Improvements in Valves for Pneumatic Tyres of Wheels for Carriages, Bicycles, Tricycles, and other Road Vehicles.
Year: 1892

page_text: . Date of Application, 5th Sept., 1892.
Complete Specification Left, 31st May, 1893-Accepted, 1st July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves for Pneumatic Tyres of Wheels for
Carriages, Bicycles, Tricycles, and other Road Vehicles.
We, WALTER SWAIN and WILLIAM PHILIPSON of Hillfold Mill, Astley Bridge
near Bolton in the County of Lancaster, Pneumatic Tyre 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 and consists in constructing the same in a simple and efficient manner,
which will allow of the same being operated by a force pump or like device, and
which is held firmly against its seat by the pressure in the inflated tube. This we
effect by securing to the inflatable tube and its covering a stem provided with a
head and an outside washer or plate mounted on a square on same, both being
secured to the rim or felly of the wheel by means of a nut on the screwed end of
the stem projecting through the said rim or felly. In the stem is provided a seat
with an angular or pointed facing on which is placed a disc of india-rubber or other
pliable material. On the latter sits a valve with a stem or spindle and an angular
The valve stem or
or pointed facing corresponding with that on the valve seat.
spindle passes through an opening in the valve seat into a chamber or cavity in
which is disposed a spiral spring to hold or assist the valve being held against its.
seat when depressed by a nut screwed on the outer end of the valve, stem or
spindle. The side of the valve is provided with a stop or projection fitting in, a
slot or recess in the chamber containing the valve seat to prevent the valve rotating
when turning the nut to operate the spiral spring. The stem containing the valve
seat may be constructed in two parts to allow of the valve being removed without
opening the pneumatic tyre; a joint being effected by means of leather, india-rubber,
soft metal, or other equivalents, which are secured together by a nut screwed on
the fixed portion in the tyre. In another modification the valve casing is provided
with a head and is secured to the pneumatic tube and the wheel rim or felly by a
nut and washer. In this valve casing is disposed a metallic tube, one end of which
extends to a point almost level with the valve seat of the fixed valve casing. The
metallic stem is provided with a shoulder or flange which sits on the upper end of
the fixed valve casing, and is secured thereon by a nut screwed on the outside of
the latter. The valve stem or spindle is provided with a recessed end on which is
mounted a valve of india-rubber or other equivalent material, which makes a tight
joint against the ends of the valve casing and the metallic tube. The valve stem
or spindle is provided with a slotted or forked end to allow of the same sliding on
a fixed bar or pin to prevent the same turning when operating the tension screw.
The valve stem or spindle passes through the metallic tube into a chamber or cavity
in which is disposed a spiral spring to hold or assist the valve being held against
its seat when depressed by a nut screwed on the outer end of the valve stem or
spindle. When air, gas, or liquid is being forced into the inflatable tube the valve
is forced from its seat and allows the same to pass, and is closed instantly when

page_text: pumping ceases by the spiral spring and the pressure in the inflated tube. The
outer end of the valve stem is screwed to receive a cap or cover to prevent the
internal parts being lost in case they come loose. The outer end of the cap or cover
is provided, with a forked piece which may be employed for operating the nut on
the end of the valve stem or spindle. The end of the valve casing or metallic
tube is provided with means for attaching a pipe or its equivalent connected to the
force pump or like device employed for inflating the tyre.
Dated the 3rd September 1892.
EDMUND CHADWICK,
Agent.
Improvements in Valves for Pneumatic Tyres of Wheels for
Carriages, Bicycles, Tricycles, and other Road Vehiclės.
We, WALTER SWAIN and WILLIAM PHILIPSON of Hillfold Mill, Astley Bridge
near Bolton in the County of Lancaster, Pneumatic Tyre 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 and consists in constructing the same in a simple and efficient manner,
which will allow of the same being operated by a force pump or like device, and
which is held firmly against its seat by the pressure in the inflated tube. This we
effect by securing to the inflatable tube and its covering a stem provided with a
head and an outside washer or plate mounted on a square on same, both being
secured to the rim or felly of the wheel by means of a nut on the screwed end of
the stem projecting through the said rim or felly. In the stem is provided a seat
with an angular or pointed facing on which is placed a disc of india-rubber or other
pliable material. On the latter sits a valve with a stem or spindle and au angular
or pointed facing corresponding with that on the valve seat. The valve stem or
spindle passes through an opening in the valve seat into a chamber or cavity in
which is disposed a spiral spring to hold or assist the valve being held against its
seat when depressed by a nut screwed on the outer end of the valve stem or
spindle. The side of the valve is provided with a stop or projection fitting in a
lot or recess in the chamber containing the valve seat to prevent the valve rotating
when turning the nut to operate the spiral spring. The stem containing the valve
seat may be constructed in two parts to allow of the valve being removed without
opening the pneumatic tyre; a joint being effected by means of leather, india-rubber,
soft metal, or other equivalents, which are secured together by a nut screwed-on
the fixed portion in the tyre. In another modification the valve casing is provided
with a head and is secured to the pneumatic tube and the wheel rim or felly by a
nut and washer. In this valve casing is disposed a metallic tube, one end of which
extends to a point almost level with the valve seat of the fixed valve casing, The
inetallic stem is provided with a shoulder or flange which sits on the upper end of
the fixed valve casing, and is secured thereon by a nut screwed on the outside of
the latter. The valve stem or spindle is provided with a recessed end on which is
mounted a valve of india-rubber or other equivalent material, which makes a tight
joint against the ends of the valve casing and the metallic tube. The valve stem
or spindle is provided with a slotted or forked end to allow of the same sliding on
a fixed bar or pin to prevent the same turning when operating the tension screw.
The valve steni or spindle passes through the metallic tube into a chamber or cavity
in which is disposed a spiral spring to hold or assist the valve being held against

page_text: ts seat when depressed by a nut screwed on the outer end of the valve stem or
pindle. When air, gas, or liquid is being forced into the inflatable tube the valve
forced from its seat and allows the same to pass, and is closed instantly when
bumping ceases by the spiral spring and the pressure in the inflated tube. The
uter end of the valve stem is screwed to receive a cap or cover to prevent the
nternal parts being lost in case they come loose. The outer end of the cap or
cover is provided with a forked piece which may be employed for operating the
ut on the end of the valve stem or spindle. The end of the valve casing or
metallic tube is provided with means for attaching a pipe or its equivaleut connected
o a force pump or like device employed for inflating the tyre.
road vehicles.
Fig. 2 is a sectional plan through line A' B¹.
Fig. 3 is a sectional plan through line C¹ D'.
Fig. 4 is a view of valve stem showing one method of securing valve thereon.
Fig. 5 is an enlarged sectional elevation of another modification of our invention.
Fig. 6 is a plan of underside of Fig. 5.
Fig. 7
is an enlarged sectional elevation of another modification of our
invention, and
Fig. 8 is a plan of upper nut and screw key.
In all the figures the same letters are employed to indicate corresponding parts.
A is intended to represented the rim or felly of a pneumatic tyre of wheels for
carriages, bicycles, tricycles, and other road vehicles of such dimensions as to
conform in cross-section to the contour of a round or oval tyre; B is an inflatable
india-rubber, elastic, or other tube to contain air, gas, or liquid under pressure, and
C the canvas cover or bag. To the inflatable tube B, covering C, and rim or
felly A is secured the stem D provided with the head E and the outside washer or
plate F mounted on the square of stem D, the whole being secured together by the
nut G screwed on the threaded portion of the stem D. The stem D is threaded
internally to receive the screwed stem H; the lower end of the latter is provided
with the angular or pointed facing I on which sits the valve J composed of india-
rubber or other pliable material secured in any convenient manner to the valve
stem or spindle K. The latter passes through the opening in the lower end of
stem H into the chamber or cavity L in which is disposed the spiral spring M to
hold or assist the valve J against its seat I when depressed by the nut N screwed
on the upper end of the valve stem or spindle K. The nut N is of the form shown
in Fig. 3 to allow of a passage for the inflating medium through the chamber or
cavity L. To facilitate the passage of the inflating medium the upper end of the
stem H is provided with the slots T. The side of the valve stem or spindle K is
fitted with the stop or projection O fitting in the slot or recess P in the opening in
the lower end of the stem H to prevent the valve stem or spindle K rotating when
turning the nut N to operate the spiral spring M. The stems D and H are made
separate, the latter being provided with the nut Q to allow of the valve, seat, and
stem or spindle being removed without opening the pneumatic tyre. The joint
between the stems D and H are effected by means of the ring R, composed of
either leather, india-rubber, soft metal, or other equivalents, located between the
upper end of the stem D and the underside of the nut Q. The portion of the
stem H above the nut Q is threaded externally to receive the screwed cap or
cover S to protect the nut N.
In the modification of our invention shown in Fig. 7 the stem D is fitted internally
with the stem H provided at its lower end with an internal conical bearing or valve
seat, the bottom end of same being level with the valve facing 1 in the stem D.
The india-rubber valve J is of the conical form shown so that when pressed against
the valve facing I and the conical seat it forms a double joint and thus prevents the

page_text: escape of pressure from the tyre either up the chamber or cavity L or through the:
passage, or space between the outer wall of the stem H and the inner wall-of
the stem D. The stem H is secured in position in the stem D by the nut Q:
screwed on the outside of same operating on the collar X on the stem H. In the
chamber or cavity L in the upper end of the stem H is disposed the spring M 5
operated by the nut, N serewed on the upper end of valve stem or spindle K. The
nut Nhas two flat sides, as in Fig. 3, to allow of the passage of the inflating
medium through the chamber or cavity L supplied from a pump or like device
employed for inflating the tyre.. The upper end of the stem H is screwed
externally to receive the cap or cover S; the upper end of the latter being
provided with the forked end or screw key U for the purpose of screwing the
nut N when necessary for operating the spring M. When the valve J is made of
india-rubber the stem or spindle K may be recessed, as shown in Figs. 4 and 7, or
otherwise, on which is placed the valve J of raw india-rubber, after which the
same is vulcanized in the usual manner. The force pump or like device employed
for inflating the tyre may be screwed on the threaded end of the stems D and H
after the cap or cover S has been removed.
.
In the modification of our invention shown in Fig. 5 the stem H is dispensed
with, the valve J being a metallic one on the end of the stem or spindle K. In
this case the valve seat I consists of a disc of india-rubber or other pliable material
located in the upper end of the valve chamber on the bottom end of the stem D.
The stem D is screwed externally its whole length to receive the cap or cover S
and the nut G. The upper end of the latter is provided with the fork end or screw
key U for the purpose of screwing the nut N when necessary to operate the
spring M. To prevent the valve J and the stem or spindle K rotating when
operating the nut N the valve J is provided with the slot V which slides in either
direction on the pin W located in the projection below the head E on the bottom
end of stem D.
We are aware that prior to the date of our present application it has been
proposed to use with pneumatic tyres an india-rubber valve on a screwed spindle
fitted with a nut for holding the valve on its seat and prevented from rotating
during the turning of the nut, and make no claim, per se, to such arrangement,
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 what we
claim is :-
☐ 1. The general arrangements, constructions, and combinations of parts composing
the improved valve for pneumatic tyres of wheels for carriages, bicycles, tricycles,
and other road vehicles, substantially as described and as illustrated in the annexed
drawings.
2. In combination with the stem D 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 and construction of apparatus consisting of the stem H having
the valve facing I at its lower end, the pliable valve J secured to the stem or
spindle K with the stop or projection O in the slot P in the opening at bottom end
of stem H, the spring M, nut N, cap or cover S, nut Q, and ring R, which will
allow of the stem H and the valve and seat being removed without displacing the
stem D or opening the tyre, substantially as described and as illustrated in the
drawings.
3. In combination with the stem D 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 and construction of apparatus consisting of the stem H provided
with the collar X and secured by the cap or cover Q. the stem H having an
internal conical bearing terminating with the valve face of the stem D to allow of
a double joint being effected by the conical india-rubber valve J secured to the
lower end of stem or spindle K, the said valve being held against the double valve
face by the spring M operated by the screw N, substantially as described..
་ ་་

page_text: 4. The form and construction of the india-rubber valve J secured to the stem or
spindle K for the purpose specified substantially as described and as shown in
Fig. 7.
Dated the 17th May 1902
EDMUND CHADWICK, F.I.C.P.A.,
Agent.