Improvements in Valves for Pneumatic Tyres of Wheels for Carriages, Bicycles, Tricycles, and other Road Vehicles.
Year: 1894

page_text: Date of Application, 3rd Mar.. 1894
Complete Specification Left, 3rd Dec., 1894-Accepted, 5th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Valves for Pneumatic Tyres of Wheels for
Carriages, Bicycles, Tricycles, and other Road Vehicles.
We, NORMAN KNOWLES and WILLIAM PHILIPSON, trading under the style
or firm of The Mersey Rubber Company, Bank Quay, Warrington in the County
of Lancaster, India-rubber Manufacturers, do hereby declare the nature of our
said invention to be as follows:-
This invention relates to improvements in valves for pneumatic tyres of wheels
for carriages, bicycles, tricycles, and other road vehicles, wherein the said tyres
are inflated by means of air, gas, or liquids under pressure, for the purpose of
effecting elasticity. This valve is constructed in a simple and efficient manner
and is provided with means for attaching a force pump or like device to inflate
the pneumatic tyre. This we carry into effect in the following manner: To the
inflatable tube and its covering is fixed an externally screwed stem provided with
a head and an outside washer and nut; the latter being for securing the said stem
to the rim or felly of the wheel. In the stem is provided a seat or bearing
composed of soft or other metal, or other suitable pliable materials, such as, india-
rubber, leather, and the like, on which sits a metallic ball or other valve held in
prongs or projections on the end of an internal tube provided with a hole to admit
the inflating medium. The internal tube is mounted in the aforesaid stem, being
secured and locked in position by means of a nut mounted on the upper screwed
end of the said stem. On the outside of the internal tube is cut a groove or
annular recess in which is disposed a ring of india-rubber or other pliable material
that will make a tight joint. The outer end of the internal tube projects beyond
the securing nut and is screwed to receive the pump or like device attachment,
and a nut for closing same when the tyre is inflated. When it is desired to deflate
or inflate the air tube of the pneumatic tyre it is effected by unscrewing the nut
on the outer end of the externally screwed stem for a short distance, by which the
internal tube and valve may be withdrawn as far as the nut has been released,
thus allowing of the exit or admission of inflating medium. In lieu of the metallic
ball valve an india-rubber ball or globular valve may be employed mounted and
vulcanized on the conical end of a metallic stem. This ball or globular valve sits
in a seat in the inner end of the screwed stem and makes a tight joint between
the same and the internal tube. The internal tube is screwed inside the outer
tube; the upper end of the former being fitted with a nut and preparation to
receive attachment of pump or like device, and so constructed as to allow of a nut
to close the same when the air tube of the tyre is inflated. The metallic stem is
screwed at its outer end in the internal tube or otherwise. The outer end of
spindle is fitted with a nut with flat sides to allow the inflating medium to pass,
and so disposed as to prevent the spindle projecting through the nut when screwed
up. The internal tube is provided with a chamber or cavity in which is located a

page_text: spring to operate the valve. This valve is so constructed as
removal of same without opening the tyre.
Deted the 2nd March 1894
to allow of the
EDMUND CHADWICK, F.I.C.P.A.,
Agent.
Improvements in Valves for Pneumatic Tyres of Wheels for
Carriages, Bicycles, Tricycles, and other Road Vehicles.
We, NORMAN KNOWLES and WILLIAM PHILIPSON, trading under the style or
firm of The Mersey Rubber Company, Bank Quay, Warrington in the County of
Lancaster, India-rubber Manufacturers, do hereby declare the nature of our said
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 improvements in valves for pneumatic tyres of wheels
for carriages, bicycles, tricycles, and other road vehicles, wherein the said tyres are
inflated by means of air, gas, or liquids under pressure, for the purpose of effecting
elasticity. This valve is constructed in a simple and efficient manner and is
provided with means for attaching a force pump or like device to inflate the
pneumatic tyre. This we carry into effect in the following manner :-To the
inflatable tube and its covering is fixed an externally screwed stem provided with
a head and an outside washer and nut; the latter being for securing the said stem
to the rim or felly of the wheel. In the stem is provided a seat or bearing composed
of soft or other metal, or other suitable pliable materials, such as, india-rubber,
leather, and the like, on which sits a metallic ball or other valve held in prongs or
projections on the end of an internal tube provided with a hole to admit the
inflating medium. The internal tube is mounted in the aforesaid stem, being
secured and locked in position by means of a nut mounted on the upper screwed
end of the said stem. On the outside of the internal tube is cut a groove or
annular recess in which is disposed a ring of india-rubber or other pliable material
that will make a tight-joint. The outer end of the internal tube projects beyond
the securing nut and is screwed to receive the pump or like device attachment, and
a nut for closing same when the tyre is inflated. When it is desired to deflate or
inflate the air tube of the pneumatic tyre it is effected by unscrewing the nut on
the outer end of the externally screwed stem for a short distance, by which the
internal tube and valve may be withdrawn as far as the nut has been released, thus
allowing of the exit or admission of inflating medium. In lieu of the metallic ball
valve an india-rubber ball or globular valve may be employed mounted and
vulcanized on the end of a metallic stem. This ball or globular valve sits in a
seat in the inner end of the screwed stem and makes a tight-joint between the
same and the internal tube. The internal tube is screwed inside the outer tube;
the upper end of the former being fitted with a nut and preparation to receive
attachment of pump or like device, and so constructed as to allow of a nut to close
the same when the air tube of the tyre is inflated. The metallic stem is screwed
at its outer end in the internal tube or otherwise. The outer end of spindle is
fitted with a nut with flat sides to allow the inflating medium to pass, and so disposed
as to prevent the spindle projecting through the nut when screwed up. The
internal tube is provided with a chamber or cavity in which is located a spring to
operate the valve. This valve is so constructed as to allow of the removal of same
without opening the tyre.

page_text: wheels for carriages, bicycles, tricycles, and other road vehicles, and Fig. 2 an
outside view of same.
A is the inflatable tube; B the screwed stem provided with the head C; D outside.
washer; E nut, and F the rim or felly of the wheel.
To the inflatable tube A is fixed the screwed stem B provided with the head C..
The bottom end of the stem B is fitted with the valve seat G composed of soft or
other metal. or other suitable pliable materials, such as, india-rubber, leather, and
the like, on which sits the metallic or other ball or globular valve H. The valve H
is held in the prongs I on the end of the tube J; the latter being provided with
the hole or passage K to admit the inflating medium supplied by a force pump or
like device when attached to the screwed end L of the tube J. The internal
tube J is mounted in the stem B and is secured therein by the nut M, the joint
being made by the india-rubber or other pliable ring N. The outer or upper-
end of the tube J projects beyond the nut M and is provided with the screwed
end L to receive a pump or like device to inflate the tube A, the same being
closed, after the pump or like device has been removed, by the nut O. In the
tube J is disposed the spindle P with the conical end Q to make a tight joint and
form a back-pressure valve to passage K when tube A is inflated, thus making the
action and object more certain. The tube J is also provided with the conical
portion R which operates against the underside of the nut M to make a tight
joint when inflation is being performed.
This valve operates in the following manner :-When it is necessary to inflate
the tube A the nut O is removed and a pump or like device is placed thereon.
Before the pump or like device is set in motion the tube J is screwed outwardly
a little to lift the valve H from the seat G, which at the same time makes a tight
joint between the upper end of the conical portion R and the underside of the
nut M. When the tube A is sufficiently inflated the tube J is screwed back to
place the valve H on the seat G. In case the valve H leaks the inflating medium
forces the conical end Q of the spindle P against the seating S, thus closing the
hole or passage K in the tube J.
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 we are
aware of the Specification of the Patent No. 2839 A.D. 1891 of Thomas Wilson
Robertson and we wish it to be understood that we do not claim anything described
and claimed therein but what we claim is :--
1. In combination with the stem B, provided with the head C and seating G,
attached to the rim or felly and the inflatable tube of pneumatic tyres of wheels
for carriages, bicycles, tricycles, and other road vehicles, the use of a ball valve H
secured in prongs on the end of the tube J, substantially as described and as
illustrated in the annexed drawings.
2. In combination with the stem B, provided with the head C and seating G,
attached to the rim or felly and the inflatable tube of pneumatic tyres of wheels
for carriages, bicycles, tricycles, and other road vehicles, the use of the ball valve H,
and cone Q on spindle P combined, substantially as described and as shown in the
drawings for the purpose set forth.
3. The general arrangement, construction, and combination of parts forming our
improved valve for pneumatic tyres of wheels for carriages, bicycles, tricycles,
and other road vehicles, substantially as described and shown in the drawings.
Dated December 1st 1894.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.