastic cushion such as C of
a pump nozzle with an extension E and cup shaped portion E substantially as
described.
7. The complete inflation valve and closure cap substantially as described or
illustrated in Figures 1, 4 and 5, or Figures 7, 8, 9 and 10 of the accompanying
drawings.
8. The complete pump nozzle substantially as described or illustrated in
Figures 2 and 6 of the accompanying drawings.
9. In an inflation valve an elastic cushion substantially as described and illus-
trated in Figure 3 or Figure 11 of the accompanying drawings.
10. In inflation pumps the combination with a rubber tube of a clip such
as F F for attaching the tube to the pump or nozzle.
11. The clip for inflation pump tubes substantially as described or illustrated
in Figure 12 of the accompanying drawings.
Dated this 13th day of September 1898.
BOULT & WADE,
Agents for the Applicant.