Improvements in Valves for Use with Pneumatic Tyres, or in other Cases where Vessels or Chambers are to be Charged with Fluids..
Year: 1895

page_text: Date of Application, 7th Nov., 1895
Complete Specification Left, 16th June, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Valves for Use with Pneumatic Tyres, or in
other Cases where Vessels or Chambers are to be Charged
with Fluids..
I, CHARLES FITZROY ALEXANDER HALLIFAX BAGOT of 59 Cadogan
Square in the County of London, Esquire, do hereby declare the nature of my
invention to be as follows:-
The object of my invention is to provide a valve which is very simple in
construction and efficient in action, and not liable to get out of order which is very
readily operated, which acts efficiently as a non-return valve, and wherein the
closure is effected by a valve proper and operating parts situated entirely, or in
main part, within the chamber which is to contain the fluid under pressure, and
can be positively locked, and the closure assisted by the pressure of fluid in the
chamber. Moreover the portion projecting is reduced to a minimum. I will
explain the invention as applied to a pneumatic tyre from which also its other
applications will be readily, understood.
According to my invention I secure in the walls of the air chamber a hollow or
tubular, socket piece, having secured to or formed on its inward end, a conical or
partly spherical bearing piece constituting a seating for the valve proper, which
latter is secured on a stem-piece passing up through the interior of the socket piece,
and having a screwed end protruding from the outer end of the said socket piece.
The said socket piece passes through the felloe of the wheel and is D shaped at
the part which passes through a D shaped hole in the felloe. The said socket
piece projects only sufficiently from the outward side to receive a washer and
securing nut screwed thereon and to form the nozzle upon which the pump is to be
screwed or the socket piece may project only sufficiently to receive the washer and
a nut, which nut may itself be formed with the nozzle for the attachment of the
pump. The valve stem and valve are pressed outwardly by a spring, or springs,
which may be of any suitable kind; for instance, a spiral spring contained in a
chamber in the part of the socket piece inwards, or in part inwards, of the felloe
and bearing on a projection on the stem and at its other end on a flange at the
lower end of the socket piece, or on the edge of the conical, or partly spherical
bearing piece, or springs may be caused to press on the valve itself and be attached
thereto for instance there may be a cage or perforated cup secured to the conical
or partly spherical bearing piece, and a spring between the valve and the said cage
or cup. The stem piece may be guided and prevented from turning by any suitable
projections from itself, or from the interior of the socket piece which will not allow
the stem piece to rotate but will allow it to move longitudinally and will also allow
of the passage of air through the space between the stem piece and the socket
piece, or the spring or springs used, may be connected to the valve and arranged
so as to prevent the valve and stem from turning. The spring, or springs, causes,
the valve proper to bear upon its seat. A dust cap is screwed upon the
upper protruding screwed end.of the stem piece and bears on the outer edge of the
socket piece or nozzle so that by screwing up the dust cap the stem piece is drawn
outwards and the valve proper is forced and retained firmly against its seat and
the valve is securely locked in its closed position. The valve proper is provided:
with a pad of rubber.or other, sufficiently Hexible or yielding material, preferably
sprung into an undercut groove, in the inside of a rim formed on the valve disc..
or cause,

page_text: The conical, or partly spherical form of the piece against which the valve pad
bears forms a very effective closure as the edge is angular whilst the parts outwards
of the edge afford a sloping, or curved, surface against which the rubber, or the
like, can close by its own elasticity. The air chamber and valve are secured
together by an arrangement which prevents all leakage of air at the joint. It
consists of a piece fitting the inside of the felloe on the one side, and on the other,
bearing against the outer side of the air chamber and pinching it between itself
and the back of the conical, or partly spherical, piece the opposed faces of these
two parts, which bear on the material of the air chamber, being waved or formed
with circular, grooves and depressions or equivalently formed to present alternating
pinching parts and recesses the former gripping the material of the air chamber,
and the latter allowing the elasticity of the said material to act to ensure a good
joint. When the chamber is to be charged the dust cap is removed and the
pumping device is attached to the nozzle piece by screwing it on the outer end of
the socket piece. The spring or springs will yield to allow air to pass the valve,
air is forced inwards by the pump, and the said spring or springs will return the
valve proper to its seat at each return stroke so that the valve acts as a non-return
valve. When the pump removed and the dust cap is screwed on again the said
cap will draw outwards the valve stem and again lock the valve proper firmly
against its scat. On removing the dust cap the stem of the valve can be readily
forced inwards to allow the fluid 'under pressure to escape when required.
Dated this 7th day of November 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Valves for Use with Pneumatic Tyres, or in
other Cases where Vessels or Chambers are to be Charged
with Fluids.
1, CHARLES FITZROY ALEXANDER HALLIFAX BAGOT of 59 Cadogau
Square in the County of London, Esquire, 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 :-
The object of my invention is to provide a valve which is very simple in
construction and efficient in action and not liable to get out of order, which is very
readily operated which acts efficiently as a non-return valve, and wherein the
closure is effected by a valve proper and operating parts situated entirely, or in
main part, within the chamber which is to contain the fluid under pressure the
portion projecting being reduced to a minimum and which valve can be positively
locked, and the closure assisted by the pressure of fluid in the chamber. I will
explain the invention as applied to a pneumatic 'tyre from which also its other
applications will be readily understood.
The accompanying drawing represents a valve made according to my invention..
Figure 1 is an elevation and Figure 2 a section of an arrangement. Figure 3' is
a section of a modification. of tlie arrangement.
According to my invention and referring first to Figures 1 and 2 I secure in
the walls of tlie air chamber (part of which is shewn at a) a hollow, or tubular
socket piéce having secured to, or formed on, its inward end, a conical, or partly
spherical, bearing piece c'constituting a seating for 'the valve proper; d; which
latter is secured on a stem piece e passing up through the interior of the socket
piece, band having a screwed end e protruding; from the outer end of the said
socket piece b, to receive the dust cap, or the said screwed end need not project,.

page_text: but the dust cap may be provided with a projection to enter the end of the socket-
piece to receive the said screwed end as shewn. The said socket-piece 6 passes
through the felloe of the wheel (part of which is shewn at f) and is D shaped or
non-circular at the part which passes through a D shaped, or non-circular, hole in
the felloe, or if preferred in the piece hereinafter referred to or in both. The
said socket-piece b need project only sufficiently from the outward side of the felloe
to receive a washer g and securing nut h screwed thereon and to form the
nozzle upon which the pump is to be screwed for forcing in air or the socket-
piece b may as shewn in Figure 3 project only sufficiently to receive the washer
and a nut which nut may itself be formed with the nozzle for the attachment
of the pump, the indiarubber washer g' being for ensuring a tight joint. The
valve stem e and valve d are pressed outwardly (i.e. to the closed position) by. a
spring, or springs, which may be of any suitable kind; for instance as shewn in
Figure 3, a spiral spring ; contained in a chamber in the part of the socket-piece b
inwards, or in part inwards, of the felloe, and bearing on a projection on the
stem e and at its other end on a flange at the lower end of the socket-piece b, or
springs may be caused to press on the valve itself and be attached thereto, for
instance as shewn in Figure 2 there may be a cage, or perforated cap, i, secured to
a screw formed on the edge of the conical, or partly spherical, bearing piece c and
the spring j be placed between the valve and the said cage, or cap. The stem
piece e may be guided and prevented from turning by any suitable projections
from itself, or from the interior of the socket-piece, which will not allow the stem
piece to rotate but will allow it to move longitudinally and will also allow of the
passage of air through the space between the stem piece and the socket piece..
This is shewn as being effected by a squared part at e sliding in a squared part of
the hole through the socket piece b but with spaces for air at the sides of the
square, or the spring, or springs, used, may be connected to the valve and arranged
so as to prevent the valve and stem from turning. The spring, or springs, act to
cause, the valve proper to bear upon its seat, c². The dust cap k is screwed upon.
the screwed end of the stem piece e and bears on the outer edge of the nozzle b
so that by screwing up the dust cap k the stem piece e is drawn outwards and the
valve proper d is forced, and retained firmly, against its seat and the valve is.
securely locked in its closed position. The valve proper is provided with a pad of
rubber, or other sufficiently flexible or yielding, material, preferably sprung into
an undercut groove in the inside of a rim formed on the valve disc d' and retained
by the flange d' on the valve stem e. The conical, or partly spherical form at e
of the seat against which the valve pad bears forms a very effective closure as the
edge is angular or approximately so whilst the parts outwards of the edge afford a :
sloping, or curved, surface against which the rubber, or the like can close by its
own elasticity. The air chamber and valve are secured together by an arrange-
ment which prevents all leakage of air at the joint. It consists of a piece / fitting
the inside of the felloe on the one side, and, on the other, bearing against the
outer side of the material of the air chamber a and pinching it between itself and
the back of the conical, or partly spherical, piece c, the opposed faces of these two:
parts which bear on the material of the air chamber, being waved, or formed
with circular grooves, and depressions, constituting a projecting nipping ring or
two or more such rings opposite each other on the said faces, to present one or more
alternating pinching parts and recesses, as shewn at the pinching parts gripping
the material of the air chamber, and the recesses, allowing the elasticity of the
said material to act to ensure a good joint, a nut m is screwed onto the exterior of
the socket piece b to force the parts together. When the chamber is to be charged
with air or other fluid the dust cap & is removed and the pumping device is attached
to the nozzle piece 6 by screwing it thereon. The spring ; (or springs) will on
the forcing stroke of the pump yield to allow air to pass the valve, and the air or
other Huid is forced inwards by the pump, and the said spring (or springs) will
return the valve proper to its seat at each return stroke of the pump so that the
valve acts as a non-return valve. When the pump is removed and the dust cap k

page_text: is screwed on again the said cap will draw outwards the valve steme and again
lock the valve proper d firmly ágainst its seat c. On removing the dust cap k, the
stem e of the valve can be readily forced inwards to allow the fluid under pressure
to escape when required.
Although I have described the invention as applied to a pneumatic tyre it may
be applied to air cushions or be employed for any other analogous purpose where
charging with air or other fluid is to be effected.
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. A valve for the purposes described, the said valve consisting of a socket piece
provided at one end with a seating for the valve proper and with means for attaching
the socket piece to the air chamber, and of a valve proper having a stem passing
through the said socket piece so as to allow of the passage of air and a dust cap,
or screwed piece, for drawing the said stem into a position to lock the valve proper
substantially as hereinbefore described and so that the valve proper is entirely
within the air chamber.
2. In a valve for the purposes described, the combination of a socket piece
having a valve seat at one end formed as described, and at the other end a bearing
for a dust cap or closing piece, and means, between the valve end and the other
end, for securing the socket to the air chamber and a valve with a valve stem
passing through the said socket piece and passages for air and a dust cap, or closing
piece, screwing upon the valve stem so as to close the socket piece and force the
valve to its closed position substantially as herein before described..
3. In a valve for the purposes described, the combination of a socket piece
having a valve seat at one end formed as described, and at the other end a bearing
for a dust cap or closing piece, and means, between the valve end and the other
end, for securing the socket to the air chamber, and a valve with a valve stem
passing through the said socket piece and passages for air and a dust cap or closing
piece screwing upon the valve stem so as to close the socket piece and force the
valve to its closed position and a bearing cap or cage or a recess in the socket piece
containing a spring or springs for returning the valve to its seat, substantially as
hereinbefore described.
4. In valves for the purposes described, a valve proper consisting of a flexible
pád in an undercut disc or holder and a valve seating with a conical or equivalently
formed surface against the edge of which the flexible pad can bear whilst the
material of the said pad by its own elasticity closes around the conical outer
surface; substantially as herein before described.
5. In valves for the purposes described a socket piece or body of the valve
secured to the material of the air chamber by means of surfaces with a surrounding
projection or enclosing ring (or projections or rings) with their elevations opposed
to each other so that the material of the air chamber is gripped thereby but
expands by its natural elasticity between, or at the sides, of the said projections,
or rings; substantially as herein before described.
6. The general arrangement and combination of parts constituting a valve for
the purposes mentioned substantially as herein before described and illustrated in
Figures 1 and 2 of the accompanying drawings.
7. The general arrangement and combination of parts constituting a valve for
the purposes mentioned, substantially as herein before described and illustrated in
Figure 3 of the accompanying drawings.
Dated this 15th day of June 1896.
JOHNSONS & WILCOX,
47 Lincoln's lun Fields, London, W.C., Agents.